17th week of 2022 patent applcation highlights part 66 |
Patent application number | Title | Published |
20220131471 | POWER CONVERTER - A power converter includes N power conversion units. Each power conversion unit includes a main switching circuit, a transformer, a synchronous rectifier circuit, an input signal terminal and a signal processor. A primary winding of the transformer is connected with the main switching circuit. The synchronous rectifier circuit is connected with a secondary winding of the transformer. The input signal terminal receives a first PWM control signal. The signal processor generates first and second PWM driving signals to drive the main switching circuit according to the first PWM control signal, and a phase difference between the first and second PWM driving signals is (180±θ) degree. The signal processor generates third and fourth PWM driving signals to drive the synchronous rectifier circuit according to the first PWM control signal, and a phase difference between the third and fourth PWM driving signals is (180±θ) degree. | 2022-04-28 |
20220131472 | POWER-SUPPLY CONTROL DEVICE - A power-supply control device capable of reducing a size of a power-supply device including a main power-supply and a plurality of auxiliary power-supply systems and stably supplying electric power to the plurality of auxiliary power-supply systems is provided. The power-supply control device includes a DC/DC converter that steps down a power-supply voltage from a main battery and outputs the stepped-down power-supply voltage to a first auxiliary power-supply system and a second auxiliary power-supply system; and a controller that stops supply of electric power from the DC/DC converter to the second auxiliary power-supply system when a load of a heater is in a predetermined high-load state, and supplies electric power from the DC/DC converter to the second auxiliary power-supply system when the load of the heater changes from the predetermined high-load state to a predetermined low-load state. | 2022-04-28 |
20220131473 | REGULATED SWITCHED MODE POWER SUPPLIES HAVING ADJUSTABLE OUTPUT VOLTAGES - A switched mode power supply includes a power circuit and a control circuit coupled to the power circuit for regulating its output voltage. The control circuit is configured to generate a control signal for at least one power switch of the power circuit using a reference voltage, determine if a duty cycle of the control signal is within a defined range, sense one or more output parameters of the power circuit including the output voltage of the power circuit, and in response to determining the duty cycle of the control signal is outside the defined range, adjust the reference voltage to adjust the duty cycle of the control signal. The reference voltage is adjustable over time to thereby linearly adjust the output voltage of the power circuit. Other example switched mode power supplies, control circuits, and methods for regulating output voltages of switched mode power supplies are also disclosed. | 2022-04-28 |
20220131474 | GAIN TUNING FOR SYNCHRONOUS RECTIFIERS - A synchronous rectifier includes: an integrator configured to integrate a voltage across a secondary side winding of a transformer over an integral period having an expected zero integral value; a first comparator configured to detect an end of a demagnetization phase of the secondary side winding based on diode detection; and a digital circuit configured to adjust a channel gain of the synchronous rectifier based on an integration error at the end of the integral period, the integration error corresponding to the difference between the integrated voltage at the end of the integral period and the expected zero integral. Corresponding methods of gain tuning and a power converter are also described. | 2022-04-28 |
20220131475 | POWER SUPPLY APPARATUS WITH LIMITED POWER SOURCE CAPABILITY AND METHOD OF CONTROLLING THE SAME - A power supply apparatus with limited power source capability includes a power path, a current sensing resistor, a control unit, and a switch. The power path is coupled between a transformer and an output port of the power supply apparatus. The current sensing resistor is disposed on the power path. The control unit is coupled to the current sensing resistor. The switch is disposed on the power path. When the control unit determines that a sense voltage of the current sensing resistor is less than a first threshold value and a signal voltage of the control unit is greater than a second threshold value, the control unit turns off the switch. | 2022-04-28 |
20220131476 | POWER CONVERSION DEVICE - A three-phase multilevel inverter is connected to a first direct-current voltage source having a first voltage. Single-phase inverters are each connected in series to a corresponding phase of the three-phase multilevel inverter, and include a second direct-current voltage source, respectively, each having a second voltage. Combined output voltages, which are combinations of boost voltages generated by the three single-phase inverters and output voltages of the three-phase multilevel inverter, are supplied to a load. The control device adjusts a common mode voltage of the combined output voltages to be within a predetermined allowable range, and variation ranges of the line voltages in the combined output voltages to satisfy a specified condition established with the second voltage as a reference. | 2022-04-28 |
20220131477 | ADVANCE SUPPLY TO INSURE SAFE BEHAVIOR OF AN INVERTER APPLICATION - An apparatus to insure safe behavior in an inverter system. In one embodiment, the apparatus includes a first high side gate driver, a first low side gate driver, a microcontroller configured to control the first high side and low side gate drivers. A voltage regulator provides a supply voltage to the microcontroller. A first pair of high side voltage regulators provide a first pair of high side supply voltages to the first high side gate driver. A first pair of low side voltage regulators provide a first pair of low side supply voltages to the first low side gate driver. | 2022-04-28 |
20220131478 | Mems Beam Structure and Mems Vibration-Driven Energy Harvesting Element - This MEMS beam structure that elastically supports a movable section displaced in a first direction includes: a first beam section and a second beam section extending in a second direction orthogonal to the first direction; and a linking section that connects the tip of the first beam section and the tip of the second beam section that is connected to the movable section, wherein the first beam section and the second beam section each have a shape as a beam of uniform strength, and the beam section root of the second beam section is displaced relatively in the first direction with respect to the beam section root of the first beam section according to the displacement of the movable section in the first direction. | 2022-04-28 |
20220131479 | COMBINATION PIEZOELECTRIC ACTUATOR AND SENSOR - A test system includes a frame. A hydraulic actuator is mounted to the frame and is configured to support a test specimen. A piezoelectric actuator is configured to apply a force to the test specimen. A controller is configured to excite the piezoelectric actuator and provide an indication of force generated by the piezoelectric actuator by measurement of current or charge provided to the piezoelectric actuator. | 2022-04-28 |
20220131480 | CONTROL DEVICE FOR VIBRATION-TYPE ACTUATOR, VIBRATION-TYPE DRIVE DEVICE INCLUDING VIBRATION-TYPE ACTUATOR AND CONTROL DEVICE, AND ELECTRONIC APPARATUS USING MACHINE LEARNING - A control device for a vibration-type actuator includes a control unit including first and second output units. The first output unit includes a first learned model subjected to machine learning in such a way as to output a first control amount for causing the contact body to relatively move with respect to the vibrator. The second output unit includes a second learned model subjected to machine learning in such a way as to output a second control amount, which is data of the same data format as that of the first control amount. The control unit updates parameters of the first learned model and parameters of the second learned model based on a control deviation, which is a difference between the first control amount and the second control amount output within the same sampling period as that of the first control amount. | 2022-04-28 |
20220131481 | PIEZOELECTRIC DRIVE DEVICE AND ROBOT - A piezoelectric drive device includes a substrate, a convex portion coupling to the substrate and transmitting drive power to a driven member, first drive piezoelectric elements placed on the substrate and vibrating the substrate in Y directions in which the substrate and the convex portion are arranged, second drive piezoelectric elements placed on the substrate and vibrating the substrate in Z directions orthogonal to the Y directions, a reference piezoelectric element placed on the substrate, receiving the vibration in the Y directions, and outputting a detection signal, and a concave portion placed side by side with the reference piezoelectric element in the Z directions in a plan view from an X direction orthogonal to the Y directions and the Z directions. | 2022-04-28 |
20220131482 | Piezo-Elements for Wearable Devices - Aspects of the present disclosure describe systems, methods, and structures that scavenge mechanical energy to provide electrical energy to a wearable, where the mechanical energy is scavenged by a bending-strain-based transducer that includes a non-resonant energy harvester. By employing a non-resonant energy harvester that operates in bending mode, more electrical energy can be generated that possible with prior-art energy harvesters. In some embodiments the bending-strain-based transducer also includes a sensor and/or a haptic device. Some transducers in accordance with the present disclosure comprise a piezoelectric layer comprising a low-K piezoelectric material, such as aluminum nitride, which enables generation of higher voltage and power/energy output and/or a thinner transducer. As a result, transducers in accordance with the present disclosure can be included in wearables for which large transducer thickness would be problematic, such as sole members (e.g., shoe insoles, midsoles or outsoles), garments, bras, handbags, backpacks, and the like. | 2022-04-28 |
