| 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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| 01/06/2015 | US8928362 Semiconductor device and electronic apparatus using the same |
| 01/06/2015 | US8928355 Amplifier bandwidth extension for high-speed tranceivers |
| 01/06/2015 | US8928181 Method and apparatus for transmission of energy and data |
| 01/01/2015 | US20150005914 Power Increase Based on Packet Type |
| 01/01/2015 | US20150003843 Open-gain trans-impedance amplifier with programmable input impedance |
| 01/01/2015 | US20150003617 Power Supplies |
| 01/01/2015 | US20150002235 Dynamic headroom for envelope tracking |
| 01/01/2015 | US20150002234 Timing alignment for modulated supply |
| 01/01/2015 | US20150002233 Control loop for amplification stage |
| 01/01/2015 | US20150002232 Power supply device for high frequency power amplification circuit and high frequency power amplification device |
| 01/01/2015 | US20150002228 Amplifier with improved noise reduction |
| 01/01/2015 | US20150002227 Mmic power amplifier |
| 01/01/2015 | US20150002225 Low-noise amplifier |
| 01/01/2015 | US20150002224 Bias circuit and power amplifier with selection function of power mode |
| 01/01/2015 | US20150002223 Bias circuit |
| 01/01/2015 | US20150002221 Instrumentation Amplifier and Signal Amplification Method |
| 01/01/2015 | US20150002220 Method of power amplifier calibration |
| 12/31/2014 | CN204068873U 正负栅压功放管供电控制系统及正负栅压功放系统 Positive and negative gate voltage amplifier tube power supply control system and the positive and negative gate voltage amplifier system |
| 12/31/2014 | CN204068871U 一种低噪声高动态的波导限幅低噪声放大器 A low noise high dynamic waveguide limiting low-noise amplifier |
| 12/31/2014 | CN104254973A 基于变压器的rf功率放大器 Based rf power amplifier transformer |
| 12/31/2014 | CN104253589A 静态电流均衡方法、输出级电路、ab类放大器及电子设备 Quiescent current equalization method, the output stage circuit, ab class amplifier and electronic equipment |
| 12/31/2014 | CN104253588A 失真补偿设备、失真补偿方法和无线电通信设备 Distortion compensation device, distortion compensation method and radio communication equipment |
| 12/31/2014 | CN102570986B 一种提高功率放大器工作效率的方法及通信终端 Method for improving the efficiency of the power amplifier method and communication terminal |
| 12/31/2014 | CN102484454B 用于功率放大的线性化电路和方法 Linearization circuit and method for power amplification |
| 12/31/2014 | CN102106081B 具有可编程输出阻抗调节电路的驱动器放大器 Having a programmable output impedance adjustment circuit of the drive amplifier |
| 12/31/2014 | CN102106080B 液晶驱动装置 Liquid crystal driving device |
| 12/30/2014 | US8923789 Method of diminishing the minimum range of operation of a communication link |
| 12/30/2014 | US8923436 Transmitter and method for controlling same |
| 12/30/2014 | US8922282 Low output impedance RF amplifier |
| 12/30/2014 | US8922281 Power amplifier and operation method therefor |
| 12/30/2014 | US8922280 Temperature compensation circuit and electronic device with temperature compensation |
| 12/30/2014 | US8922277 Switching power amplifier and method of controlling the same |
| 12/30/2014 | US8922276 Auto-zero amplifier and feedback amplifier circuit using the auto-zero amplifier |
| 12/30/2014 | US8922275 Common mode input control for switch capacitor amplifier in pipeline analog-to-digital converter |
| 12/30/2014 | US8922274 Bioamplifier for neural interfaces |
| 12/25/2014 | US20140375388 High Speed Power Supply System |
| 12/25/2014 | US20140375386 Low-Noise Amplifier Circuit |
| 12/24/2014 | CN204046567U 用于甲烷气体传感器信号处理的正反馈处理电路 Methane gas sensor signal processing for the positive feedback processing circuit |
| 12/24/2014 | CN204046530U 一种低噪声跨阻放大器及其光接收机前置放大器 A low-noise transimpedance amplifier and an optical receiver preamplifier |
| 12/24/2014 | CN204046527U 一种直接耦合放大电路及保护电路 A direct-coupled amplifier circuit and protection circuit |
| 12/24/2014 | CN204046525U 一种高保真汽车功放 One kind of high-fidelity car amplifier |
| 12/24/2014 | CN204046524U 单级低噪声放大器 Single-stage low noise amplifier |
| 12/24/2014 | CN204046523U Doherty功率放大器电路和LTE宽带放大器模块 Doherty power amplifier circuit and LTE broadband amplifier modules |
| 12/24/2014 | CN204046522U 宽带对数放大器 Wideband logarithmic amplifier |
| 12/24/2014 | CN104247257A 用于实现增强的扰乱拒斥的可重配置lna Reconfigurable lna for achieving enhanced disturb rejection of |
| 12/24/2014 | CN104242841A 一种高精度的压电陶瓷的驱动放大电路 A high-precision piezoelectric ceramic driver amplifier |
| 12/24/2014 | CN104242837A 电视调谐器芯片的放大器及其方法 TV tuner chip amplifier and its method |
| 12/24/2014 | CN104242836A 射频功率放大器与电子系统 RF power amplifiers and electronic systems |
| 12/24/2014 | CN104242835A 一种基于fpga的超短波电台alc控制系统和方法 An FM radio alc control system and method based fpga |
| 12/24/2014 | CN104242834A 基于高阶多项式拟合的接收机前置放大器非线性响应建模方法 Based on high-order polynomial fitting receiver preamplifier nonlinear response modeling |
