Patent application number | Description | Published |
20100074875 | COMPOSITION CONTAINING HUMAN UMBILICAL CORD BLOOD-DERIVED MESENCHYMAL STEM CELL FOR INDUCING DIFFERENTIATION AND PROLIFERATION OF NEURAL PRECURSOR CELLS OR NEURAL STEM CELLS TO NEURAL CELLS - A use of a composition comprising umbilical cord blood-derived mesenchymal stem cells for inducing differentiation and proliferation of neural precursor cells or neural stem cells to neural cells is provided, the composition being effective for the treatment of nerve injury diseases. | 03-25-2010 |
20100143261 | COMPOSITION FOR THE DIAGNOSIS, PREVENTION OR TREATMENT OF DISEASES RELATED TO CELLS EXPRESSING IL-8 OR GRO-ALPHA, COMPRISING UCB-MSCS - Provided is a gene therapy composition for transferring one of a therapeutical gene, a maker gene, or a mixture thereof to a cell that expresses interleukin-8(IL-8) or GRO-α and induces tropism of mesenchymal stem cells isolated from umbilical cord blood and/or the mesenchymal stem cells expanded from said mesenchymal stem cells (UCB-MSCs), wherein the cell-treating composition includes UCB-MSCs. Provided is a composition for treating disease related to a cell expressing IL-8 or GRO-α, that is, a brain tumor in gene therapy, by using UCB-MSCs. Provided is a composition or kit for diagnosing brain tumors, preventing brain tumors, treating brain tumors, or monitoring brain tumor treatment progression by using UCB-MSCs. | 06-10-2010 |
20110262393 | COMPOSITION COMPRISING MESENCHYMAL STEM CELLS OR CULTURE SOLUTION OF MESENCHYMAL STEM CELLS FOR THE PREVENTION OR TREATMENT OF NEURAL DISEASES - Provided are a pharmaceutical composition for prevention and treatment of a neural disease including at least one selected from the group consisting of mesenchymal stem cells (MSCs), a culture solution of the MSCs, activin A, PF4, decorin, galectin 3, GDF15, glypican 3, MFRP, ICAM5, IGFBP7, PDGF-AA, SPARCL1, thrombospondin-1, WISP1, progranulin, IL-4, a factor inducing expression thereof, and any combination thereof, and a method therefor. | 10-27-2011 |
20120196809 | USE OF ICAM-1 FOR PREVENTION OR TREATMENT OF NEUROLOGICAL DISEASES - The present invention relates to a pharmaceutical composition for the prevention or treatment of neurological disorders, comprising an ICAM-1 (intercellular adhesion molecule-1) protein, or a fragment or a variant thereof as an active ingredient, which can increase the expression of neprilysin to remove amyloid-beta (Aβ), a cause of dementia, and is thus useful in preventing or treating a neurological disease including Alzheimer's disease. | 08-02-2012 |
20130189189 | COMPOSITION FOR THE DIAGNOSIS, PREVENTION OR TREATMENT OF DISEASES RELATED TO CELLS EXPRESSING IL-8 OR GRO-ALPHA, COMPRISING UCB-MSCs - Provided is a gene therapy composition for transferring one of a therapeutical gene, a maker gene, or a mixture thereof to a cell that expresses interleukin-8(IL-8) or GRO-α and induces tropism of mesenchymal stem cells isolated from umbilical cord blood and/or the mesenchymal stem cells expanded from said mesenchymal stem cells (UCB-MSCs), wherein the cell-treating composition includes UCB-MSCs. Provided is a composition for treating disease related to a cell expressing IL-8 or GRO-α, that is, a brain tumor in gene therapy, by using UCB-MSCs. Provided is a composition or kit for diagnosing brain tumors, preventing brain tumors, treating brain tumors, or monitoring brain tumor treatment progression by using UCB-MSCs. | 07-25-2013 |
20130330306 | COMPOSITION CONTAINING HUMAN UMBILICAL CORD BLOOD-DERIVED MESENCHYMAL STEM CELL FOR INDUCING DIFFERENTIATION AND PROLIFERATION OF NEURAL PRECURSOR CELLS OR NEURAL STEM CELLS TO NEURAL CELLS - A use of a composition comprising umbilical cord blood-derived mesenchymal stem cells for inducing differentiation and proliferation of neural precursor cells or neural stem cells to neural cells is provided, the composition being effective for the treatment of nerve injury diseases. | 12-12-2013 |
Patent application number | Description | Published |
