| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/04/2011 | CN101453194B Non-filter circuit construction for D type power amplifier and processing method thereof |
| 05/04/2011 | CN101404478B Method and apparatus for improving efficiency of class E power amplifier |
| 05/03/2011 | US7936842 Automatic bit rate control circuit |
| 05/03/2011 | US7936427 Optical sensor for detecting peripheral light and liquid crystal display device using the same |
| 05/03/2011 | US7936220 Techniques for improving amplifier linearity |
| 05/03/2011 | US7936219 Power amplifier bias circuit |
| 05/03/2011 | US7936218 Shared-current electronic system |
| 05/03/2011 | US7936217 High-linearity complementary amplifier |
| 05/03/2011 | US7936216 True current limiting |
| 05/03/2011 | US7936213 Doherty amplifier and signal amplification system having the same, method for amplifying signal |
| 05/03/2011 | US7936212 Progressive power generating amplifiers |
| 05/03/2011 | US7936211 Controlling the performance of a thermionic tube |
| 05/03/2011 | US7935990 RF power amplifier and method for packaging the same |
| 04/28/2011 | WO2011049997A1 Circuit and method for reducing noise in class d amplifiers |
| 04/28/2011 | WO2011048893A1 Combiner for doherty amplifier |
| 04/28/2011 | WO2011047492A1 System for detecting high-frequency, narrow-band signals |
| 04/28/2011 | WO2011009066A3 Speaker system and amplifier |
| 04/28/2011 | WO2009109808A3 Baseband-derived rf digital predistortion |
| 04/28/2011 | WO2009031042A3 N-way doherty distributed power amplifier |
| 04/28/2011 | US20110098013 High-frequency amplifier and radio communication apparatus |
| 04/28/2011 | US20110096240 High dynamic range low-power differential input stage |
| 04/28/2011 | US20110096186 Fully-differential amplifier, photoelectric conversion apparatus including fully-differential amplifier, and image-pickup system |
| 04/28/2011 | US20110095829 Headphone amplifier circuit |
| 04/28/2011 | US20110095828 Multi-Mode High Efficiency Linear Power Amplifier |
| 04/28/2011 | US20110095825 Error Amplifier |
| 04/28/2011 | US20110095824 Rf power amplifier integrated circuit and unit cell |
| 04/28/2011 | US20110095823 Incremental gain amplifier |
| 04/28/2011 | US20110095822 Variable-gain low noise amplifier |
| 04/28/2011 | US20110095818 Method and apparatus for accurately measuring currents using on chip sense resistors |
| 04/28/2011 | US20110095784 Apparatus and method for providing multi-mode clock signals |
| 04/28/2011 | DE102009049304A1 Device for converting charge into pulse length for use in semiconductor photodetector of e.g. gamma camera in nuclear medicine, has converting unit converting discharge time of capacitor still reaching residual charging |
| 04/28/2011 | CA2815315A1 Circuit and method for reducing noise in class d audio amplifiers |
| 04/27/2011 | EP2315351A1 Doherty power amplifiers |
| 04/27/2011 | EP2313972A1 Method and apparatus for josephson distributed output amplifier |
| 04/27/2011 | EP2313971A2 Method of achieving high selectivity in receiver rf front-ends |
| 04/27/2011 | EP2313970A1 Dual-loop feedback amplifying circuit |
| 04/27/2011 | EP2313929A1 Avalanche photodiode circuits |
| 04/27/2011 | CN201813350U Low-voltage rail-to-rail operation amplifying circuit |
| 04/27/2011 | CN201813349U Family cinema audio power amplifier |
| 04/27/2011 | CN1998079B Module integration integrated circuits |
| 04/27/2011 | CN102037642A Predictive feedback compensation for PWM switching amplifiers |
| 04/27/2011 | CN102037641A Amplifier with improved linearization |
| 04/27/2011 | CN102035486A Complementary input circular folded transconductance operational amplifier with preamplifier |
| 04/27/2011 | CN102035485A High-gain linear amplifier capable of realizing stable output |
| 04/27/2011 | CN102035484A Differential amplifier |
| 04/27/2011 | CN102035483A Operational amplifier |
| 04/27/2011 | CN102035482A EMI (Electro-Magnetic Interference) suppression circuit of D type power amplifier |
| 04/27/2011 | CN102035481A Bias circuit |
| 04/27/2011 | CN102035480A Power supply method and device and system for radio frequency power amplifier |
| 04/27/2011 | CN102035058A Filter, transmitter-receiver, and amplifying circuit |
