KMW INC. Patent applications |
Patent application number | Title | Published |
20160141765 | RADIO COMMUNICATION ANTENNA HAVING NARROW BEAM WIDTH - In the present invention, a radio communication antenna having a narrow beam width comprises: a reflecting plate provided in the form of a plate of rectangular shape; and one radiating module disposed on the reflecting plate and generating x-polarized waves. Here: the radiating module comprises four radiating elements of dipole structure; the four radiating elements are respectively disposed at four edge portions of the reflecting plate, and each comprises two radiating arms placed in the direction extending along both sides relative to the edges; and, among the four radiating elements, those radiating elements that face each other diagonally are linked in movement so as to generate one of the x-polarized waves. | 05-19-2016 |
20160088712 | DEVICE FOR CONTROLLING BRIGHTNESS OF LIGHTING DEVICE - The present invention relates to a device for controlling the brightness of a lighting device, comprising: a camera module for photographing a lighting area of the lighting device comprising a plurality of streetlights; a brightness controller for calculating an average brightness of the lighting area by receiving a photographed image of the camera module, and for comparing the average brightness with a reference brightness and transmitting a brightness control signal according to the comparison result; and a streetlight device unit provided in each of the streetlights of the lighting device so as to adjust the brightness of an LED light source unit according to the brightness control signal of the brightness controller. According to the present invention, an average brightness of an area illuminated by a lighting device which is a set of a plurality of streetlights can be calculated by processing an image from a camera obtained by photographing the area, and the brightness of the lighting device can be controlled according to the average brightness, thereby solving existing problems of brightness control according to a difference between the brightness at a sensor location and the average brightness of the lighting device. | 03-24-2016 |
20160064815 | ANTENNA EQUIPPED WITH HORIZONTALLY ARRANGED RADIATING ELEMENTS - The present invention relates to a base station antenna for mobile communication, the antenna, equipped with horizontally arranged radiating elements and connected to a base station system, comprising: a reflective plate disposed in the interior of a multiple-input multiple-output antenna; a plurality of antennas disposed on the planar surface of the reflective plate; and a moving unit for moving the plurality of antennas vertically within the range of the planar surface of the reflective plate. | 03-03-2016 |
20160061394 | STAND-TYPE LED LIGHTING DEVICE - The present invention relates to a stand-type LED lighting device comprising: a stand part; a support part fixed to the stand part and extending upwards; and a lighting part fixed to the upper part of the support part and emits light, wherein the lighting part comprises: an inclined reflective plate; an upper lighting part positioned above the reflective plate; and a lower lighting part positioned below the reflective plate. In the present invention, the lighting part is divided into the upper and lower lighting parts, and the reflective plate is provided between the upper and lower lighting parts so as to enable each or both of the upper lighting part and the lower lighting part to be used according to a user's selection, thereby enabling the stand-type LED lighting device to be used as a room lighting lamp or a mood lamp, in accordance with circumstances. | 03-03-2016 |
20150381243 | ANTENNA SHARING DEVICE FOR WIRELESS ACCESS NODE SYSTEMS IN WIRELESS COMMUNICATION NETWORK - The present invention relates to a device for sharing the antennas of wireless access node systems in a wireless communication network comprising a wireless access node system A and a wireless access node system B, each of which comprises at least one transmission/reception unit for processing transmission/reception signals in at least one frequency band, the device comprising: an MIMO coupler A for coupling a signal in a first transmission/reception route among multiple input multiple output (MIMO) routes for said at least one transmission/reception unit of the wireless access node system A, and a signal in a second transmission/reception route among MIMO routes for said at least one transmission/reception unit of the wireless access node system B, to the antenna of the wireless access node system A; and an MIMO coupler B for coupling a signal in a first transmission/reception route among the MIMO routes for said at least one transmission/reception unit of the wireless access node system B, and a signal in a second transmission/reception route among the MIMO routes for said at least one transmission/reception unit of the wireless access node system A, to the antenna of the wireless access node system B. | 12-31-2015 |
20150381212 | APPARATUS FOR TUNING VOLTAGE STANDING WAVE RATIO OF BASE STATION SYSTEM IN WIRELESS COMMUNICATION NETWORK - Provided is an apparatus for tuning the voltage standing wave ratio (VSWR) of a base station system in a wireless communication network, the apparatus comprising: a VSWR changing unit for changing the characteristics of the VSWR of an antenna by changing electrical signal transmission characteristics of an internal power feedline by means of an external operation, or by changing the characteristics for transceiving a radiating member; a driving unit for driving the VSWR changing unit in accordance with a control signal; a VSWR detection unit for detecting the corresponding VSWR for the installed antenna and generating a detection signal on the basis thereof; and a control unit for controlling the actions of the VSWR changing unit for changing the VSWR characteristics by controlling the operation of the driving unit, if a VSWR characteristic is determined to be in an abnormal state on the basis of the detection signal generated by the VSWR detection unit. | 12-31-2015 |
20150380831 | ANTENNA EQUIPPED WITH VERTICALLY ARRANGED RADIATING ELEMENTS - The present invention relates to a base station antenna for mobile communication, the antenna, equipped with vertically arranged radiating elements and connected to a base station system, comprising: a reflective plate disposed in the interior of the antenna; a plurality of radiating elements disposed on the planar surface of the reflective plate; and a moving unit for moving the plurality of radiating elements vertically within the range of the planar surface of the reflective plate. | 12-31-2015 |
20150380793 | RADIO FREQUENCY FILTER - The present invention relates to a radio frequency filter comprising: a first filter unit for filtering a signal in a first frequency band, which is a basic frequency band; a second filter unit for filtering a signal in a second frequency band, which is an additional frequency band in addition to the basic frequency band; and a switching unit having a structure in which at least one resonance terminal among one or more resonance terminals constituting the second filter unit is connected to or blocked from a ground terminal so as to eliminate or maintain the resonance function of the relevant resonance terminal(s). | 12-31-2015 |
