| 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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| 06/16/2011 | WO2011070483A2 Apparatus and method for pre-distorting and amplifying a signal |
| 06/16/2011 | WO2011069479A1 Limiting circuit |
| 06/16/2011 | WO2010151889A3 Rf single-ended to differential converter |
| 06/16/2011 | US20110143685 Multiband Low Noise Amplifier (LNA) With Parallel Resonant Feedback |
| 06/16/2011 | US20110140785 Cmos amplifier with integrated tunable band-pass function |
| 06/16/2011 | US20110140784 Amplifier Circuit |
| 06/16/2011 | US20110140781 Impedance matching circuit eliminating interference between signal lines and power amplifier having the same |
| 06/16/2011 | US20110140780 aparatus and a method for processing and amplifying a signal |
| 06/16/2011 | US20110140779 Apparatus and method for pre-distorting and amplifying a signal |
| 06/16/2011 | US20110140776 Variable frequency amplifier |
| 06/16/2011 | US20110140773 Circuits and Methods for Calibrating Offset in an Amplifier |
| 06/15/2011 | EP2333968A1 Transmitter arrangement for fragmented spectrum RF signals |
| 06/15/2011 | EP2332251A1 Pulse-width modulation with selective pulse-eliminator |
| 06/15/2011 | EP2127071B1 Error correction system for a class-d power stage |
| 06/15/2011 | CN201869168U UHF waveband multi-octave power amplifier |
| 06/15/2011 | CN201869166U Ultralow-temperature low-noise amplifier |
| 06/15/2011 | CN1949662B Amplifier arrangement for ultra-wideband applications, method and relevant device |
| 06/15/2011 | CN1894855B System and method for detection of amplitude limit and modification of signal |
| 06/15/2011 | CN1617440B Power amplification circuit |
| 06/15/2011 | CN102100000A Vswr compensation circuits for RF transmit chain |
| 06/15/2011 | CN102099999A Power amplifier, power amplifier nonlinear distortion correction method, and wireless communication device |
| 06/15/2011 | CN102098014A Complementary circularly-folded gain bootstrap transconductance operation amplifier with preamplifier |
| 06/15/2011 | CN102098009A Output match circuit of radio frequency (RF) power amplifier and design method thereof |
| 06/15/2011 | CN102098008A Doherty amplifier with composed transfer characteristic having multiple peak amplifiers |
| 06/15/2011 | CN102098007A Mismatch protection device for radio frequency (RF) amplifying circuit and method thereof |
| 06/15/2011 | CN102098006A Doherty amplifier |
| 06/14/2011 | US7961046 Distortion compensating amplifier and front-end distortion compensation amplifying device |
| 06/14/2011 | US7961045 Amplifier pre-distortion systems and methods |
| 06/14/2011 | US7961043 Single-ended amplifier |
| 06/14/2011 | US7961042 Amplifier circuit and magnetic sensor |
| 06/14/2011 | US7961041 System and method for generating a reference voltage |
| 06/09/2011 | WO2011067776A1 Circuit for compensating gain variation over operating frequency and/or temperature range |
| 06/09/2011 | WO2011066861A1 Power amplifier circuit and front end circuit |
| 06/09/2011 | US20110133835 Double transformer balun for maximum power amplifier power |
| 06/09/2011 | US20110133832 Digital amplifier with feedforward and feedback control |
| 06/08/2011 | EP2330735A2 Operational transconductance amplifier |
| 06/08/2011 | EP2330734A1 Power amplifier apparatus comprising digital delta-sigma modulation and a pulse with modulator and method thereof |
| 06/08/2011 | EP2329595A1 Techniques for improving balun loaded-q |
| 06/08/2011 | EP2329594A1 Low distortion cascode amplifier circuit |
| 06/08/2011 | EP2329593A1 High voltage regulated power supply |
| 06/08/2011 | EP2329592A1 Doherty amplifier with input network optimized for mmic |
| 06/08/2011 | EP2011231B1 Output networks in combination with chireix system |
| 06/08/2011 | CN201860296U HUB type audio frequency power amplifier with inbuilt USB (universal serial bus) sound card |
| 06/08/2011 | CN1823469B Amplifying circuit comprising an envelope modulated limit cycles modulator circuit |
| 06/08/2011 | CN1822492B Power amplifying apparatus using asymmetric power drive |
| 06/08/2011 | CN1768472B Digital amplifier |
| 06/08/2011 | CN1670858B Memory module |
| 06/08/2011 | CN1619950B Variable amplifier and mobile wireless terminal using same |
| 06/08/2011 | CN102089987A Communication device, distortion compensation circuit, and distortion compensation method |