| 12/24/2014 | CN104242833A 失真补偿设备 Distortion compensation equipment |
| 12/24/2014 | CN104242832A 无线通信装置及其功率放大电路 The wireless communication apparatus and a power amplifier circuit |
| 12/24/2014 | CN104242831A 宽带低噪声放大装置 Broadband low noise amplification device |
| 12/24/2014 | CN104242830A 基于有源电感的可重配置超宽带低噪声放大器 Active inductor based reconfigurable ultra-wideband low-noise amplifier |
| 12/24/2014 | CN104242829A 与基于多谐波近似的功率放大器效率相关的电路和方法 Multi-harmonic approximation based power amplifier efficiency associated circuits and methods |
| 12/24/2014 | CN102611393B 一种具有波段切换的射频功放系统 An RF power amplifier system with a band switching |
| 12/24/2014 | CN102498663B 用于g类线路驱动器控制信号的设备和方法 G class for line drive signal control apparatus and method |
| 12/23/2014 | US8917144 Power amplifier |
| 12/23/2014 | US8917140 Apparatus and method for improving efficiency in power amplifier |
| 12/23/2014 | US8916823 Method and system for non-destructive distribution profiling of an element in a film |
| 12/18/2014 | US20140369520 Negative Audio Signal Voltage Protection Circuit and Method for Audio Ground Circuits |
| 12/18/2014 | US20140368949 Class-ab amplifier, motor device, magnetic disk storage device, and electronic apparatus |
| 12/18/2014 | US20140368280 Protection Module for RF-Amplifier |
| 12/18/2014 | US20140368277 Radio frequency power amplifier and electronic system |
| 12/18/2014 | US20140368268 Load Tuning Circuit For Pulse-Width / Pulse-Position Modulation Amplifier And Related Techniques |
| 12/18/2014 | US20140368267 Chopped circuit with ac and dc ripple error feedback loops |
| 12/17/2014 | CN204031081U 一种宽带自动增益控制电路 Wideband AGC circuit |
| 12/17/2014 | CN204031076U 一种连续调节d类功放功率的电路 A continuous adjustment d class amplifier power circuit |
| 12/17/2014 | CN204031075U 一种微波宽带限幅放大器 A microwave wideband limiting amplifier |
| 12/17/2014 | CN204031074U 一种ClassD音频功率放大器温度保护调制电路 One kind ClassD audio power amplifier temperature modulation circuit protection |
| 12/17/2014 | CN104221283A 根据多尔蒂原理的准宽带放大器 According to the principle of quasi-wideband amplifier Doherty |
| 12/17/2014 | CN104221282A 应用于整形表以提高包络跟踪放大器的功率放大器效率的振幅因数减小 Applied to the plastic sheet in order to improve the envelope tracking amplifier, power amplifier efficiency crest factor decreases |
| 12/17/2014 | CN104218898A 基于多参数物理模型的三相程控功率源过热保护方法 Based on the three-phase power programmable multi-parameter physical model of the source of overheating protection methods |
| 12/17/2014 | CN104218897A 高效紧凑Doherty功率放大器装置和方法 Compact and efficient Doherty power amplifier device and method |
| 12/17/2014 | CN104218896A 导频生成和对消装置以及前馈功放系统 Pilot generating and feedforward cancellation device and amplifier system |
| 12/17/2014 | CN102545796B 一种行波管线性化器 A horizontal line of the gasifier wave |
| 12/17/2014 | CN102474226B 多级阻抗匹配 Multi-stage impedance matching |
| 12/17/2014 | CN102195569B 功率放大器的共源共栅晶体管的正负反馈的系统和方法 Systems and methods common source of positive and negative feedback common-gate transistor of the power amplifier |
| 12/17/2014 | CN102124646B 具有负载切换的高线性低噪声接收器 High linearity low noise receiver load switch |
| 12/17/2014 | CN101990741B 放大级的改进控制回路 Improved control loop amplifier stage |
| 12/16/2014 | US8914255 Method, apparatus, and computer program product for focus prediction |
| 12/16/2014 | US8914099 Biomedical acquisition system with motion artifact reduction |
| 12/16/2014 | US8913974 RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments |
| 12/16/2014 | US8913973 Methods for determining optimum power supply voltages for radio-frequency power amplifier circuitry |
| 12/16/2014 | US8913971 Selecting PA bias levels of RF PA circuitry during a multislot burst |
| 12/16/2014 | US8913967 Feedback based buck timing of a direct current (DC)-DC converter |
| 12/16/2014 | US8913691 Controlling output power of multiple-input single-output (MISO) device |
| 12/16/2014 | US8913690 Amplifier circuit and wireless communication equipment |
| 12/16/2014 | US8912851 Apparatus and method for providing amplifier linearity information |
| 12/16/2014 | US8912848 Digital pre-distortion device and method for a broadband power amplifier |
| 12/16/2014 | US8912846 Doherty amplifier arrangement |
| 12/16/2014 | US8912845 Multiple winding transformer coupled amplifier |
| 12/11/2014 | US20140362949 Reduced bandwidth digital predistortion |
| 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 | US20140361830 Envelope tracker with variable boosted supply voltage |
| 12/10/2014 | CN204014030U 消除pop噪音的电路 Pop noise elimination circuit |
| 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 | CN204013413U 一种放大器过流保护电路 An amplifier circuit overcurrent protection |
| 12/10/2014 | CN204013412U 一种可调增益射频宽带放大器 An adjustable gain broadband RF amplifier |