20150267876 | HIGH POWER LED LIGHTING DEVICE - A high power LED lighting device is provided that includes a case, a substrate disposed in the case and including a plurality of LED chips are mounted thereon, and a reflection module connected to the substrate and including a plurality of light reflection semi-spheres protruding from a plate body. The device provides improved heat discharging properties, among others. | 09-24-2015 |
20150263431 | ANTENNA FOR MOBILE-COMMUNICATION BASE STATION - The present invention relates to an antenna for a mobile-communication base station and includes a reflective plate, and a first radiant element having a first frequency band formed on the reflective plate, wherein the first radiant element includes: a slot structure that is formed as a letter “X” hole directly in the entire reflective plate and generates a transmission signal having X-shaped dual polarizations that are orthogonal to each other, and a metallic patch plate that is installed on the top of the slot structure so as to be insulated from the reflective plate. | 09-17-2015 |
20150263415 | ANTENNA PROVIDED WITH APPARATUS FOR EXTENDING BEAM WIDTH FOR MOBILE COMMUNICATION BASE STATION - Disclosed is an antenna provided with an apparatus for extending beam width for a mobile communication base station. An antenna for a base station according to an embodiment of the present invention comprises: a reflector plate; an emitting element disposed on the reflector plate; and an apparatus for extending the width of a beam, the apparatus being fixedly disposed at a previously set distance from the emitting element in the direction of emission thereof and made of thin metal. | 09-17-2015 |
20150244069 | ANTENNA OF MOBILE COMMUNICATION BASE STATION AND METHOD FOR CONTROLLING SAME - The present invention relates to an antenna of a mobile communication base station, comprising; an RET driving unit, an RAS driving unit, and an RAB driving unit, each comprising a driving motor, for driving electrical and mechanical devices for respectively adjusting RET, RAS and RAB; and multi-function equipment for controlling the driving of the RET driving unit, the RAS driving unit and the RAB driving unit by communicating with a main system of a base station such that at least a control signal for controlling the RET, the RAS, and the RAB is received. | 08-27-2015 |
20150241023 | LED LIGHTING APPARATUS - The present invention relates to an LED lighting apparatus, comprising: a case part which covers a residual part, excluding a light-emitting surface, to provide a reflective space and has a predetermined depth and in which an upper edge of the inside thereof has a slope; a receiving surface in which a lateral surface portion of the case part is bent toward the inside of the case; a substrate fixed on the receiving surface and in which a plurality of LEDs are provided; and a reflective part which is located in an upper center portion of the inside of the case part so as to reflect the light of the LEDs and enables reflection and diffusion of light within the reflective space provided from the case part. The present invention can easily provide a variety of purposes by simply replacing an existing reclamation type fluorescent lighting fixture and easily provide lighting having an illumination intensity required for a setting position by enabling an expansion into a plurality of LED lighting apparatus as necessary. | 08-27-2015 |
20150156818 | SMALL BASE STATION FOR MOBILE COMMUNICATION SYSTEM - The present invention discloses a base station, the size of which is reduced and which is to be adopted in a mobile communication system. The disclosed small base station includes: a polyhedral housing; an antenna unit disposed on the widest surface of the outer surface of the housing; a first board arranged on any outer surface of the housing; and two or more boards which are arranged in an upright state with the first board and which are arranged to face three or more outer side surfaces of the housing, respectively. | 06-04-2015 |
20150155622 | DUAL POLARIZATION ANTENNA INCLUDING ISOLATION PROVIDING DEVICE - The present invention relates to a dual-polarization antenna including an isolation providing device including: a transmission antenna element outputting a transmission signal provided via a feeder through a first port; a receiving antenna element receiving a reception signal so as to provide same to the second port; a first coupler distributing part of the transmission signal; an equalizer equalizing the distributed signal from the first coupler to a preset waveform; a second coupler receiving the output of the equalizer so as to couple same to a signal output to the second port; and a conductor forming a signal delivery path between the first coupler, the equalizer, and the second coupler. The coupling performance of the first and second couplers, the length of the conductor, and the functional characteristics of the equalizer are designed to allow a signal coupled to the second port through the signal delivery path using the conductor to have substantially identical amplitudes and a 180 phase difference, and an identical shape in an overall operating frequency band in contrast to a signal falsely inputted to a receiving antenna from the transmitting antenna element. | 06-04-2015 |
20150148111 | CLOSURE APPARATUS OF WIRELESS COMMUNICATION DEVICE - The present invention is a closure apparatus of a wireless communication device having a heat-dissipating structure. The closure apparatus comprises: a first housing; and a second housing manufactured to be mechanically separated from the first housing and coupled to the first housing with preset spacing. The second housing includes equipment pre-selected based on the degree of heat dissipation from among multiple pieces of equipment of the communication device. The first housing includes equipment other than the equipment of the second housing. | 05-28-2015 |
20150061874 | HELMET AND A METHOD FOR DEALING WITH AN ACCIDING USING THE HELMET - The present invention relates to a helmet and a method for dealing with an accident using the helmet, which the helmet includes: a helmet body part made of a resin having a semi-spherical space for receiving the head of a wearer; a light part arranged in the front of the helmet body part having LEDs mounted on a substrate to provide the wearer with lighting; a metallic heat radiator extending from the front of the helmet body part to the back thereof along the upper central line of the helmet body part and partially contacting the back of the substrate to discharge heat; a communication device part received in the helmet body part for dealing with communication and emergency circumstances; and a battery received in the helmet body part for supplying power to the communication part and light part. According to the present invention, the metallic heat radiator is integrated with the resinous helmet body part by injection molding of different materials, so that the heat generated from the LEDs of the light part is discharged upwards from the top of the helmet, thus preventing the wearer from being subjected to the discomfort caused by the heat generated from the LEDs. | 03-05-2015 |
