| 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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| 06/12/2014 | WO2014086308A1 Gain control method for a broadband inductorless low noise amplifier |
| 06/12/2014 | US20140163431 Switched Resonant Ultrasonic Power Amplifier System |
| 06/12/2014 | US20140159991 Switching power amplifier system for multi-path signal interleaving |
| 06/12/2014 | US20140159818 Doherty power amplifier with tunable impedance load |
| 06/12/2014 | US20140159810 Method and system for aligning signals widely spaced in frequency for wideband digital predistortion in wireless communication systems |
| 06/12/2014 | DE102013020902A1 Hüllkurvendetektor und Verfahren zum Detektieren einer Hüllkurve eines durch einen Leistungsverstärker zu verstärkenden Signals Envelope detector and method for detecting an envelope of a to be amplified by a power amplifier signal |
| 06/11/2014 | EP2741423A1 Digital pre-distortion processing method and apparatus |
| 06/11/2014 | EP2740213A1 A high efficiency power amplifier |
| 06/11/2014 | EP2740212A1 Predistortion circuit, wireless communication unit and method for coefficient estimation |
| 06/11/2014 | EP2740121A1 Solid state audio power amplifier |
| 06/11/2014 | CN203645631U 射频模块智能保护装置 RF module intelligent protection device |
| 06/11/2014 | CN203645630U 前馈功率放大器 Feedforward amplifier |
| 06/11/2014 | CN203645629U 一种用于手机的钳位放大电路 A clamp amplifier for mobile phones |
| 06/11/2014 | CN103858396A Adaptive transmitter pre-distortion reusing existing receiver for feedback |
| 06/11/2014 | CN103858338A Split vcc and common vcc power management architecture for envelope tracking |
| 06/11/2014 | CN103858337A System and method for increasing bandwidth for digital predistortion in multi-channel wideband communication systems |
| 06/11/2014 | CN103856172A Electronic system, radio frequency power amplifier and temperature compensation method of amplifier |
| 06/11/2014 | CN103856171A Single proportion plug-type amplifier |
| 06/11/2014 | CN103856170A Power-stage power supply noise error elimination method of H-bridge type digital D type power amplifier |
| 06/11/2014 | CN103856169A Method for improving output power and efficiency of dual-frequency power amplifier |
| 06/11/2014 | CN103856168A MRI (Magnetic Resonance Imaging) B0 compensation amplifier based on PID (Proportion Integration Differentiation) regulation technology and PWM (Pulse-Width Modulation) technology |
| 06/11/2014 | CN102281035B Amplifier circuit and method for conditioning an output current signal of a detecting element |
| 06/10/2014 | US8751021 Methods and systems for adaptive control |
| 06/10/2014 | US8749308 High efficiency amplification |
| 06/10/2014 | US8749307 Apparatus and method for a tunable multi-mode multi-band power amplifier module |
| 06/10/2014 | US8749305 High efficiency multiple power mode linear radio frequency power amplifier |
| 06/10/2014 | US8749304 Circuit arrangement for a redundant power supply for a power amplifier |
| 06/05/2014 | WO2014085105A1 Mitigating effects of a transmitted blocker and distortions therefrom in a radio receiver |
| 06/05/2014 | US20140152391 Systems and methods for maintaining power amplifier performance |
| 06/05/2014 | US20140152390 Digital Bias Adjustment in a Variable Supply Radio Frequency Power Amplifier |
| 06/05/2014 | US20140152387 Semiconductor device and electronic apparatus using the same |
| 06/05/2014 | US20140152385 Bidirectional matching network |
| 06/05/2014 | DE102012222067A1 Electronic circuit for use in inverter used for controlling three-phase motor of e.g. electric vehicle, has first, second and third electronic components designed as resistors, and fourth electronic component designed as capacitor |
| 06/04/2014 | EP2738937A1 Pseudo-broadband Doherty amplifier and related capacitor circuit |
| 06/04/2014 | EP2737624A1 Multi-band peak power reduction |
| 06/04/2014 | CN203632622U 一种功放电路及其印刷电路板 One kind of amplifier circuits and printed circuit boards |
| 06/04/2014 | CN203632621U 一种使用CRLH-TL补偿线提高Doherty功放线性的电路 A method of using CRLH-TL compensation line increase Doherty power amplifier linearization circuit |
| 06/04/2014 | CN103843248A Radio frequency integrated circuit |
| 06/04/2014 | CN103840782A Circuit capable of preventing reversal of current of operational amplifiers connected in series through diode |
| 06/04/2014 | CN103840781A Circuit capable of preventing reversal of current of operational amplifiers connected in series |
| 06/04/2014 | CN103840778A Amplifier device with filtering and method |
| 06/04/2014 | CN103840777A Operational amplifier input port protective circuit |
| 06/04/2014 | CN103840776A Device for improving linearity degree of feedforward amplifier |
| 06/04/2014 | CN103840775A Limiting amplifier allowing direct-current offset eliminating function to be achieved on sheet |
