| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 04/04/2013 | DE102011114502A1 Method for performing dynamic capacitive measurement at differential capacitor based on delta-sigma principle, involves applying excitation voltages between electrodes, such that it have no effect on charges |
| 04/04/2013 | DE102011083912A1 Schaltung und leistungsverstärker Circuit and power amplifier |
| 04/03/2013 | EP2575309A1 A method for pulse width modulation, and a transmitter therefor |
| 04/03/2013 | EP2360775B1 Transmission line, impedance transformer, integrated circuit mounted device, and communication device module |
| 04/03/2013 | CN202856739U Photoelectric detector |
| 04/03/2013 | CN202856695U Power amplifier of train broadcast machine |
| 04/03/2013 | CN202856694U Prime amplifier used for broadcasting system of railway station |
| 04/03/2013 | CN202856693U Power amplifying circuit of underground nuclear magnetic resonance logging instrument |
| 04/03/2013 | CN202856691U Control protection circuit of solid state microwave power amplifier |
| 04/03/2013 | CN103026618A Amplifier |
| 04/03/2013 | CN103023446A 运算放大器电路结构 The operational amplifier circuit configuration |
| 04/03/2013 | CN103023445A Differential analog front end device used for low-frequency signal detection and transmission system |
| 04/03/2013 | CN103023444A Transimpedance amplifier and method for converting current into voltage |
| 04/03/2013 | CN103023441A Bandwidth regulating method for radio frequency power amplifier and radio frequency power amplifier |
| 04/03/2013 | CN103023314A Buck-boost switching power supply and controller thereof |
| 04/03/2013 | CN103022122A Compound semiconductor device and method of manufacturing the same |
| 04/03/2013 | CN103022119A Semiconductor device |
| 04/03/2013 | CN103022117A Compound semiconductor device and method of manufacturing the same |
| 04/03/2013 | CN103022116A Compound semiconductor device and method of manufacturing the same |
| 04/03/2013 | CN103022105A Semiconductor device and method for manufacturing semiconductor device |
| 04/03/2013 | CN102176661B Chopping stabilized rail-to-rail amplifier with broadband and low-power consumption based on MOS (metal oxide semiconductor) device |
| 04/03/2013 | CN102075152B Linear source follower |
| 04/03/2013 | CN101951231B Power synthesis technology device of low-frequency amplifier |
| 04/03/2013 | CN101807887B Class d amplifier |
| 04/03/2013 | CN101741322B Power amplifiers with discrete power control |
| 04/03/2013 | CN101661937B 半导体器件及其制造方法 Semiconductor device and manufacturing method thereof |
| 04/03/2013 | CN101494441B Wideband low noise amplifier |
| 04/03/2013 | CN101350596B Delay modulator pre-distortion circuit for an amplifier |
| 04/03/2013 | CN101290739B Deviation eliminating device, IC chip and drive IC |
| 04/02/2013 | US8411879 Speaker driver circuit driven by positive and negative voltages |
| 04/02/2013 | US8410856 Method and apparatus for canceling balun amplifier noise |
| 04/02/2013 | US8410855 Method and apparatus for controlling power supply of audio amplifier |
| 04/02/2013 | US8410854 Semiconductor integrated circuit device |
| 04/02/2013 | US8410853 Inductive circuit arrangement |
| 04/02/2013 | US8410852 Drive amplifier |
| 04/02/2013 | US8410851 Switching amplifier with an inductor |
| 04/02/2013 | US8410849 Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments |
| 04/02/2013 | US8410848 Enhanced doherty amplifier with asymmetrical semiconductors |
| 04/02/2013 | US8410847 Input common mode voltage compensation circuit |
| 04/02/2013 | US8410845 Switching power amplifier and method of controlling the same |
| 04/02/2013 | US8410823 Method and system for an LC resonant current gain boosting amplifier |
| 03/28/2013 | WO2013043957A2 Method and apparatus of minimizing extrinsic parasitic resistance in 60ghz power amplifier circuits |
| 03/28/2013 | WO2013043954A2 A high performance divider using feed forward, clock amplification and series peaking inductors |
| 03/28/2013 | WO2013043950A1 A DIFFERENTIAL SOURCE FOLLOWER HAVING 6dB GAIN WITH APPLICATIONS TO WiGig BASEBAND FILTERS |
| 03/28/2013 | WO2013042754A1 Electric power amplification device |
| 03/28/2013 | WO2013042583A1 Optical power monitoring device, method, and program |