20220131483 | METHOD FOR CONTROLLING CURRENT PATH RANGE BY USING ELECTRIC FIELD, AND ELECTRONIC CIRCUIT - A method of controlling a current path range using an electric field is disclosed, and the method of controlling a current path range includes applying an electric field to an active layer including a spontaneous polarization material through an application electrode disposed adjacent to the active layer to form a polarization region of the active layer, and forming a variable low resistance region corresponding to a boundary of the polarization region, wherein the variable low resistance region is a region of the active layer having a lower electrical resistance than another region of the active layer adjacent to the variable low resistance region and allows an electrical path to be formed. | 2022-04-28 |
20220131484 | DRIVE SYSTEM AND METHOD FOR OPERATING A DRIVE SYSTEM - In a drive system and method for operating a drive system, in which the drive systems includes an electromagnetically operable brake, an electric motor, e.g., a three-phase motor, and an electronic circuit, the brake has an energizable coil, e.g., a brake coil, the electronic circuit has a rectifier, an upper controllable semiconductor switch, a freewheeling diode, and a varistor, a direct voltage provided by a rectifier is able to be made available by closing or by a pulse-width-modulated actuation of an upper controllable semiconductor switch of the coil, and by opening the upper controllable semiconductor switch, a current driven by the coil in the de-excitation of the coil is freewheeling and/or flowing through the freewheeling diode and the varistor or through a component connected in parallel with the varistor. | 2022-04-28 |
20220131485 | GENERATOR PULLEY SYSTEM AND METHODS THEREOF - The present disclosure provides a generator pulley system and methods thereof. Atop the generator pulley system may be a generator and battery for actuating at least one motor. A pull line may be retractably coupled to the front of the system. Alternatively, the pull line is not retractable. At least one sensor may be used to monitor the line. In an illustrative embodiment, the system may actuate the at least motor to steer in the direction of the pulled line. The battery may be recharged by the generator depending on its state of charge and period of time after requesting a movement of the generator. | 2022-04-28 |
20220131486 | ELECTRIC POWERED WORK MACHINE, AND METHOD FOR SUPPRESSING SURGE VOLTAGE IN ELECTRIC POWERED WORK MACHINE - An electric powered work machine according to one aspect of to the present disclosure includes a motor. The electric powered work machine includes a first line connecting a positive electrode of a battery to the motor. The electric powered work machine includes a second line connecting a negative electrode of the battery to the motor. The electric powered work machine includes a third line connecting the first line to the second line. The electric powered work machine includes a first capacitor disposed on the third line. The electric powered work machine includes a rectifier disposed on the third line. The rectifier limits or inhibits an electric current flowing from the second line to the first line through the third line. The electric powered work machine includes a first circuit connected to the third line. The first circuit has impedance that is other than zero, and bypasses the rectifier. | 2022-04-28 |
20220131487 | GENERATOR CONTROL SYSTEM AND METHOD OF CONTROLLING THE SAME - A generator control system is coupled to a motor generator. The system includes a DC port, a first switch unit, a DC bus, a first power conversion circuit, a second power conversion circuit, and a second switch unit. The first power conversion circuit has a first side coupled to the DC bus and a second side coupled to the first switch unit. The second power conversion circuit has a first side coupled to the DC bus and a second side coupled to the motor generator. One end of the second switch unit is coupled to the first power conversion circuit and the first switch unit, and the other end of the second switch unit is coupled to the DC port. | 2022-04-28 |
20220131488 | CONTROLLER FOR AC ROTARY ELECTRIC MACHINE - To provide a controller for AC rotary electric machine which can suppress that the control accuracy of current is deteriorated, when switching from the all phase short circuit state to the switching control. A controller for AC rotary electric machine calculates voltage command values based on current command values and current detection values; carries out switching between a switching control that turns on and off plural switching devices provided in the inverter based on the voltage command values, and all phase short circuit control that turns on and off the plural switching devices so that the plural-phase windings are short-circuited mutually; and when switching from the all the phase short circuit control to the switching control, sets the current command values to switching current values which are current values corresponding to currents which flow in executing the all phase short circuit control. | 2022-04-28 |
20220131489 | Control Method of Brushless DC Motor System Based on Hybrid Energy Storage Unit - A brushless DC motor system control method provided is based on a hybrid energy storage unit. The HESU topology is designed, and the output of the designed HESU is connected to the input of three-phase inverter, and the output of three-phase inverter is connected with the three-phase windings of the BLDCM. In braking operation, two kinds of braking vectors are constructed according to the HESU and three-phase inverter. Moreover, through the combined action of the two vectors, the braking torque control is achieved and meanwhile the braking energy is fed back to the supercapacitor. In electric operation, four kinds of electric vectors are constructed according to the HESU and three-phase inverter. Moreover, the power sharing control between battery and supercapacitor is realized by different vectors action during motor acceleration mode, and the torque ripple in commutation period is suppressed by different vectors action during motor constant speed mode. | 2022-04-28 |
20220131490 | BANDWIDTH-PARTITIONING HARMONIC REGULATION FOR IMPROVED ACOUSTIC BEHAVIOR OF AN ELECTRIC DRIVE SYSTEM - A method for controlling operation of a rotary electric machine includes receiving, via a bandwidth-partitioning harmonic compensation regulator (HCR) of a controller, a commanded torque and rotational speed of the electric machine, and calculating, via the HCR in response to enabling conditions, a dq harmonic compensation current and a dq harmonic compensation voltage for one or more predetermined harmonic orders using the commanded torque and the rotational speed. The harmonic compensation current and voltage cancel torque ripple and current ripple in the one or more predetermined harmonic orders. The method may include injecting an acoustic tone at a predetermined harmonic order. The method additionally includes adding the dq harmonic compensation current and voltage to a dq current and voltage command, respectively, to generate adjusted dq current and voltage commands. The electric machine is then controlled using the adjusted dq current and voltage commands. | 2022-04-28 |
20220131491 | MOTOR DRIVING CIRCUIT AND MOTOR DRIVING METHOD - A motor driving circuit and a motor driving method are provided. The motor driving circuit is used to drive the motor and includes an inverter circuit, a control circuit, a current-limiting circuit, a start circuit and a transient circuit. The control circuit controls the inverter circuit to drive the motor with a motor control current according to a set current limit value indicated by a current-limiting signal, and outputs a steady state ready signal in response to the motor reaching a steady state. The current-limiting circuit generates the current-limiting signal according to a start state signal, or generates the current-limiting signal according to a transient signal. The start circuit outputs the start state signal when the motor starts. The transient circuit detects whether the motor is in a transient state, and outputs the transient signal in response to the motor being in a transient state. | 2022-04-28 |
20220131492 | MOTOR DRIVING APPARATUS, ELECTRIC BLOWER, VACUUM CLEANER, AND HAND DRYER - A motor driving apparatus for driving a single-phase motor includes an inverter disposed between a battery and the single-phase motor, the inverter applying a first voltage to the single-phase motor at startup and applying a second voltage to the single-phase motor during a normal operation. A stop time period is present after application of the first voltage, application of the first voltage being stopped during the stop time period, and the inverter applies the second voltage after a lapse of the stop time period. | 2022-04-28 |
