| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 05/27/2010 | US20100127774 Distortion correction device and method for power amplifier |
| 05/27/2010 | US20100127772 Feedback amplifier and audio system thererof |
| 05/26/2010 | EP2190114A1 Local broadcasting system |
| 05/26/2010 | EP2188890A2 Broadband power amplifier |
| 05/26/2010 | EP2119000B1 Chopper-stabilized instrumentation amplifier for impedance measurement |
| 05/26/2010 | EP1341303B1 High-frequency amplifier |
| 05/26/2010 | CN201490976U Fully differential in-phase parallel amplifying device for acquiring bioelectric signal |
| 05/26/2010 | CN201490975U Digital power amplifier |
| 05/26/2010 | CN201490973U Overload protective device of power amplifier |
| 05/26/2010 | CN201490972U Infrared signal precise amplifying circuit |
| 05/26/2010 | CN201490971U Non-stop output final circuit of audio power amplifier |
| 05/26/2010 | CN201490970U Power amplifier structure |
| 05/26/2010 | CN201490969U Bilateral amplifying circuit triggered by network card |
| 05/26/2010 | CN1871798B Device, system and method for data communication |
| 05/26/2010 | CN1797941B Pulse width modulation amplifier |
| 05/26/2010 | CN1714505B Method, system and device for providing linear decibel gain control in radio frequency driver amplifier |
| 05/26/2010 | CN1714500B Composite power amplifier and its drive method, wireless terminal |
| 05/26/2010 | CN1656673B Fast cascaded class AB output stage with FET devices |
| 05/26/2010 | CN1628412B Variable impedance load for a variable gain radio frequency amplifier |
| 05/26/2010 | CN1628411B Amplifier circuit, gyrator circuit, filter device and method for amplifying signal |
| 05/26/2010 | CN1625834B Output circuit for a semiconductor amplifier element |
| 05/26/2010 | CN1623232B RF amplifier and related module and method |
| 05/26/2010 | CN1578119B Non-linear compensation circuit, transmission apparatus and non-linear compensation method |
| 05/26/2010 | CN1574535B Electronic device, and circuit and method for protecting the same |
| 05/26/2010 | CN1516336B 音频功率放大器 Audio Power Amplifier |
| 05/26/2010 | CN101714854A Operational amplifier circuit and display apparatus |
| 05/26/2010 | CN101714852A Double-frequency radio-frequency power amplifier circuit chip |
| 05/26/2010 | CN101277094B Operation amplifier capable of compensating migration voltage |
| 05/26/2010 | CN101127534B Simulated pre-distortion circuit and method |
| 05/26/2010 | CN101106356B Power amplification circuit and its initialization method and power amplification method |
| 05/26/2010 | CN101091306B Single-ended to differential transducer circuit |
| 05/26/2010 | CN101036289B Analog predistorter and its regulation method and method for compensating signal change |
| 05/25/2010 | US7724837 Efficient modulation of RF signals |
| 05/25/2010 | US7724104 Constant gain amplifier system with positive and negative feedback |
| 05/25/2010 | US7724084 System and method for controlling radio frequency transmissions from an electronic device |
| 05/25/2010 | US7724081 Amplifier front-end with low-noise level shift |
| 05/25/2010 | US7724080 Chopper stabilized amplifier |
| 05/25/2010 | US7724079 Programmable logic enabled dynamic offset cancellation |
| 05/25/2010 | US7724063 Integrator-based common-mode stabilization technique for pseudo-differential switched-capacitor circuits |
| 05/20/2010 | WO2010056646A1 An asymmetric multilevel outphasing architecture for rf amplifiers |
| 05/20/2010 | WO2010056416A1 Electronic devices with calibrated radio frequency communications circuitry |
| 05/20/2010 | WO2010056236A1 Charge amplifiers with dc stabilization |
| 05/20/2010 | WO2010055161A1 Generation of pre-distortion coefficients |
| 05/20/2010 | WO2010054680A1 Method of detecting an operating condition of an electric stepper motor |
| 05/20/2010 | US20100123519 Apparatus and method for controlling distortions of amplifier |
| 05/20/2010 | DE102009023083A1 Verstärkerschaltung mit verbesserter Temperaturkompensation Amplifier circuit with improved temperature compensation |
| 05/19/2010 | EP2186191A1 Method of using integrated power amplifier |
| 05/19/2010 | CN201479081U gain-adjustable low-noise amplifier |
| 05/19/2010 | CN201479080U Impedance conversion amplifier |