20080248960 | MICROFLUIDIC ARRAY SYSTEM FOR BIOLOGICAL, CHEMICAL, AND BIOCHEMICAL ASSESSMENTS - The system and method of the present application is a microfluidic array system for biological, chemical and biochemical assessments including a microfluidic chip for reaction assays, wherein the microfluidic chip includes a control layer and a fluidic layer, wherein the control layer is pressurized through pneumatic or hydraulic means in order to control the flow of the reagents in the fluidic layer. The system and method of the present application further includes a method of fabricating such a microfluidic chip, and further a method for operating the same. Lastly, the system and method of the present application further includes a system for operating and analyzing the microfluidic array including a pressure source, a fluidic source, a biochip reader, and a processor configured to control the same. | 10-09-2008 |
20100311611 | SYSTEMS FOR AND METHODS OF CHARACTERIZING REACTIONS - An automated and computerized system for characterizing kinetic activities is disclosed. The system includes an optical unit with a controller chip. The controller chip has multiple reaction cells for simultaneously reacting samples of the catalyst under a range of reaction conditions and for optically monitoring the kinetic activity within each of the reaction cells: The system also preferably includes a temperature controller in thermal contact with the controller chip and an actuation device coupled to the controller chip for injecting and mixing samples of the catalyst with reagents into each of the reaction cells to form a product. | 12-09-2010 |
20110056575 | PROGRAMMABLE FLUIDIC DROPLET GENERATION - A programmable fluidic device for generating droplets with resolutions of micrometer in size and milliseconds in generation timing is provided. The programmable fluidic device has a valve forming a droplet cutter, which contains a fluid deflectable membrane capable of controlling the flow of a dispensing fluid from a fluidic dispensing channel. The programmable fluidic device is able to perform temporal control over the droplet generation independent from the size control. | 03-10-2011 |
20130164770 | SYSTEM AND METHODS OF LOG-SCALE CONCENTRATION GRADIENTS - Devices and methods use an integrated microfluidic system that has the capability of realizing a wide range of accurate dilutions in a logarithmic way through semi-direct dilution of samples inside a chip. The device for dose response analysis is able to contain a first fluid source on a microfluidic chip, wherein the first fluid source comprises a drug, a second fluid source on the microfluidic chip, a mixing area on the microfluidic chip fluidically coupling with the first and the second fluidic source, and a detection area coupling with the mixing area for drug information detection using a detection system. | 06-27-2013 |
Patent application number | Description | Published |
20110111610 | CONNECTOR FOR USE IN VEHICLE - The present invention provides a connector for use in a vehicle, the connector including a male connector, a female connector and a connector cover mounted on the circumferential surface of the female connector thereby providing secure connection and removing/reducing noise of the vehicle. More specifically, the female connector includes a housing, a projection formed to project on top of the housing, an operating lever horizontally disposed over the housing in the forward and backward direction to perform a seesaw motion, and a locking projection formed at the front bottom of the operating lever. On the other hand, the male connector is configured to be inserted into the female connector and connected to the female connector by the locking projection. Furthermore, the female connector is double locked and the connector cover is molded with ferrite powder to remove or reduce noise of the vehicle. | 05-12-2011 |
20110126811 | IGNITION COIL OF ENGINE - The present invention features an ignition coil of an engine, in which a small condenser is directly installed to an LV pin of the ignition coil, thus effectively removing noise, and dissipating heat from the ignition coil to an outside, in addition to preventing the inflow of water. | 06-02-2011 |
20110132338 | IGNITION COIL FOR AN ENGINE - The present invention features an ignition coil for an engine, in which a small-sized condenser is directly installed in an LV pin (low voltage pin) of the ignition coil and efficiently removes noises, is disclosed. In preferred embodiments, the ignition coil includes an outer casing defining the appearance of the ignition coil, a first spool inserted in the outer casing and having a second spool therein, an LV pin installed in an upper portion of the first spool, and a condenser installed in the LV pin. | 06-09-2011 |