20150029721 | LED LIGHTING MODULE AND LIGHTING DEVICE USING SAID MODULE - The present invention relates to an LED lighting module and to a lighting device using said module. The LED lighting module comprises: a body frame, the base of which has an accommodation groove; a substrate fixed at an inner installation surface of the accommodation groove of the body frame and having multiple LED packages mounted thereon; multiple heat-dissipating fins arranged on an upper surface and a side surface of the body frame and spaced apart from each other; and a fixing unit protruding from the upper surface of the body fame and having a base surface with a coupling hole for coupling the substrate by means of a bolt. The LED lighting module of the present invention is provided with the protruding fixing unit having an inner surface with the coupling hole for fixing the substrate to the body frame by means of a bolt, and therefore, the overall thickness of the body frame is reduced in order to reduce the weight of the module and improve heat-dissipating characteristics of the module. | 01-29-2015 |
20150029705 | EASILY EXPANDABLE INDOORS LED LIGHTING DEVICE - The present invention relates to an easily expandable indoors LED lighting device, comprising: a fixing bar which is installed on a ceiling; first and second electrode bars, which are provided on a rear surface of the fixing bar; a socket which is provided at the center of the fixing bar that is provided with the first and second electrode bars; and a bell-shaped reflective portion, which is coupled to the socket, for providing power from the first and second electrode bars to a substrate on the inside of which an LED is mounted. The present invention is lightweight, can be directly installed on the ceiling by coupling, and enables expanded installation of the lighting device that is modularized in accordance with the surface area of the ceiling, thereby providing the advantage of easy installation. | 01-29-2015 |
20140362593 | LIGHTING DEVICE ENABLING ARBITRARY DISTRIBITION OF LIGHT - The present invention relates to a lighting device enabling arbitrary distribution of light, which includes: a hollow receptacle having a cover to be opened or closed; a pivot part mounted in a fixing hole provided in the bottom of the receptacle so as to be tilted and pivoted; a light module part connected through an adjustment shaft to the pivot part, the light module part being tilted and pivoted by the pivot part so as to control the distribution of light; and a fixing part for adjusting the pivot part to be fixed or to be tilted and pivoted. The present invention enables a plurality of light modules to be separately adjusted to control the distribution of light, and provides fixing means for fixing the positions of the light modules thus adjusted, so that the distribution of light may be controlled regardless of the installed position of the lighting device, thereby preventing light from penetrating into surrounding buildings. | 12-11-2014 |
20140333500 | VARIABLE BEAM CONTROL ANTENNA FOR MOBILE COMMUNICATION SYSTEM - The present invention relates to a variable beam control antenna for a mobile communication system, the antenna comprising: a radome formed on the front surface at which a signal is emitted; multiple emitters vertically arranged in at least one row; a frame portion for supporting the radome and the multiple emitters; and a direction-changing module which rotates each of the multiple emitters vertically and horizontally with respect to a reference point in order to change the emission direction of the multiple emitters. | 11-13-2014 |
20140327499 | RADIO FREQUENCY FILTER HAVING CAVITY STRUCTURE - The present invention relates to a radio frequency filter having a cavity structure, comprising: a container which has a hollow inner portion and a cavity that is cut off from the outside, and a resonance element which is placed in the hollow inner portion of the container, wherein the container has a wrinkled structure for adjusting the intervals between a longitudinal front end surface of the resonance element and the inner surfaces of the container facing the longitudinal front end surface using external pressure. Thus, the invention can be further miniaturized and is lightweight, and the design of the invention enables frequency tuning without employing a coupling structure of a tuning screw and a fastening nut, thereby obtaining a convenient and simplified structure. | 11-06-2014 |
20140307437 | LED SURFACE LIGHT-EMITTING DEVICE FOR EASY SHIELDING AND MANUFACTURING METHOD THEREOF - The present invention relates to an LED surface light-emitting device for easy shielding, and a manufacturing method thereof, and includes: an integrated type rear-surface case part having an accommodation space portion open toward the front surface portion thereof, wherein a substrate equipped with LEDs is accommodated in the accommodation space portion; a diffusion panel which covers the open front surface portion of the rear-surface case part, and diffuses light of the LEDs to be a surface light source; and a front-surface window frame, the rear surface of which is coupled to the boundary of the front surface portion of the rear-surface case part, with the diffusion panel located on the rear-surface case part. The present invention is configured as a single body without openings to prevent dust and insects from coming therein, and thus can prevent brightness from decreasing according to use. | 10-16-2014 |
20140301077 | METHOD FOR ILLUMINATING SPACE - The present invention relates to a method for illuminating a space, and more specifically, to a method for illuminating a space using a plurality of LED illumination modules, wherein the plurality of LED illumination modules adjust a mutual distribution ratio between a vertical illuminance and a horizontal illuminance, which is greater than the vertical illumination, according to a limitation of a radiation angle at one point within the space having the constant volume. The present invention can increase the efficiency of illumination and can reduce electric energy by lowering the vertical illuminance compared to the horizontal illuminance. | 10-09-2014 |