20220131493 | POWER CONVERSION DEVICE, PRESSURE FEED DEVICE, POWER CONVERSION METHOD, NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM WITH A PROGRAM STORED THEREON, DIAGNOSIS DEVICE, AND DIAGNOSIS METHOD - A power conversion device is provided, which includes a power conversion circuit configured to convert primary power to secondary power and supply the secondary power to a pump and a control circuit configured to cause the secondary power to follow a control command by the power conversion circuit the control circuit being configured to further execute evaluating, on the basis of the secondary power, an amplitude of a driving force of the pump, setting, on the basis of a relationship between an evaluation result of the amplitude and a driving speed of the pump, an amplitude threshold value profile indicating a relationship between an amplitude threshold value and the driving speed, and detecting an abnormality in the pump in response to the evaluation result of the amplitude exceeding the amplitude threshold value based on the amplitude threshold value profile. | 2022-04-28 |
20220131494 | ELECTRIC MOTOR CONTROL DEVICE, ROBOT HAVING THE SAME, AND METHOD OF CONTROLLING ELECTRIC MOTOR - A control device configured to control operation of an electric motor of which a rotational shaft is rotatable by an external force which servo-controls the electric motor by an inverter circuit when a voltage value between power-supply input terminals of the inverter circuit is detected to be at or above a given voltage value required for the servo-control of the electric motor, and applies dynamic braking to the electric motor by forming a short circuit in the inverter circuit when the voltage value between the power-supply input terminals of the inverter circuit is detected to be below the given voltage value. | 2022-04-28 |
20220131495 | FAN SPEED CONTROL METHOD FOR AVOIDING INACCURATE CONTROL CAUSED BY SUDDEN CHANGE IN POWER SUPPLY OUTPUT STATE - The present invention provides a fan speed control method for avoiding inaccurate control caused by sudden changes in a power supply output state, including the steps of: acquiring an output current value of a power supply device; and then, determining a change of the output current value in a sampling timeframe, if a slope representing the change is positive, controlling the control signal generating unit to gradually replace the fan control signal currently output to the fan with another fan control signal on the basis of a first latency, and if the slope representing the change is negative, controlling the control signal generating unit to gradually replace the fan control signal currently output to the fan with another fan control signal on the basis of a second latency. The first latency and the second latency are determined by the output current value, respectively. | 2022-04-28 |
20220131496 | POWER GENERATION SOURCE AND DISTRIBUTION SYSTEM - A renewable-energy electrical generation and distribution system including a first container and a second container. Each of the first container and the second container includes a power source disposed within the container and deployable therefrom, and generating energy from a renewable resource. A first compartment is disposed within the container, and retains a battery in communication with the power source. A power distribution system is disposed within the container and in communication with the battery and with the power source. A communications system is disposed within the container and configured to communicate data via an ad-hoc mobile communications network formed by the first container and the second container and configured to operate independent of any communication network not part of the first container and the second container forming the ad-hoc mobile communications network. | 2022-04-28 |
20220131497 | PHOTOVOLTAIC MODULE - A photovoltaic module includes at least one cell unit, and the at least one cell unit is rectangular; the at least one cell unit includes a plurality of cell-string groups that are electrically connected, each of the plurality of cell-string groups includes a plurality of cell strings connected in parallel, and each of the plurality of cell strings includes a plurality of cell connected in series; each of the plurality of cell-string groups has two electrically conductive ends and two side edges located between the two electrically conductive ends; and at least two neighboring instances of the plurality of cell-string groups are arranged in a predetermined mode, wherein the predetermined mode is as follows: one of the two electrically conductive ends of one of the plurality of cell-string groups and one of side edges of the neighboring cell-string group are located on a same straight line. | 2022-04-28 |
20220131498 | PHOTOVOLTAIC MODULE PACKING BOX AND PHOTOVOLTAIC MODULE PACKAGE STRUCTURE - A photovoltaic module packing box and a photovoltaic module package structure are provided. The photovoltaic module packing box includes a tray having an accommodation space; a support plate having an edge hinged to an edge of the tray, and the support plate is lapped on the tray; an airbag assembly arranged in the accommodation space; an air valve assembly connected to the airbag assembly by a pipeline; an enclosure frame connected to the support plate and configured to enclose, together with the support plate, a receiving space for photovoltaic modules, and the enclosure frame includes a fixation part and a movable part; the fixation part is fixed to the support plate with one side thereof configured as an open structure; the movable part is detachably connected to the open structure of the fixation part, and the movable part and the fixation part together form an annular structure. | 2022-04-28 |
20220131499 | OSCILLATOR CIRCUIT WITH NEGATIVE RESISTANCE MARGIN TESTING - Systems, methods, and circuits are provided for facilitating negative resistance margin testing in an oscillator circuit. An example oscillator circuit includes amplifier circuitry configured to be coupled in parallel with a resonator and variable resistance circuitry configured to, in response to a resistance control signal, adjust a resistance of the oscillator circuit. | 2022-04-28 |
20220131500 | Radio Frequency Receiver and Method for Down-Converting Signals to Baseband Signal Components - A radio frequency receiver comprising mixer circuitry to down-convert a received signal, which is transported on a signal line to baseband signal components, is provided. The mixer circuitry comprises a plurality of switched capacitors, each connected to the signal line through a signal side node and to a corresponding switch through a switch side node. In this context, a voltage is sensed at each switch side node of the plurality of switched capacitors and is read out through a respective grounded capacitor. | 2022-04-28 |
20220131501 | APPARATUS AND A METHOD IN A WIRELESS COMMUNICATIONS NETWORK - A method for controlling allotment of power input between at least two PAs of a radio unit for data communication in a wireless communications network is provided. The radio unit has access to Direct Current (DC) power and Photovoltaic (PV) power. The amount of power to be transmitted out from each respective PA out of the at least two PAs established, and information related to the amount of PV power available is obtained. The allotment of power input of DC power and PV power between the at least two Pas is then controlled based on the established amount of power to be transmitted out from each respective PA out of the at least two PAs, and the obtained information related to the amount of PV power available. | 2022-04-28 |
20220131502 | HIGH-SPEED HIGH-LINEARITY TIME-INTERLEAVED DYNAMIC OPERATIONAL AMPLIFIER CIRCUIT - A high-speed high-linearity time-interleaved dynamic operational amplifier circuit includes a first current channel and a second current channel. The first current channel includes a first MOS transistor, a second MOS transistor and a third MOS transistor which are sequentially connected in series between a high level and a ground level. The first MOS transistor and the second MOS transistor have opposite conductivity types. A control end of the first MOS transistor is connected to a control end of the second MOS transistor. The second current channel includes a fourth MOS transistor, a fifth MOS transistor and a sixth MOS transistor which are sequentially connected in series between the high level and the ground level. The fourth MOS transistor and the fifth MOS transistor have opposite conductivity types. A control end of the fourth MOS transistor is connected to a control end of the fifth MOS transistor. | 2022-04-28 |
20220131503 | EFFICIENCY, SYMMETRICAL DOHERTY POWER AMPLIFIER - Apparatus and methods for an improved-efficiency Doherty amplifier are described. The Doherty amplifier may include a two-stage peaking amplifier that transitions from an “off” state to an “on” state later and more rapidly than a single-stage peaking amplifier used in a conventional Doherty amplifier. The improved Doherty amplifier may operate at higher gain values than a conventional Doherty amplifier, with no appreciable reduction in signal bandwidth. | 2022-04-28 |
20220131504 | HIGHER HARMONICS PROCESSING CIRCUIT AND AMPLIFIER - A harmonic processing circuit includes: a feeder line configured to feed power to an amplifying device; and a harmonic processing unit connected to the feeder line, and configured to perform harmonic processing to a harmonic of a signal outputted from the amplifying device. The feeder line is connected to a fundamental wave matching circuit that is connected to the amplifying device and performs matching with respect to a fundamental wave of the signal. | 2022-04-28 |
20220131505 | ACTIVE FEEDBACK WIDEBAND LOW-NOISE AMPLIFIER - An active feedback low-noise amplifier includes a feedback transistor whose source couples through a feedback path to an input signal node. A bias transistor biases the source of the feedback transistor with a bias current responsive to an input signal carried on the input signal node. | 2022-04-28 |
