| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 05/16/2012 | CN102457237A 单电源发散放大电路 Single power amplifier circuit divergence |
| 05/16/2012 | CN102457236A 单电源发散放大电路 Single power amplifier circuit divergence |
| 05/16/2012 | CN102457233A Cmos低噪声放大电路 Cmos low noise amplifier |
| 05/16/2012 | CN102457232A 高线性、高注入效率ctia单元电路 High linearity, high injection efficiency ctia unit circuit |
| 05/16/2012 | CN101944884B Automatic compensating device and method for grid voltage of power amplification module |
| 05/16/2012 | CN101364792B D type amplifying circuit |
| 05/15/2012 | US8179195 Current-feedback instrumentation amplifiers |
| 05/10/2012 | WO2012061385A1 Method and apparatus for power amplifier linearization |
| 05/10/2012 | WO2012061244A1 Matching network for transmission circuitry |
| 05/10/2012 | WO2012018233A3 Amplifier supporting multi mode and amplifying method thereof |
| 05/10/2012 | US20120116268 Switched Resonant Ultrasonic Power Amplifier System |
| 05/10/2012 | US20120112840 Semiconductor integrated circuit device |
| 05/10/2012 | US20120112834 Device Comprising a Controlled Matching Stage |
| 05/10/2012 | DE102010043730A1 Strom-Spannungs-Wandler, Empfänger, Verfahren zum Bereitstellen eines Spannungssignals und Verfahren zum Empfangen eines Empfangssignals Current-voltage transducer, receiver, A method for providing a voltage signal and method for receiving a reception signal |
| 05/10/2012 | DE102006006568B4 Verstärkereinrichtung Amplifier device |
| 05/10/2012 | DE102005014946B4 Offset-Kompensationsschaltung für eine Überwachungs-Photodiode Offset compensation circuit for a monitor photodiode |
| 05/09/2012 | EP2451075A1 Power consumption control circuit, amplifying circuit, and power consumption control method |
| 05/09/2012 | EP2451074A1 Amplifier |
| 05/09/2012 | EP2449674A1 Dual use transistor |
| 05/09/2012 | EP2449396A1 Generator of a modulated radiofrequency signal, method for calibrating the generator, and magnetic resonance imaging system |
| 05/09/2012 | CN202218193U Multiple band power amplifier |
| 05/09/2012 | CN102449903A Low dissipation amplifier |
| 05/09/2012 | CN102449902A Multi-stage amplifier |
| 05/09/2012 | CN102447444A DC voltage signal amplifier |
| 05/09/2012 | CN102447442A Power amplifier linearization method and apparatus |
| 05/09/2012 | CN102447441A Power amplifying equipment and method for acquiring power regulation factor |
| 05/09/2012 | CN101304244B Matching circuit |
| 05/09/2012 | CN101064519B Transmission circuit, and communication apparatus using the same |
| 05/08/2012 | US8174321 Apparatus and method for miller compensation for multi-stage amplifier |
| 05/08/2012 | US8174315 Method and circuit for transforming the impedance of a load |
| 05/08/2012 | US8174314 Aparatus and a method for processing and amplifying a signal |
| 05/03/2012 | WO2012055501A1 Method and apparatus for efficient and distortion compensated digital class-d amplifier ternary modulation scheme |
| 05/03/2012 | US20120108300 Audio amplifier |
| 05/03/2012 | US20120106600 Analog signal processor for nonlinear predistortion of radio-frequency signals |
| 05/03/2012 | US20120105157 Variable gain amplifier |
| 05/03/2012 | US20120105155 Pulse width modulation circuit and voltage-feedback class-d amplifier circuit |
| 05/03/2012 | US20120105154 Switching Power Supply |
| 05/03/2012 | US20120105153 Pop sound reduction circuit and audio circuit having such pop sound reduction circuit for use in audio amplifier |
| 05/03/2012 | US20120105148 Amplifier circuit and radio receiver |
| 05/03/2012 | US20120102976 Pulse tube cryocooler modulating phase via inertance tube and acoustic power amplifier thereof |
| 05/03/2012 | DE102010018274A1 Verfahren zur Auslegung einer elektronischen Schaltung Methods for the design of an electronic circuit |
| 05/02/2012 | EP2448116A1 Amplifier circuit, integrating circuit, and light-detection device |
| 05/02/2012 | EP2448114A1 Method and apparatus for efficient and distortion compensated digital Class-D amplifier ternary modulation scheme |
| 05/02/2012 | EP2448112A1 Digital predistortion device and method of operating a digital predistortion device |
| 05/02/2012 | EP2446531A2 Rf single-ended to differential converter |
| 05/02/2012 | EP2446530A1 Method and apparatus for using pre-distortion and feedback to mitigate nonlinearity of circuits |
| 05/02/2012 | CN202210779U High-power low-noise limiting amplifier with favorable cooling performance |
| 05/02/2012 | CN202210778U Limiting amplifier applied to radar and microwave communication |
| 05/02/2012 | CN1960167B High-bandwidth high-gain amplifier |
| 05/02/2012 | CN102439856A Adaptive parametric power amplifier protection circuit |
| 05/02/2012 | CN102439849A Buffer with active output impedance matching |