20140287696 | ANTENNA SYSTEM OF MOBILE COMMUNICATION BASE STATION - The present invention is an antenna system of a mobile communication base station, comprising: a signal separation unit which is arranged within a radome of an antenna, and which separates a synthetic signal of a wireless signal transmitted from a main system of a base station through a feeder cable, a direct current power signal and a control signal having a preset format for controlling the antenna, in such a manner that the direct current power signal and the control signal are output by being separated from the wireless signal and the wireless signal is provided to an antenna unit; and equipment to be remotely controlled having a modem for receiving the direct current power signal and the control signal output from the signal separation unit and using the direct current power signal as an operating power and converting the control signal into a format which is preset to be internally recognizable in the radome of the antenna, the equipment to be remotely controlled performing an antenna control operation according to a control signal. | 09-25-2014 |
20140247594 | LED LIGHTING APPARATUS - The present invention relates to an LED lighting apparatus. The LED lighting apparatus includes: a power source housing provided with a power supply unit therein and having a plurality of connection parts disposed on a bottom surface thereof; a ring-shaped frame on which a connection frame coupled to the connection parts of the power source housing is disposed, with the ring-shaped frame accommodating a transmission line through which power from the power supply unit is supplied; and a plurality of lighting part housings coupled to a lower portion of the frame to receive the power through the transmission line, thereby applying the power to the accommodated LED to emit light. Thus, the lighting part housings of the LED lighting apparatus may be changed in quantity and position to vary light distribution and luminance. | 09-04-2014 |
20140247098 | RADIO FREQUENCY FILTER - A Radio Frequency (RF) filter configured by combining a hybrid coupler with a general filter, for having different characteristics from original characteristics of a general filter is provided, in which a coupler receives an input signal through a first port, divides the input signal, outputs the divided signals through second and third ports, combines signals received through the second and third ports according to phases of the signals, and outputs the combined signal through the first port or as an output signal of the RF filter through a fourth port, and a first filter unit has a first port connected to the second port of the coupler and a second port connected to the third port of the coupler, for having a predetermined frequency filtering characteristic. | 09-04-2014 |
20140218922 | LIGHTING METHOD FOR AN LED LIGHTING APPARATUS - The present invention relates to a lighting method for an LED lighting apparatus, in which e.g. an LED for illuminating an edge of a light distribution pattern far away from a street lamp has a relatively larger illumination angle and a smaller radiation angle, and an LED for illuminating the center of a light distribution pattern near the street lamp and an edge of a light distribution pattern adjacent to the street lamp has a relatively smaller illumination angle and a smaller radiation angle. Thus, each LED illuminates different areas of the road, thereby ensuring the uniformity of illumination of an overall light distribution pattern. | 08-07-2014 |
20140177227 | SPHERICAL LAMP WITH EASY HEAT DISSIPATION - A spherical lamp with easy heat dissipation comprises: a lower substrate and an upper substrate, in each of which a plurality of LEDs are embedded; a substrate support portion having a plate shape, to which the lower and upper substrates are coupled and fixed to lower and upper portions thereof, respectively; lower and upper covers, which are fixed to lower and upper portions of the substrate support portion, respectively, and each of which has a semi-spherical shape; a support portion, which is connected to an upper center portion of the substrate support portion and is exposed to the exterior through a center portion of the upper cover; and a heat dissipation plate which is formed on a rear surface of the heat dissipation plate and provided with a coupling portion into which an end of the support portion is inserted and fixed. | 06-26-2014 |
20140176347 | STREET LAMP FOR PROVIDING SAFE DRIVING INFORMATION AND SYSTEM FOR PROVIDING SAFE DRIVING INFORMATION USING STREET LAMP - A street lamp for providing the safe driving information comprises: a main lighting portion for lighting a road; a vehicle reception portion for receiving an accident or malfunction occurrence signal from a vehicle in an accident or which is malfunctioning; a control portion for generating accident or malfunction recognition signals that can be distinguished, in accordance with the reception of the accident or malfunction occurrence signal; and a vehicle transmitting portion for selectively transmitting the accident or malfunction occurrence signal to vehicles in front and behind the location of the accident or the malfunction. | 06-26-2014 |
20140152403 | RADIO FREQUENCY FILTER EMPLOYING NOTCH STRUCTURE - The present invention relates to a radio frequency filter employing a notch structure, wherein the notch structure is a dual notch structure which comprises: a C notch structure formed in a predetermined region at a partition between two cavities to be cross-coupled; and an L notch structure formed together with the C notch structure in a predetermined region at a partition between two cavities. | 06-05-2014 |
20140111987 | LED LIGHTING APPARATUS HAVING AN ADJUSTABLE LIGHT DISTRIBUTION - An LED lighting apparatus having adjustable light distribution comprises: a support panel on which a plurality of heat dissipation fins are disposed on a back surface thereof, the support panel providing a parallel front part which is not parallel to the ground; a board on which a plurality of LEDs are mounted, and being coupled to said front part of the support panel; and a reflection part fixed to the support panel so as to be disposed on the front surface of said substrate, and reflecting light emitted from said plurality of LEDs to provide a curved reflection surface which forms light distribution patterns on the ground. The light emission surface of the LED is not disposed parallel to the ground. The light emitted from the LED is distributed through the reflection part having a curved surface reflecting the light emitted from the LED toward the ground. | 04-24-2014 |
20140091883 | MULTI-MODE RESONANT FILTER - Various multi-mode resonant filters including a housing having a cavity, are provided. The multi-mode resonant filters include a Dielectric Resonant (DR) element received in the cavity of the housing, and a plurality of transmission lines for connecting a point on one of a first axis, a second axis, and a third axis with a point on another axis. The first axis, the second axis, and the third axis are orthogonal to each other with respect to a center of the DR element. | 04-03-2014 |
20130321105 | STRIPLINE CONNECTION APPARATUS - The present invention relates to a stripline connection apparatus for transmitting signals between at least one pair of striplines. The stripline connection apparatus comprises a coupling member arranged between the pair of striplines so as to transmit signals to each stripline via inductive coupling. The coupling member includes a conductor, both ends of which face the respective striplines, and a gap-maintaining means for maintaining a predetermined gap between the conductor and the striplines. | 12-05-2013 |