20220131506 | CONFIGURABLE NON-LINEAR FILTER FOR DIGITAL PRE-DISTORTION - Some embodiments herein describe a radio frequency communication system that can include a transmitter to output an radio frequency (RF) transmit signal, the transmitter including a digital pre-distortion system (DPD) that pre-distorts the RF transmit signal. The DPD system can include a configurable non-linear filter, such as a Laguerre filter, having multiple rows where at least one row operates with a configurable decimation ratio. The DPD system can further include decimators and a crossbar switch coupled between the decimators. | 2022-04-28 |
20220131507 | SYSTEMS AND METHODS FOR SENSING A CURRENT IN A CIRCUIT - Embodiments of a device and method are disclosed. In an embodiment, a current sensing circuit includes first and second integrated resistors on a semiconductor die, a controllable current source configured to provide a reference current, and a current determination circuit. A resistance value of the second integrated resistor is a factor n larger than a resistance value of the first integrated resistor. A current drawn by a target circuit is configured to flow through the first integrated resistor, and the reference current is configured to flow through the second integrated resistor. The current determination circuit is configured to determine a value of the current drawn by the target circuit based on the value of the reference current when a first voltage at a terminal of the first integrated resistor is approximately equal to a second voltage at a terminal of the second integrated resistor. | 2022-04-28 |
20220131508 | DEVICE, METHOD AND COMPUTER PROGRAM PRODUCT FOR AMPLIFICATION OF AN INPUT SIGNAL - A device for amplification of an input signal, the device comprising: amplification circuitry comprising a plurality of switchable transistors; a variable voltage input connected to the amplification circuitry; and controller circuitry; wherein the controller circuitry is configured to: set a target output power level of the device; and control at least one of: a state of connection between the plurality of switchable transistors to change an effective physical dimension of the amplification circuitry; or a level of the variable voltage input; in accordance with a load impedance of an output of the amplification circuitry, to amplify the input signal to the target output power level for that load impedance. | 2022-04-28 |
20220131509 | METHODS AND APPARATUS FOR SUPPORTING LINEARIZATION ON POWER COMBINED POWER AMPLIFIERS - Methods and apparatus for implementing a power amplifier circuit assembly an uneven power splitter which feeds two power amplifiers of different amplifier classes are described. By supplying different amounts of power to different amplifier circuits having different performance curves, an overall combined amplifier performance having a relatively uniform, e.g., flat, performance curve over a wide range of frequencies is achieved. In at least some embodiments one of the amplifiers is a class B power amplifier and the other amplifier is a class C power amplifier. In some but not necessarily all embodiments a phase shift is introduced on a signal path to one of the power amplifiers to compensate for a difference in phase shifts introduced by the power amplifiers which are used in parallel. | 2022-04-28 |
20220131510 | Packaging Structure and Power Amplifier - A packaging structure and a power amplifier, the packaging structure including a first component, a second component, a printed circuit board, and a metal plate having an etched pattern. The printed circuit board is disposed on the metal plate, and the printed circuit board has an open slot. The first component is disposed in the open slot, and the first component is disposed on the metal plate. The first component is connected to the printed circuit board, the second component is disposed on the printed circuit board, and the second component is connected to the printed circuit board. | 2022-04-28 |
20220131511 | Techniques for Enabling Interoperability between Media Playback Systems - A device is configured to (i) receive media content from a media source, (ii) generate a first series of frames including first portions of the media content and first playback timing information, (iii) generate a second series of frames including second portions of the media content and second playback timing information, (iv) transmit the first series of frames to a first playback device in a synchrony group for playback of the first portions of the media content in accordance with the first playback timing information, and (v) transmit the second series of frames to a second playback device in the synchrony group for playback of the second portions of the media content in accordance with the second playback timing information such that the media content is played back in synchrony by the synchrony group. | 2022-04-28 |
20220131512 | Tunable Slope Equalizer - A tunable slope equalizer comprising a waveguide (e.g., rectangular waveguide) and posts (e.g., cylindrical posts) configured to move inside the internal cavity of the waveguide is presented. The degree of depth the posts may be inserted into the cavity of the waveguide may determine the orientation of the frequency response slope, e.g., positive or negative, and the maximum (or approximately maximum) insertion loss at minimum (or approximately minimum) or maximum (or approximately maximum) operating frequency, respectively. Being a mechanical device, the tunable slope equalizer may be fabricated at a relatively higher level of precision, leading to lower variances in performance over production. | 2022-04-28 |
20220131513 | METHOD FOR MANUFACTURING FILM BULK ACOUSTIC RESONANCE DEVICE HAVING SPECIFIC RESONANT FREQUENCY - A method for manufacturing a film bulk acoustic resonance device is disclosed. The proposed method, wherein the device has a specific resonant frequency, includes: providing a substrate having a recess, wherein the recess has a height; configuring a first piezoelectric material layer on the substrate, and causing the recess to form an air gap; configuring a lower electrode on the first piezoelectric material layer; when the height is in a first range, causing a resonant frequency of the film bulk acoustic resonance device versus the height to have a first slope; when the height is in a second range, causing the resonant frequency versus the height to have a second slope; and causing the first slope to be smaller than the second slope. | 2022-04-28 |
20220131514 | METHOD FOR MANUFACTURING FILM BULK ACOUSTIC RESONANCE DEVICE HAVING SPECIFIC RESONANT FREQUENCY - A method for manufacturing a film bulk acoustic resonance device is disclosed. The proposed method, wherein the device has a specific resonant frequency, includes: providing an upper electrode; providing a lower electrode; configuring a first piezoelectric material layer between the upper electrode and the lower electrode; configuring a resonant frequency determining metal layer on the upper electrode, wherein the resonant frequency determining metal layer has a thickness; causing a resonant frequency of the film bulk acoustic resonance device and the thickness to form a curve; and when the thickness on the curve changes linearly, causing the resonant frequency to change non-linearly. | 2022-04-28 |
20220131515 | CURRENT FILTER EXTERNALLY COUPLED TO CABLE - A current filter externally coupled to a cable includes a coupling portion coupled to a cable portion to surround the cable portion including at least one cable, the coupling portion including a flexible metal, and a ground portion detachably attached to the coupling portion and transmitting a current flowing through the coupling portion to a ground plane. | 2022-04-28 |
20220131516 | DIPLEXER - A diplexer includes a low-band band pass filter between a common input/output terminal and a low-band input/output terminal and a high-band band pass filter between the common input/output terminal and a high-band input/output terminal, wherein the low-band band pass filter includes LC resonators including a first-stage LC resonator to a final-stage LC resonator in order from the common input/output terminal toward the low-band input/output terminal, the high-band band pass filter includes LC resonators including a first-stage LC resonator to a final-stage LC resonator in order from the common input/output terminal toward the high-band input/output terminal, a matching capacitor is between the common input/output terminal and the low-band band pass filter, and the capacitance of a capacitor of the first-stage LC resonator of the low-band band pass filter is smaller than the capacitance of a capacitor of the final-stage LC resonator. | 2022-04-28 |
20220131517 | ACOUSTIC WAVE DEVICE, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE - An acoustic wave device includes a support substrate, a piezoelectric layer, and an IDT electrode. The support substrate is made of quartz. The piezoelectric layer is provided on the support substrate and is made of LiTaO | 2022-04-28 |
20220131518 | CRYSTAL VIBRATION DEVICE - An AT-cut crystal vibration plate has, at its both ends, first and second castellations that interconnect first mounting terminals and also interconnect second mounting terminals formed on main surfaces on both sides of this plate. The first and second castellations respectively have first and second cutouts, and these cutouts each have an end surface extending along Z′ axis of crystal and located on a −X-axis side. The end surfaces each include a first inclined face inclined in a manner that protrudes from one of the main surfaces toward the −X-axis side, and a second inclined face inclined in a manner that protrudes from the other main surface toward the −X-axis side. The angle made by the first inclined face and the second inclined face is an obtuse angle. | 2022-04-28 |
