| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 12/16/2014 | US8912849 Adaptive operational amplifier bias current |
| 12/16/2014 | US8912848 Digital pre-distortion device and method for a broadband power amplifier |
| 12/16/2014 | US8912847 Power amplifier circuit and front end circuit |
| 12/16/2014 | US8912846 Doherty amplifier arrangement |
| 12/16/2014 | US8912833 Device and method for pulse width modulation |
| 12/16/2014 | US8912788 Low power stimulated emission nuclear quadrupole resonance detection at multiple reference power levels |
| 12/16/2014 | US8912475 Optical sensing system with a phase sensitive amplifier and associated methods |
| 12/11/2014 | US20140363029 Programmable audio device |
| 12/11/2014 | US20140363016 Amplified headphone system with integrated power amplifier |
| 12/11/2014 | US20140361839 Nonlinear capacitance linearization |
| 12/11/2014 | US20140361838 Amplifier for television tuner chip and method therefor |
| 12/11/2014 | US20140361837 Integrated circuit wireless communication unit and method for providing a power supply |
| 12/11/2014 | US20140361836 Current amplifier and transmitter using the same |
| 12/11/2014 | US20140361835 Current Mirror |
| 12/11/2014 | US20140361834 Four lc element balun |
| 12/11/2014 | US20140361833 Single-input class-ab rail-to-rail output stage |
| 12/11/2014 | US20140361832 Operational transconductance amplifier |
| 12/11/2014 | US20140361831 Amplifier device and method for activating an amplifier device or the amplifier unit |
| 12/10/2014 | CN204013421U 运算控制型发射器 Operational control type transmitters |
| 12/10/2014 | CN204013420U 一种线性传感器桥式放大电路 A linear sensor bridge amplifier |
| 12/10/2014 | CN204013419U 一种实现真零点输出的电桥式传感器的放大电路 An amplifier output power to achieve true zero bridge sensor |
| 12/10/2014 | CN204013418U 用于涡街流量计的宽量程前置放大电路 Preamplifier circuit for a wide range of vortex flowmeter |
| 12/10/2014 | CN204013417U 热分流式微波功率放大器 Hot Split microwave power amplifier |
| 12/10/2014 | CN204013416U 一种宽带放大器 Wideband Amplifier |
| 12/10/2014 | CN204013415U 一种时分双工系统放大器及直放站 A time division duplex system amplifiers and repeaters |
| 12/10/2014 | CN204013414U 放大电路 Amplifier |
| 12/10/2014 | CN204013412U 一种可调增益射频宽带放大器 An adjustable gain broadband RF amplifier |
| 12/10/2014 | CN204013408U 一种微弱电信号放大检测电路 A tinny amplifying and detecting circuit |
| 12/10/2014 | CN204013405U 一种支持多频段的可调谐高效功率放大器 A supportive and efficient multi-band tunable power amplifiers |
| 12/10/2014 | CN204012680U 信号调理电路及其组成的断路器的智能控制电路 Intelligent control circuit signal conditioning circuit breaker and composition |
| 12/10/2014 | CN204009764U 晶体管型放大的触摸式键盘 Transistor enlarged touch keyboard |
| 12/10/2014 | CN104205627A 行波放大器中用于减轻直流(dc)偏置电感器自谐振效应的锥形衰减器网络 Traveling wave amplifier for reducing direct current (dc) bias inductor self resonance effect of the tapered attenuator network |
| 12/10/2014 | CN104205626A 具有可编程输入阻抗的开路增益互阻抗放大器 Open with programmable gain transimpedance amplifier input impedance |
| 12/10/2014 | CN104204986A 基准电压电路 A reference voltage circuit |
| 12/10/2014 | CN104202279A 用于多信道宽带通信系统中的基带预失真线性化的方法和系统 Broadband communication system for multi-channel baseband predistortion linearization method and system |
| 12/10/2014 | CN104201999A 基于自适应尾电流的跨导运算放大器 Adaptive tail current transconductance operational amplifier |
| 12/10/2014 | CN104201998A 一种实用的低频信号包络线提取电路及提取方法 A practical low-frequency signal envelope extraction circuit and extraction method |
| 12/10/2014 | CN104201997A 一种d类音频放大器 One kind of class d audio amplifier |
| 12/10/2014 | CN104201996A 一种用于d类功率放大器的反馈电路及电子设备 An d power amplifier feedback circuits and electronic equipment used |
| 12/10/2014 | CN104201995A 信号放大电路 Signal amplifying circuit |
| 12/10/2014 | CN104201994A 射频域数字预失真 RF domain digital predistortion |
| 12/10/2014 | CN104200260A 解调电路 Demodulation circuit |
| 12/10/2014 | CN102655395B 一种直流与微波信号交叉布线的放大器电路 A DC and microwave signal amplifier circuit wiring intersect |
| 12/10/2014 | CN102655394B 一种直流与微波信号交叉布线的放大器电路 A DC and microwave signal amplifier circuit wiring intersect |
| 12/10/2014 | CN102638229B 音频放大电路 Audio amplifier circuit |
| 12/10/2014 | CN102187570B 包括具有不同开启功率水平的并联晶体管放大器组的集成电路 An integrated circuit including a transistor amplifier connected in parallel groups that have different power levels open |
| 12/10/2014 | CN102055409B 多级cmos功率放大器 Multistage amplifiers cmos |
| 12/10/2014 | CN101582681B 一种实现消除关机杂音的功率放大电路 One implementation to eliminate shutdown noise power amplifier circuit |
| 12/09/2014 | US8909183 Automatic gain control device |
| 12/09/2014 | US8909179 Method and apparatus for controlling transmit signal of radio frequency power amplifier |