Patent application number | Description | Published |
20130152324 | Connector Device For Coupling Wiper Arm - A connector device for coupling a wiper arm and a wiper blade includes a coupling body, a first support portion provided on an upper surface of the coupling body and extending from the coupling body in a form of a cantilever and for applying an elastic restoration force to the wiper arm, a second support portion provided for supporting the wiper arm in a thicknesswise direction of the wiper arm to prevent the wiper arm from moving in the thicknesswise direction, and a third support portion for preventing the wiper arm from moving in a lengthwise direction of the wiper arm, wherein the second support portion is in a form of a hole with closed upper and lower sides and open front and rear sides. | 06-20-2013 |
20130333149 | Wiper Device Having Improved Vibration Prevention of Wiper Strip - A wiper device including: a yoke for supporting a wiper strip; an auxiliary lever including a coupling protrusion coupled to a coupling hole prepared in the yoke and formed of synthetic resin; and a main lever including an assembly protrusion coupled to an assembly hole prepared in the auxiliary lever and formed of the synthetic resin, wherein the auxiliary lever includes: a first vibration prevention portion protrusively formed to contact an upper surface of the yoke on a cross section taken along a width direction of the auxiliary lever in a position where the coupling hole is disposed; and a second vibration prevention portion in which an outer circumference surface of the coupling protrusion is formed in a tapered form so that the coupling protrusion coupled to the coupling hole is fit in a direction in which the coupling protrusion is coupled to the coupling hole. | 12-19-2013 |
20140201938 | Wiper Blade Apparatus Including Fool-Proof Assembly Structure - A wiper blade apparatus, having a main lever which is formed of synthetic resin, includes a rotation shaft that is disposed at a center of the main lever, and formed to connect both sidewalls of the main lever; and a connector that is rotatably coupled to a rotation shaft, and formed to be detachable from the rotation shaft, wherein a first fool-proof assembly unit is formed at the rotation shaft, and restricts a range of a rotation angle of the connector that prevents misassembly of the connector; and a second fool-proof assembly unit is formed on the coupling unit of the connector and, in correspondence with the first fool-proof assembly unit, restricts a range of a rotation angle of the connector. | 07-24-2014 |
Patent application number | Description | Published |
20130154287 | CRASH BOX FOR A VEHICLE - Disclosed is the outer support member and the inner support member each have a vertical wall and upper and lower horizontal walls. The vertical walls of the outer support member and inner support member are formed on the outer surfaces of the respective support members. The inner edges of the upper and lower horizontal walls are inclined from the rear portions thereof toward front center portions thereof. Thus, the performance of the crash box of the present invention may satisfy the requirements for both an offset test and a barrier test, reduce the weight of the bumper beam assembly to thereby reduce costs, and improve the performance and fuel efficiency of the vehicle. | 06-20-2013 |
20140054907 | BUMPER BEAM ASSEMBLY SYSTEM - Provided is a bumper beam assembly system. The A bumper beam assembly system includes a bumper beam and a stay connecting the bumper beam to a vehicle, wherein the stay is replaceably coupled to both sides of the bumper beam to occupy a corner portion of the bumper beam. | 02-27-2014 |
20150137539 | BUMPER BEAM ASSEMBLY SYSTEM - A bumper beam assembly system includes a bumper beam and a stay connecting the bumper beam to a vehicle, wherein the stay is replaceably coupled to both sides of the bumper beam to occupy a corner portion of the bumper beam. The bucket structure includes a frame assembly part that is coupled to a frame, a first sidewall disposed on one side of the frame assembly part to constitute the corner portion of the bumper beam, a second sidewall disposed on the other side of the frame, and a bumper beam assembly part extending from the frame assembly part, the first sidewall, and the second sidewall in a flange shape and coupled to the bumper beam. | 05-21-2015 |