| 05/02/2012 | CN102439848A Signal processing device and signal processing method |
| 05/02/2012 | CN102437860A DC power control for power amplifiers |
| 05/02/2012 | CN102437824A Direct-cooling type high integrated level charge sensitive pre-amplifier |
| 05/02/2012 | CN102437823A Wideband low noise sensor amplifier circuit |
| 05/02/2012 | CN102437822A Self-adaptive digital pre-distortion linear system of radio frequency power amplifier |
| 05/02/2012 | CN102437821A Device and method for linearization of synthetic aperture radar transmitter |
| 05/02/2012 | CN102437820A Clock amplifier circuit for lowering introduction of phase noise |
| 05/02/2012 | CN102437819A Large dynamic cascade Doherty power amplifier |
| 05/02/2012 | CN101840673B Amplifier and source driver applying same |
| 05/02/2012 | CN101507106B Amplifier circuit and display apparatus having the same |
| 05/02/2012 | CN101325401B Circuit for restraining start-up and closedown noise of whole difference audio power amplifier |
| 05/01/2012 | US8170838 Simulating two-dimensional periodic patterns using compressed fourier space |
| 05/01/2012 | US8170425 Optical signal receiving circuit |
| 05/01/2012 | US8169261 High efficiency amplification |
| 04/26/2012 | WO2012053980A1 Power amplifier and linearization techniques using active and passive devices |
| 04/26/2012 | WO2012053086A1 Output mode switching amplifier |
| 04/26/2012 | WO2012029078A3 Low distortion filters |
| 04/26/2012 | WO2011137832A3 Doherty circuit, n-way doherty circuit and base station equipment |
| 04/26/2012 | US20120098596 Power amplifier apparatus, distortion compensation coefficient updating method, and transmission apparatus |
| 04/26/2012 | US20120098504 High Efficiency Variable Voltage Supply |
| 04/26/2012 | DE102006034560B4 Verstärkerstufe, Operationsverstärker und Verfahren zur Signalverstärkung Amplifier stage operational amplifier and method for signal amplification |
| 04/26/2012 | DE102004057793B4 Digitale gedächtnisbasierte Vorverzerrungstechnik Digital memory-based predistortion technique |
| 04/25/2012 | EP2445105A1 Power management system for dual travelling wave tube amplifier |
| 04/25/2012 | EP2443742A1 Detection circuit for overdrive conditions in a wireless device |
| 04/25/2012 | EP2443741A1 Improving input impedance of low noise preamplifiers used for mri |
| 04/25/2012 | EP2443740A1 Apparatus and method for class-g line driver control signal |
| 04/25/2012 | EP2443739A1 A high efficiency transmitter for wireless communication |
| 04/25/2012 | CN202206349U 一种用于wcdma直放站系统中的50W大功率放大器 A repeater system wcdma 50W high power amplifier |
| 04/25/2012 | CN202206348U 一种用于cdma2000直放站系统中的50W功率放大器 A cdma2000 50W power amplifier repeater system |
| 04/25/2012 | CN202206345U 一种高性能信号放大器 A high-performance amplifier |
| 04/25/2012 | CN102428648A 用于功率放大器及其它电路的具有集成的阻抗匹配、功率组合及滤波的输出电路 Output circuit impedance matching, power combining and filtering for power amplifiers and other circuits with integrated |
| 04/25/2012 | CN102428645A Transimpedance amplifier with distributed control of feedback line |
| 04/25/2012 | CN102428644A Transmitter with quantization noise compensation |
| 04/25/2012 | CN102427438A 一种自适应数字预失真参数训练方法 An adaptive digital predistortion parameter training methods |
| 04/25/2012 | CN102427338A 自动变换输入阻抗的信号放大器及其实现方法 Automatic conversion signal amplifier input impedance and its implementation |
| 04/25/2012 | CN102427337A 一种电流负反馈控制电路 A current negative feedback control circuit |
| 04/25/2012 | CN102427336A 一种实现自适应数字预失真线性化的射频功率放大系统 An implementation of adaptive digital predistortion linearization of RF power amplifier system |
| 04/25/2012 | CN102427335A Photoelectric detection preamplifier circuit |
| 04/25/2012 | CN102427334A 可产生能替代驻极体电压的前置放大器芯片 Can produce can replace electret voltage preamplifier chip |
| 04/25/2012 | CN102427333A 电极前置放大器 Electrode preamplifier |
| 04/25/2012 | CN102427332A Doherty power amplifier and method and equipment for improving power amplification efficiency of Doherty power amplifier |
| 04/25/2012 | CN102427331A 高效率线性功放技术 High efficiency linear power amplifier technology |
| 04/25/2012 | CN101651452B 一种rc积分电路 One kind of rc integrator circuit |
| 04/25/2012 | CN101136618B Tunable ferro-electric filter |
| 04/24/2012 | US8165850 Determining the direction of a signal source |
| 04/24/2012 | US8164383 Circuits and methods for amplifying signals |
| 04/19/2012 | WO2012050864A1 Reducing non-linearities in a differential receiver path prior to a mixer using calibration |
| 04/19/2012 | WO2012048544A1 Amplifier and implementation method thereof |
| 04/19/2012 | WO2012021009A3 Receiving device and method for removing mismatch in wireless communication system, and low-power amplifier therefor |