| 04/27/2011 | CN102034823A Layout and bonding pad floor planning for power transistor with favorable SPU (Short-to-Plus Unpowered) and STOG (Short-to-Open circuit Grounded) performance |
| 04/27/2011 | CN101626232B High speed phase splitting circuit |
| 04/27/2011 | CN101577526B Radio-frequency push-pull power amplifier |
| 04/27/2011 | CN101114810B Amplifier stage, operational amplifier and method for amplifying a signal |
| 04/26/2011 | US7932783 Resonant operating mode for a transistor |
| 04/26/2011 | US7932782 Average power efficiency enhancement and linearity improvement of microwave power amplifiers |
| 04/26/2011 | US7932781 Multi-planar solid state amplifier |
| 04/26/2011 | US7932780 Method for implementation and parameter settings of a voltage enhancement circuit for amplifiers as an integrated circuit (IC) |
| 04/26/2011 | US7932779 D-class amplifier |
| 04/26/2011 | US7932778 Power efficient amplifier |
| 04/26/2011 | US7932777 Switching amplifier for driving reactive loads |
| 04/21/2011 | WO2011046031A1 Power amplifier and method for operating same |
| 04/21/2011 | WO2011045832A1 Differential driver circuit and testing apparatus using same |
| 04/21/2011 | WO2011045193A1 Rf power amplifier with spectrally grouped nanosized switches |
| 04/21/2011 | WO2011025048A3 Sensor device |
| 04/21/2011 | WO2011022549A3 Digital tunable inter-stage matching circuit |
| 04/21/2011 | US20110090014 Switched active bias control and power-on sequencing circuit for an amplifier |
| 04/21/2011 | US20110090013 Field-effect transistor amplifier |
| 04/21/2011 | US20110090012 Circuit and method for radio frequency amplifier |
| 04/21/2011 | US20110090011 Power amplifier |
| 04/20/2011 | EP2312751A1 Differential amplifier with common-mode feedback |
| 04/20/2011 | EP2312750A1 A method for transmission of signals from a transmitting device to a receiving device comprising an amplifying unit, a transmitting device and a receiving device therefor |
| 04/20/2011 | EP2312749A1 RF power amplifier with spectrally grouped nanosized switches |
| 04/20/2011 | EP2312748A1 System for detecting high-frequency narrowband signals |
| 04/20/2011 | EP2312746A1 Final three-way power synthesizing amplifier circuit for mobile communication base station system power amplifier |
| 04/20/2011 | EP2311186A1 Radio frequency (rf) envelope pulsing using phase switching of switch-mode power amplifiers |
| 04/20/2011 | EP2311185A1 A pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 04/20/2011 | EP2311184A2 Low-noise high efficiency bias generation circuits and method |
| 04/20/2011 | EP2044687B1 A method for controlling a linear amplifier and power amplifier arrangement |
| 04/20/2011 | EP1946440B1 A transconductance stage arrangement |
| 04/20/2011 | EP1366562B1 Amplitude and phase modulator |
| 04/20/2011 | CN102026076A Solar electret transducer and low-energy consumption electret transducer |
| 04/20/2011 | CN102025334A Db-linear process-independent variable gain amplifier |
| 04/20/2011 | CN102025331A 无线通信系统接收器以及放大器 The wireless communication system receiver, and the amplifier |
| 04/20/2011 | CN102025330A Class-d amplifier |
| 04/20/2011 | CN102025329A Arrangement and combination type multi-line power amplification system |
| 04/20/2011 | CN102025328A Radio frequency power signal sampling and amplifying circuit |
| 04/20/2011 | CN102025327A Amplifier apparatus and predistortion control method |
| 04/20/2011 | CN102025326A Digital self-zero calibration circuit applied for operational amplifier |
| 04/20/2011 | CN102025324A System and method for improving switching time precision of time division duplex terminal power amplifier |
| 04/20/2011 | CN102023737A Reading device for current type touch panel |
| 04/20/2011 | CN101588163B Difference high-pass filtering circuit based on symmetric active induction |
| 04/20/2011 | CN101515788B Vehicle power amplifying circuit |
| 04/20/2011 | CN101471048B TFT-LCD driving circuit and LCD device |
| 04/20/2011 | CN101371434B Systems and methods for improving performance in a digital amplifier by adding an ultrasonic signal to an input audio signal |
| 04/19/2011 | US7929637 Method and apparatus for digital amplitude and phase modulation |
| 04/19/2011 | US7928815 Amplifier |
| 04/19/2011 | US7928804 Power amplifier |
| 04/19/2011 | US7928803 Amplifying circuit |
| 04/19/2011 | US7928802 RF amplification device |