| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 07/11/2012 | EP2475095A1 Doherty amplifier |
| 07/11/2012 | EP2475094A1 Doherty amplifier |
| 07/11/2012 | EP2171839B1 Electronic device and a method of biasing a mos transistor in an integrated circuit |
| 07/11/2012 | EP2153520B1 Buffer driver |
| 07/11/2012 | CN202334448U Audio operation amplifying circuit structure and audio output circuit structure |
| 07/11/2012 | CN202334447U 前置均衡放大电路 Pre-equalizer amplifier |
| 07/11/2012 | CN202334446U Bipolar high-voltage power amplifier |
| 07/11/2012 | CN202334445U 一种三相脉冲放大器 A three-phase pulse amplifier |
| 07/11/2012 | CN202334444U 可调增益音频功率放大电路 Adjustable gain audio power amplifier |
| 07/11/2012 | CN202334443U 一种可以直接耦合的放大器 One kind may be directly coupled amplifier |
| 07/11/2012 | CN202334439U 矿用密封放大器 Mine sealing amplifier |
| 07/11/2012 | CN102577110A Push-pull low-noise amplifier with area-efficient implementation |
| 07/11/2012 | CN102577109A Transistor audio power amplifier output stage accelerated circuit |
| 07/11/2012 | CN102577108A RF power amplifier with spectrally grouped nanosized switches |
| 07/11/2012 | CN102577107A Papr (peak-to-average power ratio) determining apparatus and communication apparatus |
| 07/11/2012 | CN102577106A Adjustable circuit architecture |
| 07/11/2012 | CN102577104A Combiner for doherty amplifier |
| 07/11/2012 | CN102571008A Very high efficiency flexible travelling wave amplifier |
| 07/11/2012 | CN102571007A Operation amplifier with minimum potential selection function |
| 07/11/2012 | CN102571006A Bias current control method for operational amplifier and driving circuit |
| 07/11/2012 | CN102571005A Rail-to-rail operational amplifier |
| 07/11/2012 | CN102571004A Operational amplifier |
| 07/11/2012 | CN102571003A Bias circuit of electroabsorption modulated laser |
| 07/11/2012 | CN102571002A Automatic-biasing structural operation amplifier applied to band gap reference source |
| 07/11/2012 | CN102571001A Floating power source instrument amplifier |
| 07/11/2012 | CN102571000A Amplifier and amplifier control method |
| 07/11/2012 | CN102570999A Variable gain self-adaptive bias power amplifier based on common-mode feedback |
| 07/11/2012 | CN102570998A High-frequency power amplifier device |
| 07/11/2012 | CN102570997A Power amplification circuit |
| 07/11/2012 | CN102570996A 一体化功率放大器 Integrated Power Amplifier |
| 07/11/2012 | CN102570995A Guide exchange type synchronous bias voltage power amplifier |
| 07/11/2012 | CN102570994A Radio frequency power amplifier |
| 07/11/2012 | CN102570993A Small-sized pulse power amplifier |
| 07/11/2012 | CN102570992A Radiofrequency amplifier |
| 07/11/2012 | CN102570991A Output matching circuit of radio frequency (RF) power amplifier |
| 07/11/2012 | CN102570989A Operational amplifier |
| 07/11/2012 | CN102570985A Power amplifying circuit for powerline multicarrier communication systems |
| 07/11/2012 | CN101465619B Method and apparatus for restraining D-genus power amplifier noise and D-genus power amplifier with noise suppression |
| 07/11/2012 | CN101192864B RF power amplifying device and wireless communication terminal device for carrying the same |
| 07/10/2012 | US8218976 Optical receiver with trans-impedance responding in bit-by-bit to input signal |
| 07/10/2012 | US8217735 Harmonic suppression device |
| 07/10/2012 | US8217722 Power amplifier |
| 07/10/2012 | US8217721 Slew rate enhancing circuit |
| 07/10/2012 | US8217720 Variable-gain low noise amplifier |
| 07/10/2012 | US8217719 Variable gain RF amplifier |
| 07/10/2012 | US8217718 Highly efficient class-D amplifier |
| 07/10/2012 | US8217579 Device and method for controlling DC bias of RF discharge system |
| 07/10/2012 | US8217328 Low noise pixel readout circuit with high conversion gain |
| 07/10/2012 | CA2464132C Method and system for dsl power saving |
| 07/05/2012 | WO2012091662A1 Method for forming an electric signal representing a sound and a device therefor |
| 07/05/2012 | WO2012090547A1 Distortion compensation circuit |