| 06/04/2014 | CN103840774A Temperature compensation loop without increasing length |
| 06/04/2014 | CN103840773A Self-excitation suppression circuit with capacitive load operational amplifier |
| 06/04/2014 | CN103840772A Circuit for improving Doherty power amplifier linearity by using CRLH-TL compensating line |
| 06/04/2014 | CN102412790B Broadband low noise amplifier for compensating PVT (line-voltage variation) |
| 06/03/2014 | US8744783 System and method for measuring power generated during legged locomotion |
| 06/03/2014 | US8743518 Protection circuit |
| 06/03/2014 | US8742850 Method and apparatus for respectively calibrating a gain of a plurality of amplfiers of an amplfier circuit |
| 06/03/2014 | US8742849 Linear source follower amplifier |
| 06/03/2014 | US8742823 Driver output pad leakage current compensation |
| 05/30/2014 | WO2014080668A1 High frequency amplifier circuit |
| 05/30/2014 | WO2014080349A1 Systems and methods for band-limited adaptation for pa linearization |
| 05/30/2014 | WO2013063387A3 Inductance based parallel amplifier phase compensation |
| 05/29/2014 | US20140146918 Detection and Mitigation of an Abnormal Signal Condition Within a Power Amplifier (PA) |
| 05/29/2014 | US20140145791 Amplifier circuit |
| 05/29/2014 | US20140145788 Distortion compensation device and distortion compensation method |
| 05/29/2014 | US20140145786 System for amplifying a common rf energy signal and switching the amplified signal between one of two outputs |
| 05/29/2014 | US20140145785 Apparatus and methods for equalization |
| 05/28/2014 | EP2736166A1 Power combiner |
| 05/28/2014 | EP2736073A1 Cascode semiconductor device |
| 05/28/2014 | EP2735095A2 Amplifier arrangement |
| 05/28/2014 | CN203617973U 用于手持式数字示波表的低功耗宽带放大电路 Handheld Digital Oscilloscope for low-power broadband amplifier |
| 05/28/2014 | CN203617972U 一种高功率Ka频段的功率放大单片电路 A high-power Ka-band power amplifier monolithic |
| 05/28/2014 | CN103828230A 使用宽带变换器的宽带多尔蒂放大器 Broadband broadband Doherty amplifier converter |
| 05/28/2014 | CN103825566A 跨导放大器的高线性度优化方法 Transconductance amplifier, high linearity optimization methods |
| 05/28/2014 | CN103825564A 一种具有带通滤波响应的高效率宽带功率放大器 Having a band-pass filter response of high-efficiency wideband power amplifiers |
| 05/28/2014 | CN103825563A 功率放大器 PA |
| 05/28/2014 | CN103825562A 场效应管功率放大器及系统 FET amplifiers and systems |
| 05/28/2014 | CN103825560A 用于卫星音频的信号放大电路 For the satellite signal amplifying circuit of the audio |
| 05/28/2014 | CN103825559A 高速rcv偏置系统 High-speed rcv bias system |
| 05/28/2014 | CN103825558A 电子系统、功率放大器及其温度补偿方法 Electronic systems, power amplifiers and temperature compensation method |
| 05/28/2014 | CN103825557A 一种低功耗高线性度跨导放大器 A low-power high linearity transconductance amplifier |
| 05/28/2014 | CN102946234B 一种用于纱线张力检测的高精度放大电路 A high-precision detection amplifier circuit yarn tension |
| 05/28/2014 | CN102340283B 一种包络跟踪的方法及装置 One kind of envelope tracking method and apparatus |
| 05/28/2014 | CN102270966B 两级多尔蒂放大器 Two Doherty amplifier |
| 05/27/2014 | US8736368 Class E amplifier overload detection and prevention |
| 05/27/2014 | US8736366 CDMA/OFDM linearity compliant wireless communication amplifier |
| 05/27/2014 | US8736365 Broadband linearization module and method |
| 05/27/2014 | US8736363 Circuit for optimizing a power management system during varying load conditions |
| 05/22/2014 | WO2014078742A2 Adjustable gain for multi-stacked amplifiers |
| 05/22/2014 | WO2014078103A1 Supply transitions in an envelope tracked power amplifier |
| 05/22/2014 | WO2014076797A1 Variable output amplifier |
| 05/22/2014 | WO2014075736A1 Input amplitude modulated outphasing with an unmatched combiner |
| 05/22/2014 | WO2014075735A1 High efficiency high peak-to-average ratio broadband 3-way power amplifier |
| 05/22/2014 | US20140142458 Implantable monitoring device with selectable reference channel and optimized electrode placement |
| 05/22/2014 | US20140139292 System and method for power amplifier over-voltage protection |
| 05/22/2014 | US20140139291 Power amplifier |
| 05/22/2014 | US20140139290 System and method for pre-charging a current mirror |
| 05/22/2014 | US20140139287 Distortion compensating apparatus, transmitter, distortion compensating method, and transfer function calculating method |
| 05/22/2014 | US20140139286 Systems and methods for band-limited adaptation for pa linearization |
| 05/22/2014 | US20140139285 Chopper Amplifier |
| 05/22/2014 | US20140139042 Port isolation in shared transformers |
| 05/21/2014 | EP2733742A1 Amplifier circuit |
| 05/21/2014 | EP2732551A1 Signal predistortion for non-linear amplifier |
| 05/21/2014 | EP2732550A1 Broadband doherty amplifier using broadband transformer |
| 05/21/2014 | EP2732549A1 Amplifier linearization using non-standard feedback |
| 05/21/2014 | CN203608162U 一种谱仪放大器中的基线恢复电路 One kind of spectrometer amplifier baseline restoration circuit |