20130307743 | DUAL POLARIZATION ANTENNA FOR A MOBILE COMMUNICATION BASE STATION, AND MULTIBAND ANTENNA SYSTEM USING SAME - The present invention relates to a dual polarization antenna comprising a reflection plate, and a radiating module including first to fourth radiating elements having respective first to fourth radiating arms having respective bent portions. The bent portions of the first to fourth radiation arms are sequentially adjacent to each other, and sequentially form | 11-21-2013 |
20120146871 | BROADBAND DIPOLE ANTENNA - A broadband dipole antenna is provided, in which a radiator includes a plurality of radiation pattern units for transmitting and receiving a radio signal, the radiation pattern units have radiation patterns of resonators formed thereon, and a power supply and balun structure supports and supplies power to the radiator. Each of the plurality of radiation pattern units of the radiator has at least a dual radiation pattern structure having an inner radiation pattern and an outer radiation pattern. | 06-14-2012 |
20120118771 | COMMUNICATION BOX - A communication box includes a body having walls defining sides. One side of the box is open and the wall at the open side of the body has a thickness of 0.5 mm to 2.5 mm. A cover seals the open side of the body. In a communication box in which the body and the cover are coupled to each other using screws, the thickness of the walls where the screws are not present is reduced, making it possible to increase internal capacity of the communication box while maintaining the outer size. Thus, the weight of a communication part is reduced, internal space of the communication box is effectively utilized, and characteristics of the communication box are improved. | 05-17-2012 |
20120056692 | MULTI-LINE PHASE SHIFTER FOR VERTICAL BEAM TILT-CONTROLLED ANTENNA - A Multi-Line Phase Shifter (MLPS) for a vertical beam tilt-controlled antenna is provided, in which a housing is shaped into an elongated rectangular box, a fixed plate is attached on an inner bottom surface of the housing and has transmission lines printed thereon, the transmission lines forming part of a plurality of phase shifting patterns and a plurality of signal division patterns, for dividing an input signal and shifting phases of divided signals, and a mobile plate is installed within the housing, movably along a length direction at a position where the mobile plate contacts a surface of the fixed plate, and has transmission lines printed thereon, the transmission lines forming a remaining part of the plurality of phase shifting patterns for phase shifting by forming variable lines through coupling with the part of the plurality of phase shifting patterns. | 03-08-2012 |
20120033559 | METHOD FOR CONTROLLING TRANSMISSION/RECEPTION TIMING OF BASE STATION ANTENNA FOR TDD WIRELESS COMMUNICATIONS AND BASE STATION ANTENNA USING THE SAME - A method for controlling a transmission/reception timing of a BS antenna for TDD wireless communications is provided, in which a control signal and an RF signal are separated from a modulated signal received from a BTS, a TDD synchronization signal is monitored from the received modulated signal, a periodic RF signal is checked from downlink transmission and uplink reception RF signals, an error between the TDD synchronization signal and the periodic RF signal is calculated, and a transmission/reception switching control signal is output according to the error. | 02-09-2012 |
20110316650 | BAND STOP FILTER - The present invention relates to a band stop filter comprising: a resonating bar; a housing on the inside of which is formed a receiving space where the resonating bar is positioned, and which is made in a stepped form such that at least one part of an upper-end part is narrower than a lower-end part in terms of the internal width of the receiving space during the formation of the receiving space; a lower cover which has the resonating bar fitted thereto, is joined to the lower part of the housing and, when so joined, is assembled such that the resonating bar is inserted into the receiving space, and which forms the floor surface of the receiving space; and a hermetic-sealing cover which is provided within a recess pre-made in the housing in such a way as to couple with a resonator formed by the receiving space and the resonating bar on the inside of the receiving space, and is designed to hermetically seal the recess in the housing where a transmission line has been provided. | 12-29-2011 |
20110299299 | ANTENNA WITH LIGHTING FUNCTION FOR MOBILE COMMUNICATION SYSTEM - An antenna with a lighting function for a mobile communication system is provided. The antenna includes a radome for passing or spreading light through at least one specific part, and at least one light source for irradiating light to the radome. | 12-08-2011 |
20110198628 | MULTI-CHIP LED PACKAGE - A multichip light-emitting-diode (LED) package includes a printed circuit board (PCB) having a tapered via hole and a circuit interconnection line on a surface of the PCB. An inclined surface of each via hole is used as a reflection plate reflecting light emitted by an LED chip located in the via hole. Each LED chip is directly bonded to a metal base for radiating heat. Additional heat radiation structures and reflection plates are not required, thus simplifying the structure of and manufacture of the multichip LED package, reducing manufacturing costs. | 08-18-2011 |
20110193965 | System and Method for Providing Image Information Using Mobile Communication Base Station Antennas - A system for providing image information using mobile communication BS antennas is provided, in which each of a plurality of mobile communication BS antennas has a camera module for capturing a full area where the camera module is installed and transmits BS image information captured by the camera module to a remote control system, the remote control system has a BS image DB server and stores the BS image information received from the plurality of mobile communication BS antennas on a BS basis and on an antenna basis in the BS image DB server, and a service server receives the BS image information from the BS image DB server and provides the BS image information to a user terminal. | 08-11-2011 |
20110176462 | BASE STATION ANTENNA IN A MOBILE COMMUNICATION SYSTEM - A Base Station (BS) antenna in a mobile communication system is provided, in which a reflective plate has a frontal surface onto which radiation elements are attached, and at least one protector is attached onto the reflective plate, surrounding at least part of the reflective plate. | 07-21-2011 |
