Patent application number | Description | Published |
20140097874 | SYSTEMS AND METHODS OF HARMONIC EXTRACTION AND REJECTION - A device includes a first hybrid, where a first input of the first hybrid is coupled to an output of a first amplifier configured to receive a first input signal. A first input of a second hybrid is coupled to an output of a second amplifier configured to receive a second input signal. The device includes a first phase shifter configured to receive the first input signal and a second phase shifter configured to receive the second input signal. An output of the first phase shifter is coupled to an input of a third amplifier, and an output of the third amplifier is coupled to a second input of the second hybrid. An output of the second phase shifter is coupled to an input of a fourth amplifier, and an output of the fourth amplifier is coupled to a second input of the first hybrid. | 04-10-2014 |
20140176217 | SIGNAL COMPONENT REJECTION - A method includes providing a first local oscillator signal having a first duty cycle to a first mixer unit and providing a second local oscillator signal having a second duty cycle to a second mixer unit. At least one of the first duty cycle or the second duty cycle is greater than fifty percent. A frequency of the first local oscillator signal approximately equals a frequency of the second local oscillator signal. The method may also include generating a modulated output signal based on an output signal of the first mixer unit and based on an output signal of the second mixer unit. | 06-26-2014 |
20140179245 | METHOD AND APPARATUS FOR GENERATING IN-PHASE (I) AND QUADRATURE-PHASE (Q) SIGNALS - In a particular embodiment, a method of generating in-phase (I) and quadrature-phase (Q) signals includes generating a first I output signal based on a first I input signal, a second I input signal, a first Q input signal, and a second Q input signal. The method further includes generating a second I output signal based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. A first Q output signal is generated based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. A second Q output signal is generated based on the first I input signal, the second I input signal, the first Q input signal, and the second Q input signal. According to further embodiments, an apparatus is disclosed. | 06-26-2014 |
20150340991 | MULTI-BAND POWER AMPLIFIER - An apparatus includes a first capacitor, an inductor coupled to the first capacitor, and a second capacitor coupled to the inductor. The second capacitor is coupled to a first output of a differential amplifier. | 11-26-2015 |
20160036136 | MULTIPLE POLARIZATION ELECTROMAGNETIC WAVE CIRCUITS AND METHODS - The present disclosure includes multiple polarization electromagnetic wave circuits and methods. In one embodiment, sensors are placed along different axes of an antenna. Sensors along an axis produce a differential signal when a wave on the antenna is polarized along the axis of the sensors. Sensors along another axis produce a common mode signal when a wave on the antenna is polarized along a different axis of the sensors. Another aspect of the disclosure includes a network of inductors arranged in a ring between a transceiver and a multiport antenna. Switches may be configured to couple ports of the antenna to ports of the transceiver to transmit and receive different polarizations. | 02-04-2016 |
20160036390 | MULTI-MODE INTEGRATED POWER AMPLIFIER - A method and apparatus are disclosed for transmitting communication signals through a multi-mode power amplifier. For at least some embodiments, a communication signal may be amplified by an amplifier of the multi-mode power amplifier selected based on a desired transmit output power. The output of the selected amplifier may be coupled through a configurable inductive element to an antenna. The inductive element may be configured as a balun or as an inductive load element based on an operating mode of the multi-mode power amplifier. | 02-04-2016 |
20160036393 | LINEARIZED GATE CAPACITANCE IN POWER AMPLIFIERS - An apparatus includes: a plurality of amplification stages, each stage comprising a cascode transistor; and a bridge circuit coupled between gate terminals of cascode transistors in two adjacent stages of the plurality of amplification stages, the bridge circuit including a plurality of diodes. | 02-04-2016 |
20160065263 | DUAL BAND CONCURRENT TRANSCEIVER - A method and apparatus are disclosed for concurrently transmitting and/or receiving two or more communication signals by a wireless device. The communication signals may include signals described by two or more communication protocols, such as Wi-Fi communication signals and BLUETOOTH communication signals. For at least some embodiments, the Wi-Fi communication signals may be within a 2.4 GHz or 5 GHz frequency band. In some embodiments, the apparatus may include a configurable switch unit to couple the Wi-Fi communication signals and/or the BLUETOOTH communication signals to an antenna through a diplexer and a filter. | 03-03-2016 |
20160072455 | MULTI-BAND LOW NOISE AMPLIFIER - An apparatus includes a first path tuned to a first frequency band and a second path tuned to a second frequency band. The apparatus also includes cross-coupled circuitry having a first input coupled to the first path and a second input coupled to the second path and having a first output coupled to the second path and a second output coupled to the first path. | 03-10-2016 |
20160072456 | DUAL-BAND LOW NOISE AMPLIFIER - An apparatus includes amplification circuitry configured to amplify a radio frequency (RF) signal. The apparatus also includes differential inductors coupled to an output of the amplification circuitry. The differential inductors include a first inductor serially coupled to a second inductor, and the differential inductors are configured to filter the RF signal and to provide a differential output. | 03-10-2016 |