20150145313 | HYBRID SEAT FRAME FOR VEHICLE - The present invention relates to a hybrid seat frame for a vehicle and provides a hybrid seat frame for a vehicle including a main frame formed of glass fiber and a reinforced frame formed of carbon fiber to secure stiffness in a direction perpendicular to the longitudinal direction and torsional stiffness and to reduce its weight, thereby improving fuel efficiency of the vehicle. | 05-28-2015 |
Patent application number | Description | Published |
20120276479 | POLYESTER RESIN AND TONER INCLUDING SAME - Disclosed herein is a toner for use in an electronic photograph-duplicating process or in an electrostatic printing process, and a polyester resin included in the toner as a binder. The polyester resin comprises lactic acids (D or L-lactic acids) or lactides (D or L-lactides) which are derivative compounds thereof, and dianhydrohexitols which are bio-derived sugar derivatives. | 11-01-2012 |
20130072642 | BLEND OF POLYLACTIC ACID RESIN AND COPOLYESTER RESIN, AND MOLDED PRODUCT USING SAME - A blend of polylactic acid resin and copolyester resin and a molded article using the same having superior impact resistance and heat resistance are disclosed. The blend of polylactic acid resin and copolyester resin includes: 5 to 95 weight % of polylactic acid resin; and 5 to 95 weight % of copolyester resin which is a copolymerization product of an acid component including terephthalic acid and a diol component including 5 to 99 mol % of 1,4-cyclohexanedimethanol and 1 to 60 mol % of isosorbide(bio monomer), and has a repeated structure of an acid moiety derived from the acid component and a diol moiety derived from the diol component. | 03-21-2013 |
20140288241 | POLYLACTIC ACID RESIN AND COPOLYMER POLYESTER RESIN BLEND, AND MOLDED PRODUCT USING SAME - A blend of polylactic acid resin and copolyester resin, which has excellent impact resistance and heat resistance, and a molded article manufactured using the same are disclosed. The blend of polylactic acid resin and copolyester resin, comprises 5 to 94 wt % of a polylactic acid resin; 3 to 92 wt % of a copolyester resin comprising a dicarboxylic acid component, which contains a terephthalic acid residue, and a diol component which contains 3 to 99 mol % of a cyclohexanedimethanol residue and 1 to 60 mol % of an isosorbide residue; and 3-30 wt % of a compatibilizer containing at least one reactive functional group selected from the group consisting of glycidyl, maleic anhydride, epoxy, isocyanate, amino, carboxylic acid and oxazoline groups, and mixtures thereof. | 09-25-2014 |
Patent application number | Description | Published |
20080211945 | Image sensor with extended dynamic range - An image sensor includes a first sub-pixel, a second sub-pixel, and an image processor. The first sub-pixel generates a first image signal with a first sensitivity, and the second sub-pixel generates a second image signal with a second sensitivity less than the first sensitivity. The image signal processor adds a change in the second image signal from a saturation level to the first image signal to generate a final image signal when the first sub-pixel is saturated. | 09-04-2008 |
20100224588 | METHODS OF FORMING METAL-INSULATOR-METAL (MIM) CAPACITORS WITH PASSIVATION LAYERS ON DIELECTRIC LAYERS - Methods of forming a dielectric layer of a MIM capacitor can include forming a passivation layer on a dielectric layer of a MIM capacitor to separate the dielectric layer from direct contact with an overlying photo-resist pattern. Related capacitor structures are also disclosed. | 09-09-2010 |
20110163362 | Methods of fabricating image sensors and image sensors fabricated thereby - A method of fabricating an image sensor may include providing a substrate including light-receiving and non-light-receiving regions; forming a plurality of gates on the non-light-receiving region; ion-implanting a first-conductivity-type dopant into the light-receiving region to form a first dopant region of a pinned photodiode; primarily ion-implanting a second-conductivity-type dopant, different from the first-conductivity-type dopant, into an entire surface of the substrate, using the gates as a first mask; forming spacers on both side walls of the gates; and secondarily ion-implanting the second-conductivity-type dopant into the entire surface of the substrate, using the plurality of gates including the spacers as a second mask, to complete a second dopant region of the pinned photodiode. An image sensor may include the substrate; a transfer gate formed on the non-light-receiving region; a first dopant region in the light-receiving region; and a second dopant region formed on a surface of the light-receiving region. | 07-07-2011 |