| 06/08/2011 | CN102089967A Modulated supply stage with feedback to switched supply |
| 06/08/2011 | CN102089966A N-way DOHERTY distributed power amplifier |
| 06/08/2011 | CN102089671A Digital amplifier with feedforward and feedback control |
| 06/08/2011 | CN101599743B Baran impedance converter for radio frequency pull-push power amplifier |
| 06/08/2011 | CN101557203B Power amplifier with overcurrent protection |
| 06/08/2011 | CN101499777B Highly efficient power amplifier and implementing method thereof |
| 06/08/2011 | CN101425780B Low-noise wide-band amplifier circuit |
| 06/08/2011 | CN101320963B Power amplifier |
| 06/08/2011 | CN101174826B Power electronic switching circuit and its method for controlling and switching dead time |
| 06/08/2011 | CN101018040B Amplifier circuit |
| 06/07/2011 | US7957939 Maximum entropy signal detection method |
| 06/07/2011 | US7956682 Amplifier |
| 06/07/2011 | US7956680 Low-noise DC offset calibration circuit and related receiver stage |
| 06/07/2011 | US7956679 Differential amplifier with offset voltage trimming |
| 06/03/2011 | WO2011064787A1 Pop-up noise reduction in a device |
| 06/03/2011 | WO2011064786A1 Adaptive biasing of driver circuit |
| 06/03/2011 | WO2011064306A1 Parallel correction amplifier |
| 06/03/2011 | WO2011064202A1 Gain recovery in a bipolar transistor |
| 06/03/2011 | WO2011063536A1 Digital charge amplifier and method for converting charge signals into digital signals |
| 06/02/2011 | US20110128079 Multi-band power amplifier with high-frequency transformer |
| 06/02/2011 | US20110128076 Managing Power Supply Transients |
| 06/02/2011 | US20110128075 Audio amplifier and method for recognition an audio amplifier |
| 06/01/2011 | EP2327152A1 High-linearity low-noise receiver with load switching |
| 06/01/2011 | EP2327151A1 Adaptive digital predistortion of complex modulated waveform using peak and rms voltage feedback from the output of a power amplifier |
| 06/01/2011 | EP2327150A1 Predistortion linearizer with bridge topology having an equalizer stage for each bridge arm |
| 06/01/2011 | EP1425849B1 Calibration of an adaptive signal conditioning system |
| 06/01/2011 | CN201854197U Complementary synchronous rectifying and filtering power supply for high-fidelity audio-frequency amplifier |
| 06/01/2011 | CN1866728B Digital amplifier, pulse width modulator thereof and method for reducing pop noise for the same |
| 06/01/2011 | CN102082551A Audio-frequency playback system of parametric acoustic array and modulating method thereof |
| 06/01/2011 | CN102082550A Radio frequency silicon-on-insulator complementary metal oxide semiconductor low-noise amplifier |
| 06/01/2011 | CN101540588B Class d audio amplifier |
| 06/01/2011 | CN101459412B Full scale input-output operational amplifier |
| 06/01/2011 | CN101188404B Power amplifier using power synthesizer |
| 06/01/2011 | CN101013911B Control circuit of radio-frequency variable gain amplifier and gain control method |
| 05/31/2011 | US7953378 Predistortion circuit for a transmit system |
| 05/31/2011 | US7952431 Linearization circuits and methods for power amplification |
| 05/26/2011 | WO2011063358A2 Forward link signaling within a wireless power system |
| 05/26/2011 | WO2011063101A1 Chopper stabilized amplifier with filtering |
| 05/26/2011 | WO2011062604A1 Systems and methods for offset cancellation method for dc-coupled audio drives |
| 05/26/2011 | WO2011062039A1 Amplification device |
| 05/26/2011 | WO2011061637A1 System for reducing distortion in an electronic circuit using nonlinear feedback |
| 05/26/2011 | WO2011061025A1 Amplifier assembly having controlled return of power loss |
| 05/26/2011 | WO2011060740A1 Attenuator |
| 05/26/2011 | WO2011060706A1 Implementation method for power amplification circuit and power amplification apparatus |
| 05/26/2011 | WO2010099349A8 Low dissipation amplifier |
| 05/26/2011 | US20110123048 Class g audio amplifiers and associated methods of operation |
| 05/26/2011 | US20110121903 Power amplifier |
| 05/26/2011 | US20110121899 Power amplifier, non-linear distortion correcting method of power amplifier and radio communication device |
| 05/26/2011 | US20110121898 Wireless apparatus having shielding function |
| 05/26/2011 | US20110121897 Measurement and correction of residual nonlinearities in a digitally predistorted power amplifier |
| 05/26/2011 | US20110121894 Apparatus and method for power added efficiency optimization of high amplification applications |