| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 04/25/2012 | CN1819717B Three-level magnetic pole lound speaker and its playing and controlling circuit |
| 04/25/2012 | CN1819713B High-acoustics louderspeaker with electromagnetic energy converting into acoustic energy effectively, its playing and controlling circuit for mobile communication apparatus |
| 04/25/2012 | CN1812660B Hand-free double-directional loudspeaker for receiver of small telephone and power amplification and control circuit thereof |
| 04/25/2012 | CN1812657B Double-voice coil type loudspeaker and power amplification control circuit |
| 04/25/2012 | CN1812654B Internal magnetic inner moving-coil type receiver hand-free loudspeaker and power amplification control circuit |
| 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 | CN102428646A 数字混合放大器的校准和补偿方法 Calibration and compensation method digital hybrid amplifier |
| 04/25/2012 | CN102428645A Transimpedance amplifier with distributed control of feedback line |
| 04/25/2012 | CN102428604A Circuits And Methods Combining Signal Power |
| 04/25/2012 | CN102427339A 一种输出功率可调的功率放大器 An output power adjustable amplifier |
| 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 | CN101908868B 一种输入和参考电压幅度为轨至轨的cmos比较器 An input and the reference voltage amplitude for rail-to-rail cmos comparator |
| 04/25/2012 | CN101136618B Tunable ferro-electric filter |
| 04/24/2012 | US8165478 Optical receiver |
| 04/24/2012 | US8164396 Harmonic processing circuit and amplifying circuit using the same |
| 04/24/2012 | US8164388 Amplifying apparatus |
| 04/24/2012 | US8164387 Simultaneous harmonic termination in a push-pull power amplifier |
| 04/24/2012 | US8164386 Methods and apparatus to control rail-to-rail class AB amplifiers |
| 04/24/2012 | US8164385 Amplifier circuit |
| 04/24/2012 | US8164384 Asymmetric multilevel outphasing architecture for RF amplifiers |
| 04/24/2012 | US8164382 Concept, method and apparatus of improved distortion switched-mode amplifier |
| 04/24/2012 | US8164381 Open-loop line driver control method and apparatus |
| 04/19/2012 | WO2012050941A2 Systems and methods for high-sensitivity detection of input bias current |
| 04/19/2012 | WO2012048976A1 Drive device for a medical pump having a stepper motor |
| 04/19/2012 | WO2012048461A1 Switching power amplifier for sampling and holding analog signals |
| 04/19/2012 | WO2012048432A1 Device for cooling high power broadcast transmitters |
| 04/19/2012 | WO2012027703A3 Tunable radio front end and methods |
| 04/19/2012 | US20120092076 Package-based filtering and matching solutions |
| 04/19/2012 | US20120092075 Power amplification systems and methods |
| 04/19/2012 | US20120092074 Apparatus and method for a switched capacitor architecure for multi-band doherty power amplifiers |
| 04/19/2012 | US20120092073 Trans-impedance amplifier for optical receiver |
| 04/19/2012 | US20120092072 Offset compensation for sense amplifiers |
| 04/19/2012 | US20120092071 Class-ab output stage |
| 04/19/2012 | US20120092070 Acoustic pseudo-triode characteristic amplification device and acoustic pseudo-triode characteristic push-pull amplification device |
| 04/19/2012 | US20120092069 Circuit with High-Density Capacitors Using Bootstrapped Non-Metal Layer |
| 04/19/2012 | US20120092068 Fringe Capacitor Using Bootstrapped Non-Metal Layer |
| 04/19/2012 | US20120091322 Photoelectric conversion device |
| 04/19/2012 | DE102011054423A1 Akustische pseudo-triodencharakteristik-verstärkungsvorrichtung und akustische pseudo-triodencharakteristik-push-pull-verstärkungsvorrichtung Acoustic pseudo-triodencharakteristik-gain device and acoustic pseudo-triodencharakteristik-push-pull amplification device |
| 04/19/2012 | DE102008062308B4 Leistungsverstärker Power amplifier |
| 04/19/2012 | DE102004063722B4 Schaltung zur Reduzierung von Intermodulation zweiter Ordnung und Direktwandlungsempfänger Circuit for reducing second order intermodulation and direct conversion receiver |
| 04/18/2012 | EP2442444A1 High power Doherty amplifier using multi-stage modules |
| 04/18/2012 | EP2442443A1 Multi-channel biopotential signal acquisition systems |
| 04/18/2012 | EP2442442A1 Power amplifier and transmitter |
| 04/18/2012 | EP2441169A1 Distributed power amplifier with active matching |
| 04/18/2012 | EP2127069B1 Linear transconductor for rf communications |
| 04/18/2012 | CN202197251U 一种功率放大系统 A power amplifier system |
| 04/18/2012 | CN202197250U 一种功率放大器底板及功率放大器 A power amplifier and power amplifier chassis |
| 04/18/2012 | CN102422530A 多位d类功率放大器系统 Many d class amplifier system |
| 04/18/2012 | CN102422529A 可切换输入对操作放大器 The operator can switch the input amplifier |
| 04/18/2012 | CN102422528A RF amplifier with digital filter for polar transmitter |
| 04/18/2012 | CN102422527A 用于发射机的电路 For the transmitter circuit |