20110175784 | METHOD FOR INSTALLING RADIATOR ELEMENTS ARRANGED IN DIFFERENT PLANES AND ANTENNA THEREOF - A method for installing radiator elements arranged on different planes and an antenna having the radiator elements are provided, in which a first-position radiator element is placed on one plane, a second-position radiator element is placed on another plane, and power supply cables are connected to the first-position radiator element and the second-position radiator element. The power supply cables are designed to compensate for a phase difference between signals radiated in the air from the first-position radiator element and the second-position radiator element by a phase difference between signals propagated via the power supply cables. | 07-21-2011 |
20110175782 | DUAL-BAND DUAL-POLARIZED ANTENNA OF BASE STATION FOR MOBILE COMMUNICATION - Disclosed is a dual-band dual-polarized antenna of a base station for mobile communication, the dual-band dual-polarized antenna including: a reflection plate; one or more first radiating element modules formed on the reflection plate to transmit and receive two linear orthogonal polarized waves for a first frequency band, the one or more first radiating element modules including a plurality of dipoles installed in a general ‘X’ shape; and one or more second radiating element modules for a second frequency band, which are interleaved between the first radiating element modules on the reflection. | 07-21-2011 |
20110151932 | CONTROL SYSTEM FOR ANTENNA OF MOBILE COMMUNICATION BASE STATION AND IMAGE DATA OFFER SYSTEM AND METHOD TO USE THE CONTROL SYSTEM - A system for controlling a mobile communication antenna is provided, which includes a plurality of antenna systems each installed in a BS, and a remote control system for monitoring and controlling the plurality of antenna systems. In each of the antenna systems, an antenna module includes a radiation plate and a radiation device for transmitting and receiving radio signals for a mobile communication service, a sensor unit senses the inclination and horizontal rotation of the antenna module, a transceiver transmits data sensed by the sensor unit to the remote control system and receives a control signal from the remote control system, and a controller controls an operation of the antenna system according to the remote control signal received from the transceiver. In the remote control system, a BS monitoring information DB server accumulates the sensed data received from the plurality of antenna systems on a BS basis and an antenna system basis, and a remote control center outputs control signals to the antenna systems to monitor the antenna systems remotely. | 06-23-2011 |
20110141727 | LAMP FOR CAMERA-ATTACHABLE STREETLIGHT - A lamp for a camera-attachable streetlight is provided, which includes a camera-integrated bulb module. In the camera-integrated bulb module, there is a bulb portion, a camera module has a camera for capturing a predetermined area and a transceiver for transmitting data captured by the camera to an external server, a connector is inserted into a commercial socket, for receiving an external commercial power and has the same structure as a commercial connector inserted into a commercial socket, for receiving a commercial power, and a power distributor distributes the power received through the connector to the bulb portion and the camera module. | 06-16-2011 |
20110140803 | Radio Frequency Filter - A Radio Frequency (RF) filter configured by combining a hybrid coupler with a general filter, for having different characteristics from original characteristics of a general filter is provided, in which a coupler receives an input signal through a first port, divides the input signal, outputs the divided signals through second and third ports, combines signals received through the second and third ports according to phases of the signals, and outputs the combined signal through the first port or as an output signal of the RF filter through a fourth port, and a first filter unit has a first port connected to the second port of the coupler and a second port connected to the third port of the coupler, for having a predetermined frequency filtering characteristic. | 06-16-2011 |
20110128097 | DIELECTRIC RESONATOR IN RF FILTER AND ASSEMBLEY METHOD THEREFOR - A dielectric resonator in a radio frequency filter is provided, in which a dielectric resonance element is fixed at the center of a housing space formed by a cover and a housing, a guide groove is formed into a bottom of the housing, for allowing the dielectric resonance element to be inserted therein, a metal plate is interposed between the cover and the housing, and a dielectric fixing screw is engaged with the cover at a position corresponding to an upper end portion of the dielectric resonance element by screwing, for fixing the dielectric resonance element by pressing the upper end portion of the dielectric resonance element. | 06-02-2011 |
20110127851 | Selecting Structure for Device - Disclosed is a device selection structure for selecting one or more devices, comprising: a plurality of devices each having an input port and an output port; and a device module including a movement plate installed movably in conjunction with the plurality of devices, an input connector, and an output connector, wherein the input and output ports of the plurality of devices and the input and output connectors of the device module are installed so that during movement of the movement plate, the input and output ports of the plurality of devices are sequentially connected, at predetermined positions, to the input and output connectors of the device module. | 06-02-2011 |
20110105060 | Radio frequency transmitter and signal amplification method therefor - A Radio Frequency (RF) transmitter and a signal amplification method therefor are provided, in which a signal source generates a signal of a predetermined Intermediate Frequency (IF) band, a local oscillator generates a signal of a predetermined high frequency band as a carrier signal, a power amplifier amplifies the signal received from the local oscillator to a predetermined transmission level, and a parametric mixer module receives the signals from the signal source and the power amplifier and outputs the received signals as a radio signal for transmission. The signal output from the parametric mixer module is transmitted as the radio signal without additional amplification. | 05-05-2011 |
20110069644 | Apparatus for Sharing a Wireless Communication Base Station - A wireless communication base station shares one antenna between a main system and a subsystem. A signal combiner/divider is connected to each of the transmission/reception signal lines of a main and a subsystem duplexer and combines signals according to their phases and divides other signals. A filter is provided in the signal paths between the combiners/dividers. | 03-24-2011 |
20110006856 | MULTI-MODE RESONANT FILTER - Various multi-mode resonant filters including a housing having a cavity, are provided. The multi-mode resonant filters include a Dielectric Resonant (DR) element received in the cavity of the housing, and a plurality of transmission lines for connecting a point on one of a first axis, a second axis, and a third axis with a point on another axis. The first axis, the second axis, and the third axis are orthogonal to each other with respect to a center of the DR element. | 01-13-2011 |
