| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/10/2012 | US8093951 Pulse-width modulated (PWM) audio power amplifier having output signal magnitude controlled pulse voltage and switching frequency |
| 01/10/2012 | US8093950 Power amplifier having transformer |
| 01/05/2012 | WO2012003113A2 Grounding switch method and apparatus |
| 01/05/2012 | WO2012002407A1 High frequency power amplifier |
| 01/05/2012 | WO2012000129A1 Multi-band power amplifier |
| 01/05/2012 | US20120001892 Operational amplifier circuit, signal driver, display device, and offset voltage adjusting method |
| 01/05/2012 | US20120001697 Differential amplifier stage with integrated offset cancellation circuit |
| 01/05/2012 | US20120001696 Semiconductor integrated circuit device |
| 01/05/2012 | US20120001695 Radio frequency power amplifier |
| 01/05/2012 | US20120001692 Adaptive power amplifier |
| 01/05/2012 | US20120001691 Variable gain amplifier with reduced power consumption |
| 01/05/2012 | US20120001690 System for Driver Amplifier |
| 01/05/2012 | US20120001689 Nanoelectronic differential amplifiers and related circuits implemented on a segment of a graphene nanoribbon |
| 01/05/2012 | US20120001686 High frequency circuit |
| 01/05/2012 | US20120001605 Differential amplifier circuit and series regulator |
| 01/05/2012 | DE19755164B4 Leistungsstufe eines Verstärkers/Senders Output stage of an amplifier / transmitter |
| 01/05/2012 | DE102011001510A1 Leistungsverstärkerlinearisierung mit auslöschungsbasierten Vorwärtskopplungsverfahren und -systemen Power amplifier linearization with extinction based feedforward methods and systems |
| 01/04/2012 | EP2403137A1 Hybrid networks |
| 01/04/2012 | EP2403136A1 Power amplifier chain implementing a sigma-delta modulator with digital predistortion feedback |
| 01/04/2012 | EP2401813A1 Fast common mode feedback control for differential driver |
| 01/04/2012 | EP2401811A1 Low dissipation amplifier |
| 01/04/2012 | EP2084812B1 Amplifier circuit |
| 01/04/2012 | EP2062350B1 Switch-less bidirectional amplifier |
| 01/04/2012 | CN202103661U Multi-mode multi-frequency handset radio frequency front module |
| 01/04/2012 | CN202103630U Input amplification circuit for power amplification unit of digital television transmitter |
| 01/04/2012 | CN202103629U Audio power amplifier module |
| 01/04/2012 | CN1622450B 放大器 Amplifiers |
| 01/04/2012 | CN102308475A Radio-frequency power amplifier |
| 01/04/2012 | CN102308474A 功率放大器和功率放大方法 And a power amplifier amplifying method |
| 01/04/2012 | CN101753109B Power amplifier and modulator thereof |
| 01/04/2012 | CN101741320B Wide-area high-resolution programmable gain amplifier |
| 01/04/2012 | CN101578763B Transmission power control method and transmission device |
| 01/04/2012 | CN101578762B Polar modulation transmission device and transmission power control method |
| 01/04/2012 | CN101167245B Differential inductor-based low noise amplifier |
| 01/03/2012 | US8089323 Green technology: green circuit and device designs of green chip |
| 01/03/2012 | US8089316 Wideband active circuit with feedback structure |
| 01/03/2012 | US8089315 Programmable gain amplifier |
| 01/03/2012 | US8089314 Operational amplifier having improved slew rate |
| 01/03/2012 | CA2584213C Systems and methods for vector power amplification |
| 01/03/2012 | CA2580297C Photodiode amplifier |
| 12/29/2011 | WO2011161911A1 Amplifier apparatus |
| 12/29/2011 | WO2011161890A1 High-frequency amplifier circuit |
| 12/29/2011 | WO2011161847A1 Power amplifier |
| 12/29/2011 | WO2011161759A1 Semiconductor device |
| 12/29/2011 | WO2011161563A1 Balanced-input current-sensing differential amplifier |
| 12/29/2011 | WO2011160330A1 Tracking power supply device and controlling method thereof |
| 12/29/2011 | US20110318015 Amplifier with offset compensator and optical receiver implemented with the same |
| 12/29/2011 | US20110316637 Amplifier module with multiple operating modes |
| 12/29/2011 | US20110316636 Digital tunable inter-stage matching circuit |
| 12/29/2011 | US20110316635 Triplet transconductor |
| 12/29/2011 | US20110316634 High speed low power multiple standard and supply output driver |
| 12/29/2011 | US20110316633 Amplifying device |
| 12/29/2011 | US20110316632 Optical communication device |
| 12/29/2011 | US20110316631 Lna circuit for use in a low-cost receiver circuit |
| 12/29/2011 | US20110316630 Push-pull linear hybrid class h amflier |