20220131519 | PIEZOELECTRIC VIBRATING DEVICE - A piezoelectric vibrating device according to the present invention is provided with: a piezoelectric vibration plate having first and second driving electrodes respectively formed on main surfaces on both sides thereof, the piezoelectric vibration plate further having first and second mounting terminals that are respectively connected to the first and second driving electrodes. The piezoelectric vibrating device is also provided with first and second sealing members respectively joined to the main surfaces on both sides of the piezoelectric vibration plate in a manner that the first and second driving electrodes of the piezoelectric vibration plate are covered with these sealing members. At least one of the first and second sealing members includes a film made of a resin. | 2022-04-28 |
20220131520 | BULK ACOUSTIC WAVE RESONATOR AND BULK ACOUSTIC WAVE FILTER - A bulk acoustic wave resonator and a bulk acoustic wave filter are provided. The bulk acoustic wave resonator includes: a piezoelectric layer; an electrode layer located at both sides of the piezoelectric layer; and an electrode edge frame structure located at an edge of the electrode layer and located at one side of the electrode layer away from the piezoelectric layer. The electrode edge frame structure includes a laminated structure, the laminated structure includes an edge convex layer and a passivation layer laminated in a longitudinal direction, and the passivation layer is located at one side of the edge convex layer away from the piezoelectric layer; in a transverse direction, the laminated structure includes a cantilever member and a convex structure connected with each other; a cantilever gap is arranged between the cantilever member and at least one of the piezoelectric layer and the electrode layer. | 2022-04-28 |
20220131521 | BULK ACOUSTIC WAVE FILTER STRUCTURE WITH CONDUCTIVE BRIDGE FORMING ELECTRICAL LOOP WITH AN ELECTRODE - Disclosed is a Bulk Acoustic Wave (BAW) filter structure with a conductive bridge forming an electrical loop with an electrode for reduced electrical losses. In exemplary aspects disclosed herein, the BAW filter structure includes a transducer with electrodes, a piezoelectric layer between the electrodes, and at least one conductive bridge offset from at least a portion of one of the electrodes by an insulating volume. The conductive bridge forms a first electrical loop between a medial end and a distal end of the electrode. Such a configuration reduces electrical resistance, heat resistance, and/or ohmic losses for improved electrical loss of the BAW filter structure. | 2022-04-28 |
20220131522 | RESONATOR AND FILTER - Provided are a resonator and a filter that exhibit preferable characteristics. This resonator has: a via electrode which is formed within a dielectric substrate; a plurality of shielded conductors which are formed in the dielectric substrate so as to surround the via electrode; and a strip line which is connected to the via electrode inside the dielectric substrate and which is disposed so as to at least face the shielded conductors, wherein, of the plurality of shielded conductors, one that is connected to a short-circuited end of the via electrode is capacitatively coupled, across a spacing, to a first input/output terminal and a second input/output terminal. | 2022-04-28 |
20220131523 | ELECTROACOUSTIC DEVICE WITH CONDUCTIVE ACOUSTIC MIRRORS - Certain aspects of the present disclosure can be implemented in an electroacoustic device. The electroacoustic device generally includes: a substrate; a bottom electrode layer disposed above the substrate; an acoustic mirror stack having a dielectric layer disposed above the bottom electrode layer and a conductive layer disposed above the dielectric layer; a piezoelectric layer disposed above the acoustic mirror stack; and one or more vias disposed between the bottom electrode layer and the conductive layer, the one or more vias electrically coupling the bottom electrode layer and the conductive layer. | 2022-04-28 |
20220131524 | AIR-GAP TYPE FBAR - Disclosed is an air-gap type film bulk acoustic resonator (FBAR) including a substrate including an air-gap portion on a top surface, a lower electrode having a polygonal plate shape above the substrate and configured to surround a top of the air-gap portion, a piezoelectric layer formed above the lower electrode, and an upper electrode formed above the piezoelectric layer. Here, the lower electrode includes an electrode non-deposited area formed between one side plate boundary surface of the polygonal plate and one side air-gap boundary surface of the air-gap portion to expose one part of a top of the air-gap portion. | 2022-04-28 |
20220131525 | TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR WITH OPTIMIZED PIEZOELECTRIC PLATE THICKNESS - Acoustic resonators and filter devices. An acoustic resonator includes a piezoelectric plate having front and back surfaces, a portion of the piezoelectric plate forming a diaphragm, and a conductor pattern on the front surface, the conductor pattern including a multi-mark interdigital transducer (IDT), fingers of the IDT on the diaphragm. A thickness between the front and back surfaces is greater than or equal to 200 nm and less than or equal to 1000 nm. | 2022-04-28 |
20220131526 | TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR WITH OPTIMIZED PIEZOELECTRIC PLATE THICKNESS AND HAVING MULTIPLE PITCHES AND MARKS - Acoustic resonators and filter devices. An acoustic resonator including a piezoelectric plate having front and back surfaces, a portion of the piezoelectric plate forming a diaphragm, and a conductor pattern on the front surface, the conductor pattern including an interdigital transducer (IDT), fingers of the IDT on the diaphragm. A thickness between the front and back surfaces is greater than or equal to 200 nm and less than or equal to 1000 nm. The IDT comprises a first portion having a first pitch and a first mark and a second portion having a second pitch and a second mark not equal to the first pitch and first mark. | 2022-04-28 |
20220131527 | FBAR STRUCTURE HAVING SINGLE CRYSTALLINE PIEZOELECTRIC LAYER AND FABRICATING METHOD THEREOF - A film bulk acoustic resonator (FBAR) structure includes a bottom cap wafer, a piezoelectric layer disposed on the bottom cap wafer, the piezoelectric layer including a single crystalline piezoelectric material, a bottom electrode disposed below the piezoelectric layer; a top electrode disposed above the piezoelectric layer; and a cavity disposed below the bottom electrode. | 2022-04-28 |
20220131528 | LADDER FILTER AND COMPOSITE FILTER DEVICE - A ladder filter includes series arm resonators, parallel arm resonators, and first and second inductors. Second ends of the parallel arm resonators are connected in common to each other and are connected to a ground potential. A first end of each of the first and second inductors is connected to a series arm, and second ends thereof are connected in common to each other and are connected to the ground potential with a capacitor therebetween. | 2022-04-28 |
20220131529 | AN ELECTRONIC DEVICE AND A METHOD FOR SUPPRESSING NOISE FOR AN ELECTRONIC DEVICE - The present invention relates to an electronic device, comprising: —a GFET; —noise suppression means comprising: —a modulation unit applying to a gate (G) of the GFET a signal V | 2022-04-28 |
20220131530 | SPACE EFFICIENT CONTROLLABLE SWITCH TYPE PHASE SHIFTER - Methods and apparatus for implementing a phase shifter in a space, e.g., chip surface area, efficient manner is described. In various embodiments a combination of switches, capacitors and a transformer are used in combination as a controllable phase shifter. In some embodiments the phase shifter supports a phase shift of 0 degrees or 180 degrees depending on the position of one or more switches. The mutual inductance of the transformer in at least some embodiments emulates one or more capacitors in a phase shift network making for an implementation that can be implemented on a semiconductor in an area efficient manner as compared to implementations using more capacitors and independent inductors. | 2022-04-28 |
20220131531 | COMPACT DIGITAL ATTENUATOR - Provided is a compact digital attenuator. The compact digital attenuator includes a first attenuation cell to an nth attenuation cell, which include a plurality of attenuation cells connected to each other in parallel through a transmission line, wherein each of the plurality of attenuation cells may include a plurality of switch elements connected to each other in parallel, wherein the plurality of switch elements may be connected to the transmission line through one contact point. | 2022-04-28 |
20220131532 | CLOCK GENERATION CIRCUIT, MEMORY AND METHOD FOR CALIBRATING CLOCK DUTY CYCLE - A clock generation circuit, a memory and a clock duty cycle calibration method are provided; the clock generation circuit comprises: an oscillation circuit, configured to generate a first oscillation signal and a second oscillation signal, a frequency of the first oscillation signal is same as a frequency of the second oscillation signal, and a phase of the first oscillation signal is opposite to a frequency of the second oscillation signal; a comparison unit, configured to receive the first oscillation signal and the second oscillation signal, and compare the duty cycle of the first oscillation signal and/or the duty cycle of the second oscillation signal; and a logical unit, connected to the comparison unit and the oscillation circuit, and configured to control the oscillation circuit according to an output result of the comparison unit, so that the duty cycle reaches a preset range. | 2022-04-28 |