20100297937 | Mobile Communication Repeating Method in Moving Object and Repeater Thereof - A repeater installed in a moving object is provided, in which a link antenna module has a plurality of link antennas steered to predetermined directions, for wirelessly communicating with a Base Transceiver Station (BTS), a link antenna path setting module selects at least one of the plurality of link antennas of the link antenna module and connects a path between the selected link antenna and a rear end, a service antenna module has at least one service antenna installed within the moving object, for wirelessly communicating with Mobile Stations (MSs) within the moving object, a relay signal processing module is connected to the link antenna module through the link antenna path setting module and processes transmission and reception relay signals between the link antenna module and the service antenna module, a movement information module measures current movement information about the moving object and provides the current movement information, a received signal measuring module measures a received signal of the link antenna module and providing current propagation environment information, and an antenna control module detects a current movement state and a current propagation environment based on the information received from the received signal measuring module and the movement information module, stores and/or updates the information in an internal propagation environment information storage, and controls the link antenna path setting module to select a link antenna that receives the best signal from a serving BTS at each location according to the stored information. | 11-25-2010 |
20100231469 | Antenna Device for Mobile Communication System - An antenna device for a mobile communication system is provided, in which a post has a selected external appearance. An antenna end is formed at an upper portion of the post for installing antenna parts, and a support end is formed at a lower portion of the post for fixing the antenna device to the ground. At least part of an external body of the antenna end is formed of a material that transmits transmission and received radio signals and a ground support member is formed under the support end to make an external body of the support end stand erect on the ground. The external appearance of the antenna device may take the form of a conventional utility, lamp, or sign post or pole. | 09-16-2010 |
20100135192 | Array Antenna System in Base Station - An array antenna system in a BS, in which a horizontal-beam-radiation-pattern-forming module has a horizontal-beam-radiation-pattern-former to form a horizontal beam radiation pattern for transmission/reception signals, dividing signals received from input/output ports at one end, shifting the phases of the divided signals complementarily, combining the phase-shifted signals from the different input/output ports at the one end, outputting the combined signals to input/output ports at the other end, and outputting signals received from the input/output ports at the other end by a reverse operation to the input/output ports at the one end, receives/outputs a plurality of transmission/reception signals from/to a BTS via the input/output ports at the one end of the horizontal-beam-radiation-pattern-former, and receives/outputs a plurality of transmission/reception signals from/to a plurality of antennas via the input/output ports at the other end of the horizontal-beam-radiation-pattern-former, and a plurality of vertical-beam-radiation-pattern-forming modules are installed on an antenna basis to form a vertical beam radiation pattern for the transmission/reception signals, each for receiving a transmission signal from the horizontal-beam-radiation-pattern-forming module, dividing the transmission signal, providing the divided signal to antenna elements, filtering and amplifying signals received from the antenna elements according to a predetermined reception band, combining the amplified signals, and providing the combined signal to the horizontal-beam-radiation-pattern-forming module. | 06-03-2010 |
20100074217 | Method and Apparatus for Managing Sector of Base Station in Mobile Telecommunication Systems - Disclosed is a method for operating sectors of a base station in a mobile telecommunication system. For this, the method includes the steps of: outputting, at a prescribed time period equal to T1, data, including alpha sector data, beta sector data, and gamma sector data, which is to be transmitted to a mobile station, in sequence and by sectors; dividing a frequency in a scheme of time division at a time period which equals either tα, tβ or tγ and which corresponds to the data length by the sector of data which is output in the outputting data, and carrying out a frequency assignment in sequence and by the sector. Accordingly, only relevant data is transmitted to a sector assigned the frequency, and a traffic variation of each sector can be met. | 03-25-2010 |
20100052824 | Radio Frequency Filter - A radio frequency filter comprising: housing body having input/output connectors and containing space which is divided into spaces by means of diaphragm; at least one resonator rod arranged in the housing; housing cover coupled to the housing body; wherein the housing body and the housing cover are coupled to each other by laser welding. The radio frequency filter according to the present invention can reduce PIMD due to reduce Contact Nonlinearity, and inhibit to erode away because the laser welding method dissolve different metallic materials each other and take a convalent bond, and reduce its manufacturing process time and cost because it is unnecessary drilling a hole and fastening a screw to fasten the housing and the housing cover each other and can simplify its manufacturing process and raise productivity because only irradiate laser beam on irradiated area of the housing cover. | 03-04-2010 |
20100019860 | Switchable Combiner/Divider With Multiple Inputs/Outputs - A switchable combiner/divider with multiple inputs/outputs is provided. The switchable combiner/divider with multiple inputs/outputs includes multiple input ports for receiving multiple incoming signals, multiple output ports, a switching part for alternately connecting the multiple input ports to output ports as a circulating configuration, and a controller for providing switching control signals to the switching part. | 01-28-2010 |
20100008267 | Radio Frequency Switch - Disclosed is a radio frequency (RF) switch including: a circulator having first to third nodes, which are connected to first to third ports, respectively; and a slot line pattern unit installed in a connection line between the third node of the circulator and the third port so as to carry out signal transmission or interception, wherein the slot line pattern unit includes a switching circuit, which is installed at a predetermined location so as to transmit or intercept a signal by maintaining or short-circuiting a gap of a slot line corresponding to the installed location according to an external switching control signal. | 01-14-2010 |