| 12/29/2011 | US20110316629 Offset cancellation for differential circuits |
| 12/29/2011 | US20110316628 Complimentary single-ended-input ota-c universal filter structures |
| 12/29/2011 | US20110316627 Dynamic constant power amplifier |
| 12/29/2011 | US20110316626 D-class amplifier |
| 12/29/2011 | US20110316507 Multiple-input comparator and power converter |
| 12/29/2011 | DE10317968B4 Spannungs-Strom-Wandler mit einstellbarem Ruhestrom Voltage-current converter with adjustable bias current |
| 12/29/2011 | DE102011077566A1 LNA-Schaltkreis zum Gebrauch in einem kostengünstigen Receiver-Schaltkreis LNA circuit for use in a low cost receiver circuit |
| 12/29/2011 | DE102005055426B4 Schaltungsanordnung mit einem rückgekoppelten, voll-differentiellen Operationsverstärker Circuit with a feedback, fully-differential operational amplifier |
| 12/28/2011 | EP2400661A2 Power amplification apparatus, OFDM modulation apparatus, wireless transmission apparatus, and distortion reduction method for power amplification apparatus |
| 12/28/2011 | EP2399337A2 Systems and methods for driving high power stages using lower voltage processes |
| 12/28/2011 | EP2041868B1 Minimizing switching noise and its effects in auto-zeroed amplifiers |
| 12/28/2011 | CN202094977U 一种可提升音频功率放大器效率的手机 One kind of audio power amplifier can improve the efficiency of the mobile phone |
| 12/28/2011 | CN202094844U 一种内置有强插电源模块的网络功率放大器 A built a strong network plug the power amplifier module |
| 12/28/2011 | CN102301588A 具有两个放大级的运算跨导放大器 Having two amplification stages Operational Transconductance Amplifier |
| 12/28/2011 | CN102299993A 用于在移动终端中放大功率的装置和方法 Power amplification in a mobile terminal apparatus and a method for |
| 12/28/2011 | CN102299692A 一种基于阻变器件的加法器电路 Based on resistive switching devices adder circuit |
| 12/28/2011 | CN102299691A 多输入差动放大装置及发光元件驱动装置 Multi-input differential amplifying means and a light emitting element drive device |
| 12/28/2011 | CN102299690A 用于过流保护的系统和方法 System and method for overcurrent protection |
| 12/28/2011 | CN102299689A 基于包络跟踪技术的高效率双频功率放大器的设计方法 Envelope tracking technology, high efficiency power amplifier design method based on dual |
| 12/28/2011 | CN102299688A 一种音频功率放大器及音频功放模式切换方法 An audio power amplifier and audio amplifier mode switching method |
| 12/28/2011 | CN102299687A 维持usb兼容性和掉电保护的同时提高音频放大器性能 Maintain usb compatibility and power-down protection while improving performance audio amplifier |
| 12/28/2011 | CN101697477B 调整功放电路输出信号线性度的系统、方法及功放电路 Adjust the output signal linearity amplifier circuit systems, methods and amplifier circuit |
| 12/28/2011 | CN101635170B 电流灵敏放大器 Current sense amplifier |
| 12/28/2011 | CN101627534B 包括参考电压电路的信号处理器 Includes a signal processor circuit, a reference voltage |
| 12/28/2011 | CN101601184B 电源电压形成装置及极化调制发送装置 And polar modulation transmission apparatus of the power supply voltage forming apparatus |
| 12/28/2011 | CN101582682B 一种功率放大器和发射机 A power amplifier and transmitter |
| 12/28/2011 | CN101478294B 共源共栅开关功率放大器的系统和方法 Common-source systems and methods common-gate amplifier switch |
| 12/28/2011 | CN101449459B 最小化自动调零放大器中的切换噪声及其影响 Minimize auto-zero amplifier switching noise and its impact |
| 12/27/2011 | US8086358 Method for pre-heating high power devices to enable low temperature start-up and operation |
| 12/27/2011 | US8086305 Implantable signal amplifying circuit for electroneurographic recording |
| 12/27/2011 | US8086263 Double transformer balun for maximum power amplifier power |
| 12/27/2011 | US8085096 Apparatus and method for improved amplifier shunt-peak loading |
| 12/27/2011 | US8085095 Switched capacitor voltage converter for a power amplifier |
| 12/27/2011 | US8085094 High frequency amplifier |
| 12/27/2011 | US8085093 Differentially compensated input pair |
| 12/27/2011 | US8085092 Amplifier arrangement and method for amplification |
| 12/27/2011 | US8085091 Gain control amplifier |
| 12/27/2011 | US8084679 Electronic signal processor |
| 12/22/2011 | WO2011159308A1 Integrated linear power detection in an rf power amplifier |
| 12/22/2011 | WO2011159213A1 Active circulator |
| 12/22/2011 | WO2011158466A1 High frequency amplifier |
| 12/22/2011 | WO2011158465A1 Modulation power supply circuit |
| 12/22/2011 | WO2011158360A1 Burst-mode transimpedance amplifier |
| 12/22/2011 | WO2011158170A1 Gradient coil power supply and a magnetic resonance imaging system |
| 12/22/2011 | WO2011119632A3 Discrete time operational transconductance amplifier for switched capacitor circuits |