20110204468 | Image sensor and method of manufacturing the same - Example embodiments disclose an image sensor capable of preventing or reducing image lag and a method of manufacturing the same. Example methods may include forming a gate insulating film and a gate conductive film doped with a first-conductive-type dopant on a semiconductor substrate; forming a transfer gate pattern by patterning the gate insulating film and the gate conductive film; and fabricating a transfer gate electrode by forming a first-conductive-type photodiode in the semiconductor substrate adjacent to one region of the transfer gate pattern, by forming a second-conductive-type photodiode on the first-conductive-type photodiode, and by forming a first-conductive-type floating diffusion region in the semiconductor substrate adjacent to the other region of the transfer gate pattern. | 08-25-2011 |
Patent application number | Description | Published |
20090021506 | PLASMA DISPLAY DEVICE AND DRIVING METHOD THEREOF - A plasma display device and a driving method is provided. An inverse gamma corrector generates a first video signal by mapping an input video signal to an inverse gamma curve, and an address APC unit determines an address power consumption level of the first video signal. When the address power consumption level is high, the address APC unit outputs a gamma gain to the inverse gamma corrector to generate a second inverse gamma curve by multiplying the inverse gamma curve by the gamma gain. and A second video signal is generated by mapping the input video signal to the second inverse gamma curve. When the address power consumption level of the second video signal is low, a controller of the plasma display device generates address data and a sustain pulse. This way, the address power consumption level of the displayed image can be reduced. | 01-22-2009 |
20090040208 | Plasma display and driving method thereof - In a plasma display, a drain of a first transistor is connected to a scan electrode, and a source of the first transistor is connected to a power source supplying a first voltage. First and the second resistors are connected in series with the scan electrode and the power source. A scan electrode driver turns on the first transistor during a reset period to decrease a voltage of the scan electrode. A scan electrode driver senses the voltage of the electrode from a voltage divided by first and second resistors connected in series between the electrode and the power source. Upon the voltage of the scan electrode becoming a second voltage which is higher than the first voltage, the scan electrode driver turns off the first transistor to maintain the voltage of the scan electrode at the second voltage. In an address period, a scan electrode driver supplies the first voltage to the scan electrode of a light emitting cell. At least one resistor of the first and second resistors is a variable resistor in which resistance varies as the temperature of the Plasma Display Panel (PDP) varies, such that the plasma display can perform steady operation. | 02-12-2009 |
20090122088 | PLASMA DISPLAY DEVICE AND DRIVING METHOD THEREOF - A plasma display device in which a single frame of an inputted video signal is divided into a plurality of subfields to display gray levels according to a combination of the subfields. The highest gray level among the gray levels of an image of a single frame is detected by using the inputted single frame of video signal. When the highest gray level is lower than a first gray level, a first number of subfields among the plurality of subfields are set with the same weight value. When the highest gray level is lower than a second gray level that is higher than the first gray level, a second number of subfields that is smaller than the first number, among the plurality of subfields, are set with the same weight value to display the gray levels of the single frame. | 05-14-2009 |
Patent application number | Description | Published |