20220131533 | COMPLEMENTARY CLOCK GATE AND LOW POWER FLIP-FLOP CIRCUIT INCLUDING SAME - A complementary clock gate, includes a NOR gate configured to receive a data signal D and a signal QI; a first P-type transistor gated by an output value of the NOR gate; and a NAND gate, connected in series to the first P-type transistor, configured to receive a clock signal CK and an inverted data signal DN, and output an inverted clock signal CKB. | 2022-04-28 |
20220131534 | RING OSCILLATOR, CONTROLLING CIRCUIT AND METHODS FOR REALIGNMENT - A controlling circuit for ring oscillator is provided. A first transistor and a second transistor of a first conductive type are coupled in series and between a node and a first power source. A third transistor and a fourth transistor of a second conductive type are coupled in parallel and between the node and a second power source. The node is coupled to an input of a delay chain of the ring oscillator. The second and third transistors are coupled in series. Gates of the second and third transistors are configured to receive an output signal of the delay chain. When the first transistor is turned off and the fourth transistor is turned on, the node is pulled to a first logic level from a second logic level in order to align a phase of a waveform of the ring oscillator. | 2022-04-28 |
20220131535 | ADJUSTABLE DELAY LINE DEVICES AND METHODS THEREOF - A switched delay section for an integrated circuit device is disclosed. The switched delay section includes a segmented inductor loop comprising a plurality of segments separated by nodes. A plurality of capacitors are coupled between the segmented inductor loop to provide a plurality of delay sections. An image loop is in electrical communication with the segmented inductor loop. The image loop includes a switch configured to place the plurality of capacitors in one of a high capacitance or a low capacitance state to provide a variable delay value. | 2022-04-28 |
20220131536 | METHOD AND APPARATUS FOR PRECISION PHASE SKEW GENERATION - A method and apparatus of generating precision phase skews is disclosed. In some embodiments, a phase skew generator includes: a charge pump having a first mode of operation and a second mode of operation, wherein the first mode of operation provides a first current path during a first time period, and the second mode of operation provides a second current path during a second time period following the first time period; a sample and hold circuit, coupled to a capacitor, and configured to sample a voltage level of the capacitor at predetermined times and provide an output voltage during a third time period following the second time period; and a voltage controlled delay line, coupled to the sample and hold circuit, and having M delay line stages each configured to output a signal having a phase skew offset with respect to preceding or succeeding signal. | 2022-04-28 |
20220131537 | DUTY CYCLE CORRECTION METHOD AND CIRCUIT THEREOF - The inventive concepts relate to methods for duty cycle correction of an input signal and circuits thereof. The method comprising following operations of generating, a plurality of intermediate delayed input signals, each delayed by at least a unit delay, through a delay line driven by the input signal, selecting from among the plurality of delayed input signals, through a first control signal, where the selection is based on number of unit delays in the input signal, generating at least an incremented duty signal and a decremented duty signal based on the selected delayed signals and the input signal, generating, a corrected duty cycle based on the selection of at least one of: the incremented duty cycle or decremented duty cycle by providing a second control signal. The inventive concepts offer low power consumption and low area for correction or adjustment of the duty cycle of the input signal with higher probability or guaranteed monotonicity. | 2022-04-28 |
20220131538 | THRESHOLD DETECTOR OF A POWER ON RESET CIRCUIT WITH IMPROVED ACCURACY FOR SWITCHING LEVELS OVER TEMPERATURE VARIATIONS - A power on reset circuit includes a threshold detector circuit. The threshold detector circuit includes a power supply voltage, a voltage comparator, first circuitry, second circuitry, and third circuitry. The voltage comparator has first and second input terminals, and an output terminal to provide a reset signal. The first circuitry is operable to convert the power supply voltage to a sensed current, and provides a positive temperature coefficient to the sensed current. The second circuitry is operable to generate, based on the sensed current, a temperature-dependent voltage corresponding to the power supply voltage and to couple the temperature-dependent voltage to the first input of the voltage comparator. The third circuitry is operable to generate, based on the sensed current, a reference voltage and to couple the reference voltage to the second input of the voltage comparator. | 2022-04-28 |
20220131539 | FAST ACTIVE CLAMP FOR POWER CONVERTERS - A switching system can include a main switching device configured to switch a voltage, a gate driver having an output coupled to a drive terminal of the main switching device and configured to deliver a drive signal to the main switching device, and a clamp circuit. The clamp circuit can be coupled to the drive terminal of the main switching device. The clamp circuit can include a logic gate configured to drive a clamp switching device coupled to and configured to clamp a voltage at the drive terminal of the main switching device. A drive signal of the clamp switching device can be substantially complementary to the main switching device drive signal. The logic gate can provide at least a portion of a delay between switching transitions of the main switching device and switching transitions of the clamp switching device. | 2022-04-28 |
20220131540 | LOAD CONTROL DEVICE HAVING A CAPACITIVE TOUCH SURFACE - A control device configured for use in a load control system to control one or more electrical loads external to the control device may include an antenna and an actuation member having a front surface defining a touch sensitive surface configured to detect a touch actuation along at least a portion of the front surface. The control device may include a main printed circuit board (PCB) comprising a control circuit, an antenna PCB connected to the main PCB, a tactile switch(es), a controllably conductive device, and a drive circuit operatively coupled to a control input of the controllably conductive device for rendering the controllably conductive device conductive or non-conductive to control the amount of power delivered to the electrical load. The antenna may extend substantially perpendicular from the main PCB through an opening in the yoke and into a cavity defined by the actuation member and the yoke. | 2022-04-28 |
20220131541 | CAPACITIVE LOGIC CELL WITH COMPLEMENTARY CONTROL - A capacitive logic cell with complementary control, including a variable-capacitance electromechanical device having a fixed part and a mobile part, the electromechanical device comprising first, second, third and fourth electrodes mounted on the fixed part, and a fifth electrode mounted on the mobile part, the first electrode being connected to a terminal for supplying a first input logic signal, the second electrode being connected to a terminal for supplying a second input logic signal, complementary to the first input logic signal, the third electrode being connected to a terminal for supplying a first output logic signal, and the fourth electrode being connected to a terminal for supplying a second output logic signal, complementary to the first output logic signal. | 2022-04-28 |
20220131542 | OUTPUT BUFFER HAVING SUPPLY FILTERS - An electronic device may include one or more output buffers each including a pair of final p-channel metal oxide semiconductor (PMOS) and n-channel metal oxide semiconductor (NMOS) transistors, a first pre-buffer to drive the PMOS transistor, and a second pre-buffer to drive the NMOS transistor. Each output buffer receives power from a pre-buffer supply filtering circuit, which may include a supply capacitor for stabilizing supply voltage, a low-pass first pre-buffer supply filter to filter the voltage supplied to the first pre-buffer, and a low-pass second pre-buffer supply filter the voltage supplied to the second pre-buffer. | 2022-04-28 |
20220131543 | HIGH-FREQUENCY HIGH-LINEAR INPUT BUFFER DIFFERENTIAL CIRCUIT - A high-frequency high-linear input buffer includes a first MOS transistor, a second MOS transistor, a third MOS transistor, and a signal panning unit. A gate terminal of the first MOS transistor is used as an input terminal of the buffer. A current input terminal of the first MOS transistor is connected to a current output terminal of the second MOS transistor. A current output terminal of the first MOS transistor is connected to a current input terminal of the third MOS transistor. A current input terminal of the second MOS transistor is connected to a gate terminal of the third MOS transistor. An input terminal of the signal panning unit is connected to an input terminal of the buffer. An output terminal of the signal panning unit is connected to a gate terminal of the second MOS transistor. An output terminal of the third MOS transistor is connected to ground. | 2022-04-28 |
20220131544 | SYNCHRONIZATION CIRCUIT, A SERIALIZER USING THE SYNCHRONIZATION CIRCUIT, AND A DATA OUTPUT CIRCUIT USING THE SYNCHRONIZATION CIRCUIT AND THE SERIALIZER - A synchronization circuit includes a precharge circuit and a signal driving circuit. The precharge circuit precharges an output node to a first logic level. The signal driving circuit detects, in synchronization with a second dock signal having a phase leading a first clock signal, a logic level of an input signal and drives, in synchronization with the first clock signal, the output node to a second logic level according to the logic level of the input signal. | 2022-04-28 |
