| 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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| 09/04/2013 | CN203180826U Amplifier circuit based on field-effect tube |
| 09/04/2013 | CN103281274A Digital predistortion measurement system and power value calibration measurement method thereof |
| 09/04/2013 | CN103281041A Collected signal preprocessor of air conditioner control subsystem in transformer substation |
| 09/04/2013 | CN103281038A Wideband low noise amplifier |
| 09/04/2013 | CN102204086B Headphone amplifier circuit and power supply method, and portable electronic device |
| 09/04/2013 | CN102075148B Over-temperature protection circuit for radio frequency power amplifier |
| 09/03/2013 | US8525592 Power amplification device, transmitter, and power amplification control method |
| 09/03/2013 | US8525590 Power amplifier control circuit |
| 09/03/2013 | US8525589 Pop sound reduction circuit and audio circuit having such pop reduction circuit for use in audio amplifier |
| 09/03/2013 | US8525586 Gain stage with DC offset compensation and method thereof |
| 08/29/2013 | WO2013126610A1 Adjustable bypass circuit for a supply voltage for an amplifier |
| 08/29/2013 | WO2013123669A1 Feed-forward amplifier device and method thereof |
| 08/29/2013 | US20130222063 Method and Apparatus for Efficient and Distortion Compensated Digital Class-D Amplifier Ternary Modulation Scheme |
| 08/29/2013 | US20130222061 Multi-octave power amplifier |
| 08/29/2013 | US20130222060 Mutually coupled matching network |
| 08/29/2013 | US20130222059 Fir/iir filter predistorter for power amplifiers exhibiting short-term and/or long-term memory effects |
| 08/29/2013 | US20130222055 Feedback Control And Coherency Of Multiple Power Supplies In Radio Frequency Power Delivery Systems For Pulsed Mode Schemes in Thin Film Processing |
| 08/29/2013 | DE19581856B3 Temperaturkompensation für Bauteile von integrierten Schaltungen auf der Halbleiterplättchen-Stufe Temperature compensation for components of integrated circuits on the wafer stage |
| 08/29/2013 | DE102012203026A1 Hochfrequenzsender RF transmitter |
| 08/28/2013 | EP2632045A1 Feedback control and coherency of multiple power supplies in radio frequency power delivery systems for pulsed mode schemes in thin film processing |
| 08/28/2013 | CN203166834U Digital power amplification circuit with switching power supply |
| 08/28/2013 | CN103270695A Amplifier circuit and wireless communication device |
| 08/28/2013 | CN103270465A Accurate bias tracking for process variation and supply modulation |
| 08/28/2013 | CN103269203A Biasing circuit of operational amplifier |
| 08/28/2013 | CN102332868B Low-power-consumption wideband low-noise amplifier |
| 08/28/2013 | CN102270968B Off-chip harmonic wave absorbing circuit |
| 08/28/2013 | CN102265506B Doherty circuit, n-way doherty circuit and base station equipment |
| 08/28/2013 | CN102142812B Doherty power amplifier |
| 08/28/2013 | CN102118133B Matching circuit with stable network suitable for high-frequency high-power device |
| 08/27/2013 | US8519790 Power amplifier linearization using cancellation-based feed forward methods and systems |
| 08/27/2013 | US8519789 Pre-distortion for fast power transient waveforms |
| 08/27/2013 | US8519786 Variable gain amplifier with fixed bandwidth |
| 08/22/2013 | WO2013123074A1 Amplifier with reduced source degeneration inductance |
| 08/22/2013 | WO2013122701A1 Monobit receiver spurious harmonics control method and system |
| 08/22/2013 | WO2013121308A1 Method and apparatus for predistorting a signal |
| 08/22/2013 | US20130214862 Adjustable bypass circuit for a supply voltage for an amplifier |
| 08/22/2013 | US20130214861 Baseband-derived rf digital predistortion |
| 08/22/2013 | US20130214860 Cdma/ofdm linearity compliant wireless communication amplifier |
| 08/22/2013 | US20130214856 Switching amplifier system and method for suppressing signal distortion thereof |
| 08/21/2013 | EP2629416A2 Envelope tracking amplifier |
| 08/21/2013 | CN203151436U Stereophonic high-fidelity disc and prime amplifier |
| 08/21/2013 | CN203151434U Power amplifier protective circuit |
| 08/21/2013 | CN203151433U Double-frequency synchronous power amplifier based on T-type network and coupling line |
| 08/21/2013 | CN103259496A Closed-loop negative-feedback modulation and demodulation switch power amplifier |
| 08/21/2013 | CN103259495A Switching amplifier system and method for suppressing signal distortion thereof |
| 08/21/2013 | CN103259494A Power amplifier |