20090315639 | DPDT RF Switch and TMA Using the Same - Disclosed is a DPDT RF switch. The DPDT RF switch includes: first to fourth transmission lines for forming first to fourth ports, respectively; and first to fourth slot line pattern sections. The first slot line pattern section includes: a first slot line; and a first switching device for blocking signal transfer by short-circuiting a gap of a slot line. The third slot line pattern section includes: a third slot line; and a third switching device for blocking signal transfer by short-circuiting a gap of a slot line. The second slot line pattern section includes: a first loop-shaped slot line; a second slot line; and a second switching device for blocking signal transfer by short-circuiting a gap of a slot line. The fourth slot line pattern section includes: a second loop-shaped slot line; a fourth slot line; and a fourth switching device for blocking signal transfer by short-circuiting a gap of a slot line. | 12-24-2009 |
20090278759 | Dual-Band Dual-Polarized Base Station Antenna for Mobile Communication - Disclosed is a dual-band dual-polarized antenna for a mobile communication base station, which includes: a reflection plate; a first radiation device module for transmitting and receiving two linear orthogonal polarizations for a first frequency band, the first radiation device module generally having a square shape, the first radiation device module including a plurality of dipoles arranged to form the square shape, each of the dipoles substantially having a transverse side and a vertical side; and a second radiation device module for a second frequency band which is arranged within the square shape of the first radiation device module, and includes a plurality of dipoles generally arranged to form a cross-shape. | 11-12-2009 |
20090206908 | Radio Frequency Switch - An RF switch includes first, second and third transmission lines for forming ports, respectively, and first, second and third slot line pattern portions connected to one another, for transferring signals to the first, second and third transmission lines, respectively. The first slot line pattern portion has a slot line pattern for transferring a signal received from the first transmission line to a connection point with the other slot line pattern portions, and a switching circuit for shorting the gap of a corresponding slot line and thus blocking the signal transfer. The second slot line pattern portion includes a loop slot line formed by a first and a second half loop slot line, a second sub-slot line for transferring a signal received from the connection point to the second transmission line through the loop slot line, and a switching circuit for shorting the gap of a corresponding slot line. | 08-20-2009 |
20090195329 | VARIABLE PHASE SHIFTER - Disclosed is a variable phase shifter The variable phase shifter includes a housing; a fixed board unit fixedly installed inside the housing, equipped with an input microstrip line with a via hole for receiving an input signal on one face thereof, and equipped with at least one circular arc-shaped output microstrip line outside the input microstrip line; and a rotating board unit rotatably installed inside the housing while being in contact with the one face of the fixed board unit, equipped with a transmission microstrip line on a face coming in contact with the one face of the fixed board unit, and for providing at least one output signal by making coupling even during rotation thereof. | 08-06-2009 |
20090184780 | VARIABLE PHASE SHIFTER - Disclosed is a variable phase shifter, the variable phase shifter including: a fixed board which is fixedly provided in a housing, and consisting of a dielectric board, and consisting of a dielectric board, having a second transfer stripline having at least one arc-shaped output micro stripline on one surface; a rotating board rotatably provided within the housing while coming in contact with the one surface of the fixed board, and consisting of a dielectric board, having a second transfer stripline coupled to the arc-shaped output micro stripline on a surface where the rotating board comes in contact with the one surface of the fixed board even when the rotating board rotates; wherein both the sides of at least one output micro stripline of the fixed board are connected to an output port, and the other surface of the fixed board includes an input micro stripline, so that the other surface of the fixed board is electrically connected and receives an input signal. | 07-23-2009 |
20090184155 | PCB Mounting Method - Provided is a method for mounting a Printed Circuit Board (PCB). The method includes providing a solder cream on a predetermined region of a bottom surface of the PCB except for a region requiring insulation, mounting the PCB on a mounting region of a housing on which the PCB is to be mounted, and fixedly coupling the PCB to the housing by melting and hardening the solder cream provided on the bottom surface of the PCB. | 07-23-2009 |
20090153271 | VARIABLE RADIO FREQUENCY BAND FILTER - A variable radio frequency band filter capable of varying the resonance frequency band comprises a housing having a support; a number of resonator rods arranged along the longitudinal direction of the housing; at least one tuning rod positioned on top of the resonator rods; a tuning support extending through the respective tuning rods along the longitudinal direction of the housing and adapted to slide on top of the respective resonator rods to vary the position of the tuning rods; and a frequency variation unit positioned on a lateral surface of the housing. The frequency variation unit being coupled to an end of the tuning support and adapted to vary the position of the tuning rods, as the tuning support is slid, according to the frequency band. | 06-18-2009 |
20090069053 | Apparatus for Using a Wireless Communication Base Station in Common - In the wireless communication base station sharing apparatus, a first signal combiner/distributor is connected to a main system duplexer through a first port, distributes a signal received through the first port to second and third ports, combines the signals received through the second and third ports according to the phases of the signals, and provides the combined signal through the first port or a fourth port. A second signal combiner/distributor is connected to a subsystem duplexer through a fifth port and the antenna through an eighth port, distributes a signal received through the fifth port to sixth and seventh ports, combines the signals received through the sixth and seventh ports according to the phases of the signals, and provides the combined signal through the fifth or eighth port. Variable filters are provided in signal paths between the first and second signal combiner/distributors. | 03-12-2009 |