20220131545 | OSCILLATION CIRCUIT AND CLOCK GENERATION CIRCUIT - An oscillation circuit includes: a power supply generation module, configured to generate a positive temperature coefficient voltage based on a positive temperature coefficient current; and an oscillator, the positive temperature coefficient voltage serving as a power supply of the oscillator. The oscillator includes: a first ring topological structure, formed by a plurality of first inverters connected end to end and configured to transmit an oscillation signal at a first transmission speed; and a second ring topological structure, formed by a plurality of second inverters connected end to end and configured to transmit the oscillation signal at a second transmission speed. The first ring topological structure is electrically connected with the second ring topological structure, and the second transmission speed is less than the first transmission speed. | 2022-04-28 |
20220131546 | FREQUENCY MODULATION SYSTEM BASED ON PHASE-LOCKED LOOP CAPABLE OF PERFORMING FAST MODULATION INDEPENDENT OF BANDWIDTH AND METHOD OF THE SAME - The present invention relates to a frequency modulation method based on a phase-locked loop capable of performing fast modulation independent of bandwidth. | 2022-04-28 |
20220131547 | PLL CIRCUIT USING INTERMITTENT OPERATION AMPLIFIER - A PLL circuit includes a phase comparator, an integrator path, a proportional path, a current controlled oscillator, a divider, and a double integrator path. The double integrator path includes an intermittent operation gm amplifier, a filter circuit, and a voltage-current conversion circuit. The intermittent operation gm amplifier receives an output voltage of a filter circuit. When a pulse CLK for an intermittent operation is ON, the intermittent operation gm amplifier outputs its voltage to the filter circuit. When the pulse CLK for the intermittent operation is OFF, the intermittent operation gm amplifier does not output the output voltage of the filter circuit to the filter circuit. Even when the pulse CLK for the intermittent operation is OFF, an input potential of the voltage-current conversion circuit is held by the filter circuit, and a current to the current controlled oscillator flows. This makes it possible to oscillate at a high frequency without increasing an area of the filter circuit. | 2022-04-28 |
20220131548 | SYSTEM AND METHOD OF PERFORMING DISCRETE FREQUENCY TRANSFORM FOR RECEIVERS USING SINGLE-BIT ANALOG TO DIGITAL CONVERTERS - A system and method for performing discrete frequency transform including a pair of single-bit analog to digital converters (ADCs), a phase converter, a memory, a discrete frequency transform converter and summation circuitry. The ADCs convert an analog input signal into N pairs of binary in-phase and quadrature component samples each being one of four values at a corresponding one of four phases. The phase converter determines a phase value for each pair of component samples. The memory stores a set of discrete frequency transform coefficient values based on N. The discrete frequency transform converter uses a phase value and a pair of discrete frequency transform coefficient values retrieved from the memory for a selected frequency bin to determine a discrete frequency component for each pair of phase component samples. The summation circuitry sums the corresponding N frequency domain components for determining a frequency domain value for the selected frequency bin. | 2022-04-28 |
20220131549 | ANALOG-TO-DIGITAL CONVERTER SYSTEM USING REFERENCE ANALOG-TO-DIGITAL CONVERTER WITH SAMPLING POINT SHIFTING AND ASSOCIATED CALIBRATION METHOD - An analog-to-digital converter (ADC) system includes a main ADC, a reference ADC, a sampling control circuit, and a calibration circuit. The main ADC obtains a first sampled input voltage by sampling an analog input according to a first sampling clock, and performs analog-to-digital conversion upon the first sampled voltage to generate a first sample value. The reference ADC obtains a second sampled voltage by sampling the analog input according to a second sampling clock, and performs analog-to-digital conversion upon the second sampled voltage to generate a second sample value. The sampling control circuit controls the second sampling clock to ensure that the second sampling clock and the first sampling clock have a same frequency but different phases, and adjusts the second sample value to generate a reference sample value. The calibration circuit applies calibration to the main ADC according to the first sample value and the reference sample value. | 2022-04-28 |
20220131550 | DIFFERENTIAL CONVERTER WITH OFFSET CANCELATION - In described examples, a sample and hold circuit is configured to periodically connect one input of an op-amp to a reference voltage through a switch while a second input of the op-amp is connected to an output of the op-amp. Offset cancellation is performed by storing a sampled offset on a sampling capacitor coupled to the second input of the op-amp. | 2022-04-28 |
20220131551 | CURRENT-BASED TRACK AND HOLD CIRCUIT - An example sample-and-hold circuit includes a first and second input resistors, each having first and second terminals; first and second transistors coupled in series between the second terminals of the first and second input resistors; and third and fourth input resistors, each having first and second terminals; and third and fourth transistors coupled in series between the second terminals of the third and fourth input resistors. The control terminals of the first and third transistors are coupled together, and the control terminals of the second and fourth transistors are coupled together. | 2022-04-28 |
20220131552 | TRACKING ANALOG-TO-DIGITAL CONVERTER FOR POWER CONVERTERS - A tracking analog-to-digital converter (ADC) for a power converter includes a first tracking loop and a second tracking loop. The first tracking loop is configured to track a voltage input to the tracking ADC using one or more comparators and has a re-clocking circuit to mitigate the impact of comparator output metastability, but introduces multi-cycle latency which increases a residual error of the voltage tracking provided by the first tracking loop. The second tracking loop is configured to supplement the voltage tracking provided by the first tracking loop and to reduce the residual error of the voltage tracking for dynamic changes at the voltage input. The second tracking loop has a single-cycle latency and is implemented with logic that is less sensitive to logic errors due to comparator metastability. Corresponding methods of voltage tracking and an electronic system are also described. | 2022-04-28 |
20220131553 | CODEBOOK COMPRESSION WITH LOSSY ENCODING FOR LOW PROBABILITY EVENTS - Aspects relate to compression of messages in a wireless communication system. For messages, such as ACK/NACK feedback in a communication system, messages having an occurrence above or below a certain number of events (e.g., ACK/NACK events) or a probability of the occurrence may be compressed into a single message. By compressing the messages into a single message, the overhead used to transmit such messages may be reduced. | 2022-04-28 |
20220131554 | METHODS AND DEVICES FOR VECTOR SEGMENTATION FOR CODING - A method for partitioning of input vectors for coding is presented. The method comprises obtaining of an input vector. The input vector is segmented, in a non-recursive manner, into an integer number, N | 2022-04-28 |
20220131555 | DATA COMPRESSION APPARATUS AND DATA COMPRESSION METHOD - A compression engine calculates replacement CRC codes, in predetermined data lengths, for DIF-in cleartext data including cleartext data and multiple CRC codes based on the cleartext data. The compression engine generates headered compressed-text data in which a header including the replacement CRC codes is added to compressed-text data in which the cleartext data is compressed, and generates code-in compressed-text data by calculating multiple CRC codes based on the headered compressed-text data to add the calculated CRC codes to the headered compressed-text data. | 2022-04-28 |
20220131556 | SYSTEM AND METHOD FOR SELECTING A LOSSLESS COMPRESSION ALGORITHM FOR A DATA OBJECT BASED ON PERFORMANCE OBJECTIVES AND PERFORMANCE METRICS OF A SET OF COMPRESSION ALGORITHMS - A method for managing data includes obtaining a compression algorithm selection request for a data object, wherein the data object is generated by a production host, identifying, in response to the compression algorithm selection request, a set of production host performance objectives of the production host, performing a compression algorithm selection analysis using the set of production host performance objectives and a compression selection model to obtain a compression algorithm selection for a compression algorithm, specifying the compression algorithm to the production host using a data agent, wherein the data agent is operatively connected to the production host, initiating a compression on the data object using the data agent by applying the compression algorithm to obtain a compressed data object, and initiating a storage of the compressed data object. | 2022-04-28 |
20220131557 | TRANSMITTER AND PARITY PERMUTATION METHOD THEREOF - A transmitter is provided. The transmitter includes: a Low Density Parity Check (LDPC) encoder configured to encode input bits to generate parity bits; a parity permutator configured to group-wise interleave a plurality of bit groups including the parity bits; and a puncturer configured to select some of the parity bits in the group-wise interleaved bit groups and puncture the selected parity bits, wherein the parity permutator group-wise interleaves the bit groups such that some of the bit groups at predetermined positions in the bit groups before the group-wise interleaving are positioned serially after the group-wise interleaving and a remainder of the bit groups before the group-wise interleaving are positioned without an order after the group-wise interleaving so that the puncturer selects parity bits included in the some of the bit groups sequentially and selects parity bits included in the remainder of the bit groups without an order. | 2022-04-28 |