| 08/21/2013 | CN103259493A Method for realizing low power consumption switch amplifying circuit by utilizing asymmetric capacitors |
| 08/21/2013 | CN103259492A Video driver output amplifier circuit |
| 08/21/2013 | CN101997490B Constant gain time amplifier adopting digital calibration technology |
| 08/21/2013 | CN101669280B Power supply providing ultrafast modulation of output voltage |
| 08/21/2013 | CN101262262B Power amplifier circuit, control method thereof and control program thereof |
| 08/20/2013 | US8514157 Differential amplifier |
| 08/20/2013 | US8514020 Temperature compensated feedforward linearizer |
| 08/20/2013 | US8514019 Distortion compensation amplifier |
| 08/20/2013 | US8514018 Signal alignment for envelope tracking system |
| 08/20/2013 | US8514015 Amplifier with programmable off voltage |
| 08/20/2013 | US8514014 Reset and resettable circuits |
| 08/20/2013 | US8514011 Impedance transformation with transistor circuits |
| 08/15/2013 | WO2013120072A1 Linc transmitter with improved efficiency |
| 08/15/2013 | WO2013119587A1 Apparatus and methods for envelope tracking |
| 08/15/2013 | WO2013119464A1 Apparatus and methods for reducing output noise of a signal channel |
| 08/15/2013 | WO2013093862A3 Architecture of a low bandwidth predistortion system for non-linear rf components |
| 08/15/2013 | WO2013090846A3 Waveform shaping for audio amplifiers |
| 08/15/2013 | WO2013050493A3 Envelope tracking push-pull or differential power amplifier |
| 08/15/2013 | US20130207732 Amplifier with reduced source degeneration inductance |
| 08/15/2013 | US20130207731 Apparatus and methods for envelope tracking |
| 08/15/2013 | US20130207727 Apparatus and methods for reducing output noise of a signal channel |
| 08/14/2013 | EP2625788A1 Wireless transceiver with amplifier bias adjusted based on modulation scheme and transmit power feedback |
| 08/14/2013 | EP2625786A1 Impedance -matching circuits for multi - output power supplies driving c02 gas -discharge lasers |
| 08/14/2013 | EP2625785A1 Signal processing arrangement and signal processing method |
| 08/14/2013 | CN203136142U Loudspeaker protective circuit |
| 08/14/2013 | CN203135798U Nonlinear power amplifier |
| 08/14/2013 | CN203135797U Single-chip low-noise amplifier |
| 08/14/2013 | CN203135796U Class D denoising circuit |
| 08/14/2013 | CN203135795U Microwave low-noise amplifier |
| 08/14/2013 | CN103248327A Low-noise front-arranged compensation circuit of sigma-delta closed loop accelerometer interface circuit |
| 08/14/2013 | CN103248326A Output stage circuit of power amplifier |
| 08/14/2013 | CN103248325A Power amplifier |
| 08/14/2013 | CN103248324A High-linearity low-noise amplifier |
| 08/14/2013 | CN101752644B Antenna amplifier |
| 08/13/2013 | US8510082 Optimized method for LID biosensor resonance detection |
| 08/13/2013 | US8510066 Self-calibrating voltage sensor |
| 08/13/2013 | US8509707 Wireless communications device, gaming controller and integrated circuits with millimeter wave transceiver and methods for use therewith |
| 08/13/2013 | US8509629 High sensitivity two-stage amplifier |
| 08/13/2013 | US8508302 Electronic circuit |
| 08/13/2013 | US8508294 Power amplifier with feedback impedance for stable output |
| 08/08/2013 | WO2013116427A1 Method and apparatus to independently control front end gain and baseband gain |
| 08/08/2013 | WO2013113637A1 Noise canceling low-noise amplifier |
| 08/08/2013 | WO2013113636A2 Low-noise amplifier |
| 08/08/2013 | WO2013066466A3 Low voltage high efficiency gallium arsenide power amplifier |
| 08/08/2013 | US20130200951 Selective Narrowband Feedback for a Digital Predistorter |
| 08/08/2013 | US20130200950 Predistortion of concurrent multi-band signal to compensate for pa non-linearity |
| 08/08/2013 | US20130200948 Digital pre-distortion device and method for a broadband power amplifier |
| 08/08/2013 | DE102008016154B4 Verfahren zur Kompensation von Verstärkungsänderungen bei einer Verstärkerschaltung A method for compensating for changes in gain of an amplifier circuit |
| 08/07/2013 | EP2624448A1 Low-noise amplifier |
| 08/07/2013 | EP2624447A1 Noise canceling low-noise amplifier |
| 08/07/2013 | EP2624446A1 Doherty amplifier device |
| 08/07/2013 | EP2622746A1 Reducing non-linearities in a differential receiver path prior to a mixer using calibration |
| 08/07/2013 | EP2622736A1 Dutycycle adjustment to improve efficiency of a digital rf-pa |
| 08/07/2013 | EP2622735A1 Current saving by reduced modulation code and selective gating of rf signal buffers |