| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/26/2011 | DE102009041937A1 Amplifier for electrostatic discharge protection circuit, has current limiting device reducing output current at output to current value based on determined condition of input signal relative to determined condition of output |
| 05/25/2011 | EP2324568A1 Arrangement for calibrating the quiescent operating point of a push-pull amplifier |
| 05/25/2011 | EP2127073B1 Chopper-stabilized instrumentation amplifier for wireless telemetry |
| 05/25/2011 | EP1859530B1 Receiver having a gain-controllable input amplifier |
| 05/25/2011 | CN201846315U Digital variable gain amplifier |
| 05/25/2011 | CN201846314U Millimeter-wave monolithic integrated low-noise amplifier |
| 05/25/2011 | CN201846313U Millimeter wave monolithic integrated power amplifier |
| 05/25/2011 | CN201846312U Broad frequency power amplifier |
| 05/25/2011 | CN201846311U Power amplifier |
| 05/25/2011 | CN201846310U Impulse power amplifier |
| 05/25/2011 | CN201846309U Limited bootstrapped grid bias controller of high-power C-class amplifier of radio frequency transmitter |
| 05/25/2011 | CN201846308U Multi-closed-loop cooperative amplifier circuit |
| 05/25/2011 | CN1883111B Amplifier provided with a regulation system controlled by the output stage |
| 05/25/2011 | CN102077462A Pre-distortion method and device to enhance power utility of power amplifiers in wireless digital communication applications |
| 05/25/2011 | CN102077256A 烟传感器 Smoke sensor |
| 05/25/2011 | CN102075833A Method, circuit and device for realizing 2.1 sound track power amplification by using double-channel circuit |
| 05/25/2011 | CN102075154A Low-power consumption programmable gain amplifier device |
| 05/25/2011 | CN102075152A Linear source follower |
| 05/25/2011 | CN102075151A Complementary circulation folding gain bootstrapping operational amplifier circuit with preamplifier |
| 05/25/2011 | CN102075150A Photoelectric signal preconditioning amplifying circuit of auto iris for digital gastrointestinal machine |
| 05/25/2011 | CN102075149A Power envelope tracing power supply of multi-phase interleaving radio-frequency power amplifier |
| 05/25/2011 | CN102075147A Radio-frequency power amplifier method and feed-forward power amplifier |
| 05/25/2011 | CN102075146A G class audio frequency amplification system and method |
| 05/25/2011 | CN101449458B Amplifying circuit and method thereof |
| 05/25/2011 | CN101420208B Variable gain amplifier including series-coupled cascode amplifiers |
| 05/25/2011 | CN101416382B Method and equipment for reducing frequency memory effect of RF power amplifier |
| 05/25/2011 | CN101262226B Delta sigma-type AD converter, class-D amplifier, and DC-DC converter |
| 05/24/2011 | US7949322 Frequency selective amplifier with wide-band impedance and noise matching |
| 05/24/2011 | US7948324 Power efficient multistage amplifier and design method |
| 05/24/2011 | US7948323 Linear transimpedance amplifier with wide dynamic range for high rate applications |
| 05/24/2011 | US7948322 Balun amplifier |
| 05/24/2011 | US7948321 FET bias circuit |
| 05/24/2011 | US7948320 Synchronized temperature protection for class-AB amplifiers |
| 05/24/2011 | US7948319 Current-mirroring systems and methods |
| 05/24/2011 | US7948317 Power amplifier integrated circuit with compensation mechanism for temperature and output power |
| 05/24/2011 | US7948316 Low bias current amplifier |
| 05/24/2011 | US7948315 Low noise binary-coded gain amplifier and method for time-gain compensation in medical ultrasound imaging |
| 05/24/2011 | US7948314 Tunable linear operational transconductance amplifier |
| 05/24/2011 | US7948313 Class D amplifier circuit |
| 05/24/2011 | US7948312 Multi-bit class-D power amplifier system |
| 05/24/2011 | US7948309 DC-offset cancelled programmable gain array for low-voltage wireless LAN system and method using the same |
| 05/24/2011 | US7948308 Filter compensation for switching amplifiers |
| 05/24/2011 | US7947940 Photoelectric current integrating circuit including a current passing circuit |
| 05/19/2011 | WO2011060323A1 Cascaded amplifiers with transformer-based bypass mode |
| 05/19/2011 | WO2011058843A1 Amplifier, distortion compensation circuit, and distortion compensation method |