20220131558 | Method for constructing an n-qubit fault tolerant encode for any k-qubit quantum gate, M, in any given quantum code [n, k, C] - A method for constructing an n-qubit fault tolerant encode for any k-qubit quantum gate M, in any given quantum code [n, k, C], comprising: choosing a number n−k of independent spinors S | 2022-04-28 |
20220131559 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A communication device that applies an error in an upper layer in addition to error correction in a physical layer is provided. | 2022-04-28 |
20220131560 | RADIO FREQUENCY CIRCUIT AND TERMINAL DEVICE - A radio frequency circuit includes a radio frequency front-end module, a switch module and an antenna module. The radio frequency front-end module includes a radio frequency transceiver and a first processing module connected to the radio frequency transceiver, the antenna module includes an antenna for receiving or transmitting a radio frequency signal, and the first processing module is configured to transmit a signal of a first network and a signal of a second network. | 2022-04-28 |
20220131561 | TRANSMITTER WITH SLEW RATE CONTROL - A transmitter includes a pre-driver stage circuitry, a post-driver stage circuitry, and resistance adjustment circuits. The pre-driver stage circuitry is configured to output a second data signal according to a first data signal. The post-driver stage circuitry is configured to output a third data signal according to the second data signal. The resistance adjustment circuits are configured to provide a first variable resistor and a second variable resistor, and transmit a first power supply voltage and a second power supply voltage to at least one of the pre-driver stage circuitry or the post-driver stage circuitry, in order to adjust a slew rate of the third data signal. | 2022-04-28 |
20220131562 | RADIO FREQUENCY LOOPBACK FOR TRANSCEIVERS - Methods and devices for radio frequency (RF) loopback for transceivers are described. A transceiver for communicating RF signals with a target device may transmit signals at a transmit frequency and receive signals at a (different) receive frequency. The transceiver may include a waveguide diplexer for separating and combining signals based on frequency. The transceiver may be configured to couple a loopback signal from a common port of the waveguide diplexer; the loopback signal may be based on a transmit signal. The transceiver may include a loopback translator to translate the loopback signal from the transmit frequency to the receive frequency and provide the translated loopback signal to a receiver used for receiving signals from the target device. The receiver may compare the translated loopback signal with a representation of the transmit signal to generate a compensation signal. A transmitter may use the compensation signal to adjust subsequent transmit signals. | 2022-04-28 |
20220131563 | CIRCUIT ARRANGEMENT AND METHOD FOR ADJUSTING SIGNAL PARAMETERS - A circuit arrangement capable of adjusting signal parameters of a plurality of signals that is transmitted between one or more terminals and one or more antennas is provided. The circuit arrangement is configured to separate a common signal path for the plurality of signals into a plurality of individual signal paths, wherein two or more signal paths of the plurality of signal paths are configured to carry different single signals. A signal adjusting section is configured to independently adjusting one or more signal parameters for two or more single signals. | 2022-04-28 |
20220131564 | Interference Mitigation Based on Antenna System Phase Distribution - A method of interference mitigation may include receiving a desired signal from an asset of the system at an antenna assembly and associating the desired signal with relative phase distribution information based on a relative location of origin of the desired signal where the relative phase distribution information is predetermined for the antenna assembly. The method further includes receiving an interfering signal and associating the interfering signal with relative phase distribution information based on a relative location of origin of the interfering signal where the desired signal and the interfering signal forming a received signal set. The method further includes normalizing signals of the received signal set to respective relative phases associated with each respective relative location of origin, and performing interference cancellation of the interfering signal based on the normalized signals. | 2022-04-28 |
20220131565 | RECEIVING APPARATUS AND COMMUNICATION SYSTEM - A receiving apparatus includes: a receiving module that is a fixed circuit whose internal processing procedure is not able to be changed, the receiving module performing demodulation processing on a reception signal to generate a binary hard decision sequence; and an external reception controller including a receiving module controller to control the receiving module, and a redundancy decoder to redundantly decode the binary hard decision sequence output from the receiving module for conversion into a multilevel sequence, wherein the redundancy decoder redundantly decodes the binary hard decision sequence by combining values weighted based on reliability. | 2022-04-28 |
20220131566 | WIRELESS TRANSMISSION SYSTEM AND CONTROL METHOD - A wireless transmission system includes a first coupler including a plurality of substrates including a signal line and a ground; and a second coupler that transmits a signal with the first coupler. A first substrate is connected to a second substrate by conductors having widths substantially equal to or less than widths of signal lines. | 2022-04-28 |
20220131567 | COMMUNICATION CIRCUITRY PERFORMING COMMUNICATION USING A PLURALITY OF FREQUENCY BANDS AND ELECTRONIC DEVICE COMPRISING THE COMMUNICATION CIRCUITRY - Communication circuitry and an electronic device including the communication circuitry are disclosed. The communication circuitry may include a first RF chain configured to output a first transmission signal in a first frequency band through a first antenna or receive a first reception signal in the first frequency band through the first antenna; a second RF chain configured to output a second transmission signal in a second frequency band through a second antenna or receive a second reception signal in the second frequency band through the second antenna; a first reception chain configured to receive a first signal in the first frequency band, which is received through the second antenna; a second reception chain configured to receive a second signal in the second frequency band, which is received through the first antenna; and a switch configured to connect the first RF chain and the second reception chain to the first antenna and connect the second RF chain and the first reception chain to the second antenna. | 2022-04-28 |
20220131568 | Next-Generation Ultra-Wideband Frame Formats - Methods, systems, and apparatuses are presented to transmit fragmented communication frames, such as fragmented ultra-wideband (UWB) frames. In some implementations, a communication frame may be divided into a plurality of fragments, and the fragments may be transmitted across a plurality of regulatory test intervals. E.g., each fragment may be transmitted within a mutually-exclusive regulatory test interval. In some implementations, each fragment may be constrained in time and/or transmission power, such that the total energy emitted during transmission of the fragment remains within a maximum energy limit defined for the regulatory test interval, e.g., by a regulatory entity. In some implementations, the sum of the energy emitted during transmission of two or more fragments may exceed the maximum energy limit defined for the regulatory test interval. | 2022-04-28 |
20220131569 | Partial Echo Cancellation Duplexing - Methods, circuitries, and systems for transmitting data upstream between a first device and a second device and downstream between the second device and the first device are disclosed. A method includes determining an upstream crosstalk effect for an upstream channel and determining a downstream crosstalk effect for a downstream channel. The crosstalk effect includes near end crosstalk from a third device that is non-co-located with respect to the first device and the second device. A data rate of an upstream transmission or downstream transmission is adjusted based on the upstream crosstalk effect and the downstream crosstalk effect. | 2022-04-28 |
20220131570 | Communication and Interaction Method and System - The disclosure provides a communication and interaction method and a communication and interaction system using the communication interaction method. The communication and interaction method for communicating and interacting between an electric unit and a power supply unit, including: providing a communication module between the power supply unit and the electric unit; the power supply unit sends a first identification information to the electric unit through the communication module; the electric unit parses the first identification information through the communication module; and the communication module, on the basis of its own communication structure, matches a communication mode and a communication protocol which are applicable to the power supply unit and the electric unit at the same time, such that the communication between the electric unit and the power supply unit is established. | 2022-04-28 |