| 03/28/2013 | WO2012170582A3 Switched-capacitor dc blocking amplifier |
| 03/28/2013 | US20130077806 Amplifier apparatus |
| 03/28/2013 | US20130076448 Power amplifier |
| 03/28/2013 | US20130076447 Power amplifier module having bias circuit |
| 03/28/2013 | US20130076446 Rf device with compensatory resonator matching topology |
| 03/28/2013 | US20130076445 Power amplifying apparatus with dual-current control mode |
| 03/28/2013 | US20130076443 Compound semiconductor device and method of manufacturing the same |
| 03/28/2013 | US20130076442 Compound semiconductor device and method of manufacturing the same |
| 03/28/2013 | US20130076441 High-frequency amplifier |
| 03/28/2013 | US20130076440 Operational amplifier circuit structure |
| 03/28/2013 | US20130076439 Limiting Amplifier And Method Thereof |
| 03/28/2013 | US20130076438 Current Efficient Mixer Architecture |
| 03/28/2013 | US20130076435 Amplifying system |
| 03/28/2013 | US20130076434 Differential Source Follower having 6dB Gain with Applications to WiGig Baseband Filters |
| 03/28/2013 | US20130076408 High Performance Divider Using Feed Forward, Clock Amplification and Series Peaking Inductors |
| 03/28/2013 | US20130075608 Image sensor and x-ray image sensing module including the same |
| 03/28/2013 | US20130075594 Photodetector and method for driving photodetector |
| 03/27/2013 | EP2573938A1 A method for signal amplification based on pulse width modulation |
| 03/27/2013 | EP2572450A1 High power gallium nitride field effect transistor switches |
| 03/27/2013 | EP2572449A2 Multi-band high-efficiency doherty amplifier |
| 03/27/2013 | CN202841131U Multi-carrier power amplifier based on DPD technology |
| 03/27/2013 | CN202841065U Power amplification device |
| 03/27/2013 | CN202841064U D-type power amplifier |
| 03/27/2013 | CN202841063U D-class power amplifier chip |
| 03/27/2013 | CN202841062U Transmission line structure of low loss power amplifier |
| 03/27/2013 | CN202841061U Modularized feed-forward power amplifier |
| 03/27/2013 | CN202841060U Quasi-linear stereo audio frequency amplifier with direct current vacuum tube |
| 03/27/2013 | CN202841059U Clamp circuit and AB amplifier circuit |
| 03/27/2013 | CN103004083A Very high fidelity audio amplifier |
| 03/27/2013 | CN103001608A Precision triangle waveform generator |
| 03/27/2013 | CN103001596A Gain programmable fully-differential amplifier with output common-mode imbalance correction |
| 03/27/2013 | CN103001595A 高速放大器 High Speed Amplifier |
| 03/27/2013 | CN103001594A Amplifying circuit |
| 03/27/2013 | CN103001593A Power amplification circuit used for Bluetooth communication circuit |
| 03/27/2013 | CN103001592A Transimpedance amplifier |
| 03/27/2013 | CN103001589A Photoelectric signal conversion and amplification device |
| 03/27/2013 | CN103000683A Compound semiconductor device and method of manufacutring the same |
| 03/27/2013 | CN101944886B Adaptive micro-current amplifier |
| 03/27/2013 | CN101809864B Power amplifying circuit, and transmitter and wireless communication device using the same |
| 03/27/2013 | CN101702618B Gain control of radio frequency linear power amplifier |
| 03/27/2013 | CN101682304B Multiport amplifiers in communications satellites |
| 03/27/2013 | CN101647196B Differential amplifier with active post-distortion linearization |
| 03/27/2013 | CN101431313B Amplifying circuit and method for improving linearity by using grid non-linear capacitor |
| 03/26/2013 | US8406634 Method and apparatus for optical signaling |
| 03/26/2013 | US8405461 Light receiving circuit with differential output |
| 03/26/2013 | US8405460 Circuitry for biasing amplifiers |
| 03/26/2013 | US8405459 Folded cascode differential amplifier and semiconductor device |
| 03/26/2013 | US8405458 Current mirror with low headroom and linear response |
| 03/21/2013 | WO2013040505A1 Circuitry for reducing power consumption |
| 03/21/2013 | WO2013039607A1 Apparatus and methods for adaptive common mode level shifting |
| 03/21/2013 | WO2013039282A1 Triple band amplifier using triplexer |
| 03/21/2013 | WO2013039030A1 Power amplifier, and method for operating same |
| 03/21/2013 | WO2013016575A3 Low variation current multiplier |
| 03/21/2013 | WO2013009640A3 Signal path termination |