| 05/19/2011 | WO2011058803A1 Distortion compensation circuit |
| 05/19/2011 | WO2011058709A1 Transmission circuit and communication device |
| 05/19/2011 | WO2011058197A1 An adaptive digital pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 05/19/2011 | WO2011031379A3 Boosted-rail amplifier |
| 05/19/2011 | WO2009123568A8 High efficiency linear transmitter |
| 05/19/2011 | US20110117860 Reducing Common Mode Effects In An Output Stage |
| 05/19/2011 | US20110115566 Receiver including an lcd tank filter and method thereof |
| 05/19/2011 | US20110115565 Cascaded amplifiers with transformer-based bypass mode |
| 05/19/2011 | US20110115563 Amplifier circuit and methods of operation thereof |
| 05/19/2011 | US20110115562 Class Resonant-H Electrosurgical Generators |
| 05/19/2011 | US20110115561 Output common mode voltage stabilizer over large common mode input range in a high speed differential amplifier |
| 05/19/2011 | US20110115560 Differential pair with constant offset |
| 05/19/2011 | DE102010040732A1 Dreipegel-PWM-Verstärker und Audioverarbeitungsvorrichtung Three-level PWM amplifiers and audio processing apparatus |
| 05/18/2011 | EP2323255A1 Power amplifier circuit for an input signal and transmission system including such a circuit |
| 05/18/2011 | EP2323254A1 A plop-free amplifier |
| 05/18/2011 | EP2321902A1 Switching power amplifier for quantized signals |
| 05/18/2011 | EP2321901A1 Hybrid class amplifier |
| 05/18/2011 | EP2321900A1 Switched capacitor amplifier |
| 05/18/2011 | EP2321898A1 Adaptive bias current generation for switched-capacitor circuits |
| 05/18/2011 | EP2321872A1 Modular solid-state millimeter wave (mmw) rf power source |
| 05/18/2011 | CN201839259U Music playing module |
| 05/18/2011 | CN1717862B Activation signal output circuit and determining circuit |
| 05/18/2011 | CN102067445A Amplifier for controlling gain and optical module |
| 05/18/2011 | CN102067444A Improved filter for switched mode power supply |
| 05/18/2011 | CN102067443A Amplifier with gain expansion stage |
| 05/18/2011 | CN102065030A Transmission line driver and driving method |
| 05/18/2011 | CN102064795A Integrated circuit layout method for offset cancelling circuit |
| 05/18/2011 | CN102064779A Signal isolation and amplification device |
| 05/18/2011 | CN102064778A Gain adjustable amplifier |
| 05/18/2011 | CN102064777A Amplification circuit |
| 05/18/2011 | CN102064776A Power amplifier |
| 05/18/2011 | CN102064775A Recorder amplifier module |
| 05/18/2011 | CN102064774A Implementation method of power amplifying circuit and power amplifying device |
| 05/18/2011 | CN102064773A 可调增益低噪声放大器 Variable gain low noise amplifier |
| 05/18/2011 | CN102064772A Power amplifier device and sound field calibration method thereof |
| 05/18/2011 | CN102064770A Remote radio unit and method for regulating drain voltage thereof |
| 05/18/2011 | CN102064766A Noise generator |
| 05/18/2011 | CN102064468A Low-voltage self-adaptive optical communication laser driver circuit |
| 05/18/2011 | CN101656534B Output-stage circuit and operational amplifier |
| 05/18/2011 | CN101557200B Power amplifier capable of regulating noise |
| 05/18/2011 | CN101414805B Semiconductor integrated circuit with variable gain amplifier |
| 05/18/2011 | CN101375504B Low noise amplifier |
| 05/18/2011 | CN101355345B Power amplifier |
| 05/18/2011 | CN101290793B Semiconductor device operated by hamming distance method |
| 05/18/2011 | CN101278477B Digital audio amplifier and digital audio amplifying method therefor |
| 05/17/2011 | US7945220 LINC power transmitter |
| 05/17/2011 | US7945060 Parameter display method and program therefor, and parameter setting apparatus |
| 05/17/2011 | US7944311 Feedback biasing for cascode amplifiers |
| 05/17/2011 | US7944310 Active balun circuit |
| 05/17/2011 | US7944309 Transconductance bias circuit, amplifier and method |
| 05/17/2011 | US7944308 Amplifier circuit and the controlling method thereof |
| 05/17/2011 | US7944307 Wideband RF amplifiers |
| 05/17/2011 | US7944305 RF pre-amplifiers and power amplifiers |
| 05/17/2011 | US7944304 High efficiency millimeter wave field-effect transistor (FET) amplifier with coupled line matching network |
| 05/17/2011 | US7944303 Super source follower output impedance enhancement |