| 07/05/2012 | WO2012089810A1 Operational amplifier with latching state suppression |
| 07/05/2012 | US20120169425 Dc-dc converter switching transistor current measurement technique |
| 07/05/2012 | US20120169423 Radio frequency amplifier circuit |
| 07/05/2012 | US20120169422 Amplifier with Non-Linear Current Mirror |
| 07/05/2012 | US20120169421 Audio amplifying circuit with improved noise performance |
| 07/05/2012 | US20120169420 Circuit and method for amplifying a digital signal |
| 07/05/2012 | US20120169417 Current generator |
| 07/05/2012 | CA2821047A1 Method for forming an electric signal representing a sound and a device therefor |
| 07/04/2012 | EP2472723A1 Amplifier with non-linear current mirror |
| 07/04/2012 | EP2472722A2 Amplifier with configurable DC-coupled or AC-coupled output |
| 07/04/2012 | EP2472721A2 Amplifier with configurable DC-coupled or AC-coupled output |
| 07/04/2012 | EP2472720A2 Power-efficient spectrum shaping for a magnetic lnik |
| 07/04/2012 | EP2472719A1 Doherty amplifier |
| 07/04/2012 | EP2471177A1 Method for using an amplifier |
| 07/04/2012 | EP2471176A2 Sensor device |
| 07/04/2012 | EP2471175A1 Linearization circuits and methods for power amplification |
| 07/04/2012 | EP2471174A1 Dual rf channel linearizer channel amplification device, and telecommunication satellite comprising said device |
| 07/04/2012 | EP2471173A2 System and method for amplifying a signal using multiple amplification stages sharing a common bias current |
| 07/04/2012 | EP2178160B1 Antenna device on the top of the car and antenna amplifier thereof |
| 07/04/2012 | CN202309631U Two-path error amplifier |
| 07/04/2012 | CN202309630U 一种宽频带射频放大器 A wideband RF Amplifier |
| 07/04/2012 | CN202309629U 功率放大器音色补偿电路 Voice amplifier compensation circuit |
| 07/04/2012 | CN202309628U 数字隔离式高压直流功率放大模块及功率放大器 Digital isolated high voltage DC power amplifier module and power amplifier |
| 07/04/2012 | CN202309627U 机车专用宽电压一体化集成功率放大器 Locomotive for wide voltage integrated power amplifier integration |
| 07/04/2012 | CN202309626U 一种通过射频路径供电的天线放大器 One kind of path through the RF antenna amplifier power |
| 07/04/2012 | CN202309625U 一种数字音频天线放大器 A digital audio antenna amplifier |
| 07/04/2012 | CN202309623U 单极性高压线性放大器 Unipolar high-voltage amplifiers |
| 07/04/2012 | CN1987363B Method for correcting an analogue amplifier output signal, amplifier module and measurement device |
| 07/04/2012 | CN102549920A Common mode voltage control |
| 07/04/2012 | CN102549919A Protection circuit for power amplifier |
| 07/04/2012 | CN102549918A Dual RF channel linearizer channel amplification device, and telecommunication satellite comprising said device |
| 07/04/2012 | CN102549916A Dual use transistor |
| 07/04/2012 | CN102549915A Doherty amplifier |
| 07/04/2012 | CN102545850A PWM (pulse-width modulation) comparator and class-D amplifier |
| 07/04/2012 | CN102545810A Radio frequency power amplifier for battery of wireless communication system |
| 07/04/2012 | CN102545809A Changeable gain amplifying device and wireless communication device |
| 07/04/2012 | CN102545808A Error amplifier, controller and primary side feedback control AC ( alternating current)/ DC (direct current) converter |
| 07/04/2012 | CN102545807A Image signal output circuit |
| 07/04/2012 | CN102545806A Differential amplifier |
| 07/04/2012 | CN102545805A Operational amplifier |
| 07/04/2012 | CN102545804A Class-D amplifier circuit |
| 07/04/2012 | CN102545803A Exchange-guide type Hi-Fi (high fidelity) power amplifier |
| 07/04/2012 | CN102545802A Power tube complementary power amplifier |
| 07/04/2012 | CN102545801A Transmitting device |
| 07/04/2012 | CN102545800A Signal amplifying circuit and method thereof |
| 07/04/2012 | CN102545799A Adjustable amplification circuit |
| 07/04/2012 | CN102545798A High-precision adjustable power amplifier |
| 07/04/2012 | CN102545797A Communication transmission device with high-frequency power amplifier |
| 07/04/2012 | CN102545795A Feed-forward power amplifier on basis of current detection self-adaption method |