20090106503 | Method, device, and system for preventing refresh starvation in shared memory bank - A multi-port memory device includes a refresh register and a refresh controller for preventing refresh starvation in a shared memory unit of the memory device. The memory device further includes a plurality of ports sharing access to the shared memory unit. The refresh register stores information regarding at least one refresh command. The refresh controller determines whether to activate an internal refresh operation at a transition in port authority according to such information stored in the refresh register. | 04-23-2009 |
20130007563 | SEMICONDUCTOR MEMORY DEVICE HAVING ERROR CORRECTION FUNCTION AND MEMORY SYSTEM INCLUDING THE SAME - The device may include a check bit generator, a memory cell array, an error calculator, and an error corrector. The check bit generator may generate check bits based on input data. The memory cell array may store combined data including the input data and the check bits. The error calculator may be configured to generate syndrome bits based on first data and the check bits received from the memory cell array, calculate an error based on the syndrome bits, and generate error data. The error corrector may be configured to correct the first data based on the error data, and generate second data. The check bits and syndrome bits may include normal check bits, additional check bits, normal syndrome bits, and additional syndrome bits, where the additional check bits are not be normal check bits, and the additional syndrome bits are not normal syndrome bits. | 01-03-2013 |
20130275830 | MEMORY DEVICE, MEMORY SYSTEM, AND METHOD OF OPERATING THE SAME - A memory device, a memory system, and a method of operating the same. The memory device includes a memory cell array including a plurality of memory cells and a write command determination unit (WCDU) that determines whether a write command input to the memory device is (to be) accompanied a masking signal. The WCDU produces a first control signal if the input write command is (to be) accompanied by a masking signal. A data masking unit combines a portion of read data read from the memory cell array with a corresponding portion of input write data corresponding to the write command and generates modulation data in response to the first control signal. An error correction code (ECC) engine generates parity of the modulation data. | 10-17-2013 |
20160034348 | SEMICONDUCTOR MEMORY DEVICE HAVING SELECTIVE ECC FUNCTION - A semiconductor memory device having a selective error correction code (ECC) function is provided. The semiconductor memory device divides a memory cell array into blocks according to data retention characteristics of memory cells. A block in which there are a plurality of fail cells generated at a refresh rate of a refresh cycle that is longer than a refresh cycle defined by the standards of the semiconductor device is selected from among the divided blocks. The selected block repairs the fail cells by performing the ECC function. The other blocks repair the fail cells by using redundancy cells. Accordingly, a refresh operation is performed on the memory cells of the memory cell array at the refresh rate of the refresh cycle that is longer than the refresh cycle by the standards of the semiconductor device. | 02-04-2016 |
Patent application number | Description | Published |
20100215124 | APPARATUS AND OPERATING METHOD OF DIGITAL RF RECEIVER IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and an operating method of a digital Radio Frequency receiver in a wireless communication system are provided. The digital RF receiver includes a digital signal processor for outputting information of a receive frequency band, and an Analog-Digital Converter for filtering a signal of the receive frequency band from an RF analog signal input and converting the filtered signal to a digital signal. | 08-26-2010 |
20100227577 | APPARATUS AND METHOD FOR IMPROVING LINEARITY OF TRANSMITTER - Improvement of linearity of a transmitter is provided, by a transmission method that includes, when receiving a transmit signal, generating, at a modulation signal generator, a modulation signal modulated from the transmit signal, an average output level and an amplitude with respect to the modulation signal; receiving, at a Read Only Memory (ROM), the average output level and generating a peak amplitude; and generating, at an amplitude shaper, a gain value using the peak amplitude and the amplitude and generating magnitude information by adding an offset value. | 09-09-2010 |