| 12/09/2014 | US8909178 Method, RF module and test method for enabling power amplifier to support multiple powers |
| 12/09/2014 | US8909132 Bi-directional amplifier with a common amplification path |
| 12/09/2014 | US8908890 Circuit arrangement for adjusting the output power and/or the frequency response of a power amplifier for a hearing aid device |
| 12/09/2014 | US8908887 Multi-channel class-D audio amplifier with planar inductors |
| 12/09/2014 | US8908798 Hybrid digital/analog power amplifier |
| 12/09/2014 | US8908795 Apparatus and method for calibration of supply modulation in transmitter |
| 12/09/2014 | US8908751 Joint adaptive bias point adjustment and digital pre-distortion for power amplifier |
| 12/09/2014 | US8907729 Trans-impedance amplifier for high speed optical-electrical interfaces |
| 12/09/2014 | US8907728 High power wideband amplifier and method |
| 12/09/2014 | US8907726 Voltage, current, and saturation prevention |
| 12/09/2014 | US8907725 Circuit to prevent load-induced non-linearity in operational amplifiers |
| 12/09/2014 | US8907724 Variable gain amplifier |
| 12/09/2014 | US8907723 Power amplifier and power transmission apparatus |
| 12/09/2014 | US8907722 Traveling wave amplifier with suppressed jitter |
| 12/09/2014 | US8907721 Offset cancellation for audio amplifier |
| 12/04/2014 | US20140355790 Amplifier and method of amplifying a differential signal |
| 12/04/2014 | US20140355715 Power supply device, method for managing power supply thereof and wireless communication terminal |
| 12/04/2014 | US20140354363 Power amplifier |
| 12/04/2014 | US20140354362 Amplifier calibration |
| 12/04/2014 | US20140354361 Sense amplifiers including bias circuits |
| 12/04/2014 | US20140354360 High frequency module and portable terminal using same |
| 12/04/2014 | US20140354359 High-frequency signal processing device |
| 12/04/2014 | US20140354358 Power amplifier |
| 12/04/2014 | US20140354357 Apparatus for common mode suppression |
| 12/04/2014 | US20140354356 Circuits and methods related to power amplifier efficiency based on multi-harmonic approximation |
| 12/04/2014 | US20140354355 Method of calibrating a multiport amplifier, multiport amplifier allowing the implementation of such a method, and satellite comprising such an amplifier |
| 12/04/2014 | US20140354354 Nanovolt amplifier design |
| 12/04/2014 | US20140354353 Device having a delta-sigma modulator and a switching amplifier connected thereto |
| 12/04/2014 | US20140354352 Self-oscillating class-d amplifier and self-oscillating frequency control method for self-oscillating class-d amplifier |
| 12/04/2014 | US20140354350 Self-healing technique for high frequency circuits |
| 12/02/2014 | US8903343 Single-input multiple-output amplifiers with independent gain control per output |
| 12/02/2014 | US8903342 High dynamic range precision variable amplitude controller |
| 12/02/2014 | US8903332 Circuit device and method of coupling to an antenna |
| 12/02/2014 | US8903310 Wireless communication apparatus |
| 12/02/2014 | US8903010 Methods, systems, and computer program products for low power multimode interconnect for lossy and tightly coupled multi-channel |
| 12/02/2014 | US8902965 Pulse shaping for generating NFC initiator transmit waveform |
| 12/02/2014 | US8902017 Equalizer and communication system |
| 12/02/2014 | US8902013 Dynamic range compression circuit and class D amplifier |
| 12/02/2014 | US8902005 Apparatus and method for wide common mode difference |
| 12/02/2014 | US8902004 Reducing the effect of parasitic mismatch at amplifier inputs |
| 12/02/2014 | US8902003 Amplifier, mobile communication device and method for amplifying |
| 12/02/2014 | US8902001 Power supply device and power amplification apparatus using same |
| 12/02/2014 | US8902000 Signal splitting apparatus suitable for use in a power amplifier |
| 12/02/2014 | US8901998 Current-voltage converter having a current reflector, input stage of an amplifier and corresponding amplifier |
| 12/02/2014 | US8901475 Avalanche photodiode biasing system including a current mirror, voltage-to-current converter circuit, and a feedback path sensing an avalanche photodiode voltage |
| 12/02/2014 | US8901474 Enhanced received signal power indicators for optical receivers and transceivers, and methods of making and using the same |
| 11/27/2014 | US20140349589 Dual mode power amplifier control interface with a two-mode general purpose input/output interface |
| 11/27/2014 | US20140347204 High speed dynamic comparator |
| 11/27/2014 | US20140347136 Apparatus and methods for radio frequency amplifiers |
| 11/27/2014 | US20140347135 Bipolar transistors with control of electric field |