| 05/19/2010 | CN201479079U Short-circuit protection device for power amplifier |
| 05/19/2010 | CN101710887A Method and system for processing digital predistortion |
| 05/19/2010 | CN101710824A Class D amplifier |
| 05/19/2010 | CN101207365B Gain bootstrap operational amplifier |
| 05/19/2010 | CN101151798B Amplifier apparatus |
| 05/19/2010 | CN101147319B Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method |
| 05/19/2010 | CN101111992B Polar coordinate modulation circuit, polar coordinate modulation method, integrated circuit, and radio transmission apparatus |
| 05/19/2010 | CN101022267B Distortion compensating apparatus and method |
| 05/18/2010 | US7720447 Radiofrequency (RF) and/or microwave power amplification device and corresponding radiocommunication terminal |
| 05/18/2010 | US7720171 Coefficient estimation method and apparatus |
| 05/18/2010 | US7719363 Method and apparatus for output amplifier protection |
| 05/18/2010 | US7719355 Method and apparatus for providing a Cartesian training waveform |
| 05/18/2010 | US7719354 Dynamic biasing system for an amplifier |
| 05/18/2010 | US7719352 Active circuits with isolation switches |
| 05/18/2010 | US7719351 Autozeroing current feedback instrumentation amplifier |
| 05/18/2010 | US7719243 Soft-start system and method for power converter |
| 05/18/2010 | CA2351327C Impedance matching networks for non-linear circuits |
| 05/14/2010 | WO2010054100A2 Radio frequency amplification circuit utilizing variable voltage generator |
| 05/14/2010 | WO2010053791A1 Amplifier with improved esd protection circuitry |
| 05/14/2010 | WO2010053372A1 Biased power amplifier |
| 05/14/2010 | WO2010053134A1 Adder, and power combiner, quadrature modulator, quadrature demodulator, power amplifier, transmitter and wireless communicator using same |
| 05/14/2010 | WO2010052901A1 Variable frequency amplifier |
| 05/14/2010 | WO2010052825A1 Power amplifier and amplifying method employed therein |
| 05/14/2010 | WO2010052668A1 Variable duty cycle generation for out-phasing and pwm power amplifiers |
| 05/14/2010 | WO2010052247A1 Improved power supply stage |
| 05/14/2010 | WO2010052065A1 High frequency differential amplifier and transceiver circuit |
| 05/14/2010 | WO2010025027A3 Method and apparatus for adjusting load impedance of a distributed amplifier |
| 05/14/2010 | WO2010008188A3 Combination-type amplifier with multiple power sources |
| 05/14/2010 | WO2009088813A9 Multi-linearity mode lna having a deboost current path |
| 05/13/2010 | US20100120385 Radio frequency amplification circuit utilizing variable voltage generator |
| 05/13/2010 | US20100117736 Line driver capable of automatic adjustment of output impedance |
| 05/13/2010 | US20100117731 Thermal regulation of a class-D audio amplifier |
| 05/13/2010 | US20100117729 Distortion Compensation Apparatus And Method |
| 05/12/2010 | EP2184850A1 Biased power amplifier |
| 05/12/2010 | CN201467117U Temperature compensation device and mobile communication terminal |
| 05/12/2010 | CN201467075U Physiotherapy instrument power amplifier |
| 05/12/2010 | CN201467074U Dynamic balance class A audio power amplifier |
| 05/12/2010 | CN1909363B 半导体功率器件和rf信号放大器 The semiconductor power device and the rf signal amplifier |
| 05/12/2010 | CN1874181B Band selection type feed forward amplifier |
| 05/12/2010 | CN1855697B Radio frequency power amplifier |
| 05/12/2010 | CN1835390B Low noise amplifier |
| 05/12/2010 | CN1832335B CMOS superwide band low noise amplifier |
| 05/12/2010 | CN1607722B Digital predistortion circuit and implementation method thereof |
| 05/12/2010 | CN1592086B 放大器电路 The amplifier circuit |
| 05/12/2010 | CN1442959B Power servo ring, radio frequency signal amplifying circuit and radio frequency signal emitter |
| 05/12/2010 | CN101707476A LDMOS protection circuit |
| 05/12/2010 | CN101414804B Power amplifier and nonlinearity correction method, apparatus thereof |
| 05/12/2010 | CN101178371B Electronic gun power supply for reflected high energy electron diffraction instrument |
| 05/12/2010 | CN101128976B Non-linear processing method and equipment of signal |
| 05/11/2010 | US7715811 Integrated transceiver with envelope tracking |
| 05/11/2010 | US7714647 Multiple output power mode amplifier |