20110175792 | APPARATUS FOR MULTIPLE ANTENNAS IN WIRELESS COMMUNICATION SYSTEM - An apparatus for multiple antennas having a low coupling coefficient in a wide frequency bandwidth in a wireless communication system is provided. To obtain the low coupling coefficient in the wide frequency bandwidth by minimizing interference between antennas which are close to each other, without an additional device, in the wireless communication system, the apparatus includes a transceiver and a line for decreasing a coupling coefficient. The transmitter includes a first antenna and a second antenna for transmitting and receiving signals over a radio channel and the line is indirectly connected the first antenna and the second antenna using a physically disconnected line. | 07-21-2011 |
20110291751 | PHASE MATCHING BAND-PASS FILTER USING EXPONENTIAL FUNCTION APPROXIMATION - A The present invention relates to a phase matching band-pass filter using exponential function approximation, comprising an inductor including a parasitic resistor, a first device wherein a first amplifier is connected in a feedback mode, a capacitor including a parasitic resistor, a plurality of filter devices including a second device that is connected with a second amplifier in a feedback mode, and a coupling capacitor that connects the plurality of filter devices; the impedance of the first device has an increasing exponential function relation with a frequency, impedance of the second device has a decreasing exponential function relation with the frequency, and the first device is connected with the second device in parallel. According to the phase matching band-pass filter using exponential function approximation of this invention, conventional inductors and capacitors can be used 0 without modification or use of negative resistance, resulting in a high-performance phase matching band-pass filter. In addition, when a device with impedance characteristics that approximate an exponential function is used, the degree of frequency selection 0 becomes higher than that of conventional filters resulting in filters having high Q values and stability, such as channel selection filters. | 12-01-2011 |
20120139808 | ANTENNA FOR GLOBAL POSITIONING SYSTEM - A Global Positioning System (GPS) antenna apparatus in a wireless communication device is provided. The GPS antenna apparatus includes a GPS antenna radiator and at least one blocking layer. The GPS antenna radiator receives a GPS signal. The at least one blocking layer is installed proximate to the GPS antenna radiator so as to block an external noise introduced to the GPS antenna radiator. | 06-07-2012 |
20130163696 | APPARATUS FOR COMPENSATING FOR DISTORTION OF TRANSMITTER ARRAY IN RADIO COMMUNICATION SYSTEM AND METHOD FOR CONTROLLING THE SAME - Provided is a method in which a Digital Pre-Distorter (DPD) performs digital pre-distortion on a received In-phase (I) signal, a received Quadrature-phase (Q) signal, a feedback I signal, and a feedback Q signal; a mixer mixes a signal output from the DPD with a frequency signal output from an oscillator; each of n phase shifters phase-shifts a signal output from the mixer according to a preset beamforming pattern; each of n Power Amplifiers (PAs) amplifies a signal output from an associated phase shifter according to a gain, the PAs connected to the associated phase shifter on a one-to-one basis; each of n envelope detectors detects an envelope signal from a signal output from an associated PA, the envelope detector connected to the associated PA on a one-to-one basis; and a control unit determines whether the n PAs operate normally, using the envelope signals output from the n envelope detectors. | 06-27-2013 |
20130165059 | BEAMFORMING APPARATUS AND METHOD IN MOBILE COMMUNICATION SYSTEM - Provided is a beamforming apparatus in a receiver in a mobile communication system. The beamforming apparatus includes a Local Oscillator (LO) signal generator for generating an LO signal; a phase shifter for generating a predetermined number of phase-shifted LO signals with respect to the generated LO signal; a switching network for mapping the phase-shifted LO signals to RF signals received via a plurality of receive paths; and a mixer for mixing the RF signals with the mapped LO signals to down-convert a frequency of the RF signals. | 06-27-2013 |