| 04/18/2012 | CN102420631A Power amplification apparatus, multi-mode radio frequency transmitting-receiving apparatus and multi-mode terminal |
| 04/18/2012 | CN102420623A 电源信号与收音机射频信号的传输方法及天线放大器 Power signal transmission method and radio RF signals and antenna amplifier |
| 04/18/2012 | CN102420577A 多路抗干扰低噪声电荷灵敏前置放大器 Multiple interference low noise charge sensitive preamplifier |
| 04/18/2012 | CN102420576A Audio operational amplification circuit structure and audio output circuit structure |
| 04/18/2012 | CN102420575A 一种误差放大器 An Error Amplifier |
| 04/18/2012 | CN102420574A 一种提高共源极运算放大器频率特性的方法 A total of pole improve the frequency characteristics of the operational amplifier method source |
| 04/18/2012 | CN102420573A Setting method for amplifying cluster communication power and power amplifier |
| 04/18/2012 | CN101517892B 高次谐波处理电路以及使用了它的放大电路 Higher harmonic processing circuit, and an amplifying circuit using it |
| 04/18/2012 | CN101485081B Rf功率放大器 Rf power amplifier |
| 04/18/2012 | CN101432964B 运算放大器 Operational Amplifiers |
| 04/18/2012 | CN101379698B 用于提高数字放大器中的反馈和/或前馈子系统的稳定性的系统和方法 For improving the digital feedback amplifier and / or the stability of the system and method of pre-fed subsystem |
| 04/18/2012 | CN101329587B 电压调节器 Voltage Regulator |
| 04/18/2012 | CN101325403B 射频信号放大装置 Radio signal amplifying means |
| 04/18/2012 | CN101237269B Tdd系统中实现单路射频双向放大的方法 Tdd system way to achieve bi-amplified single-channel RF |
| 04/18/2012 | CN101047361B 电压电平移位电路和半导体集成电路 Voltage level shift circuit and a semiconductor integrated circuit |
| 04/18/2012 | CN101005271B 嵌套互阻抗放大器 Nested transimpedance amplifier |
| 04/18/2012 | CN101005270B 嵌套互阻抗放大器 Nested transimpedance amplifier |
| 04/17/2012 | US8159305 Amplifying device |
| 04/17/2012 | US8159304 Apparatus and method for feed-forwarding in a current-feedback amplifier |
| 04/17/2012 | US8159303 Operational amplifier |
| 04/17/2012 | US8159302 Differential amplifier circuit |
| 04/17/2012 | US8159301 Differential amplifier with hysteresis |
| 04/17/2012 | US8159300 Signal conversion circuit and rail-to-rail circuit |
| 04/17/2012 | US8159299 Duplicate feedback network in class D amplifiers |
| 04/17/2012 | US8159296 Method and apparatus for a power supply modulator linearizer |
| 04/17/2012 | US8159295 Supply-modulated RF power amplifier and RF amplification methods |
| 04/17/2012 | US8159292 Amplifying circuit |
| 04/17/2012 | US8159287 Transistor device and method |
| 04/12/2012 | WO2012047533A1 Impedance -matching circuits for multi - output power supplies driving c02 gas -discharge lasers |
| 04/12/2012 | WO2012046668A1 Power amplifier, high-frequency power amplifying device, and amplification control method |
| 04/12/2012 | WO2012046561A1 Linearizer and distortion compensation method |
| 04/12/2012 | WO2012023624A4 Chireix power amplification method and transmitter using envelope-tracking power supply |
| 04/12/2012 | WO2012004702A3 Broadband transistor bias network |
| 04/12/2012 | US20120086514 Mems oscillator |
| 04/12/2012 | US20120086513 Instrumentation input systems |
| 04/12/2012 | US20120086511 Distributed power amplifier with active matching |
| 04/12/2012 | US20120086510 Common-mode feedback amplifier |
| 04/12/2012 | US20120086509 Amplifier Input Stage and Slew Boost Circuit |
| 04/12/2012 | US20120086508 Circuit for thermal protection in audio power amplifier and method thereof |
| 04/12/2012 | US20120086488 Differential amplifiers, clock generator circuits, delay lines and methods |
| 04/12/2012 | US20120086448 Amplifying driving unit using giant magneto resistance sensor and diagnosis device using the same |
| 04/12/2012 | US20120086062 Switching power supply device and a semiconductor integrated circuit |
| 04/12/2012 | DE19858078B4 Signalverstärkerschaltung mit symmetrischen Ein- und Ausgängen Signal amplifier circuit with balanced inputs and outputs |
| 04/12/2012 | DE102010047653A1 Class B high frequency transmitter for class B amplifier, comprises voltage supply pole which is connected with active element in fixed manner, where another voltage supply pole is supplied over direct current conductive inductive network |
| 04/12/2012 | DE102005048409B4 Verstärkeranordnung für Ultra-Breitband-Anwendungen und Verfahren Amplifier arrangement for ultra-wideband applications and processes |
| 04/12/2012 | DE102005036100B4 Verstärkeranordnung und Verfahren zum Verstärken einer Spannung An amplifier arrangement and method for amplifying a voltage |
| 04/11/2012 | EP2439988A1 Optimizing power consumption of a base station |
| 04/11/2012 | EP2439987A1 Circuit and method for reducing radio-frequency power consumption of mobile phone |
| 04/11/2012 | CN102414985A 无线通信装置和具有其功率放大器的半导体封装装置 The wireless communication device and a semiconductor package having a power amplifier device which |