| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 01/13/2010 | EP2143200A1 Metal-oxide-semiconductor circuit designs and methods for operating same |
| 01/13/2010 | EP1573993B1 A method and system for broadband predistortion linearizaion |
| 01/13/2010 | CN201383865Y High-power switching power supply MOSFET audio power amplifier |
| 01/13/2010 | CN101627551A Digital convertible radio SNR optimization |
| 01/13/2010 | CN101627535A Frequency selective amplifier with wide-band impedance and noise matching |
| 01/13/2010 | CN101627534A Signal processor comprising a reference voltage circuit |
| 01/13/2010 | CN101626219A Miller compensation method for offsetting feedforward path |
| 01/13/2010 | CN100581050C Self zeroing method and device for critical, continuous-time applications |
| 01/12/2010 | US7647208 Signal processing method and apparatus |
| 01/12/2010 | US7647029 Controller-assisted method and controller-assisted device for determining a characteristic of a compensation member in a level control circuit |
| 01/12/2010 | US7646252 Amplifier for use in radio-frequency band |
| 01/12/2010 | US7646247 Ahuja compensation circuit for operational amplifier |
| 01/12/2010 | US7646246 Semiconductor device |
| 01/12/2010 | US7646240 Class D amplifier |
| 01/12/2010 | US7646238 Amplification apparatus |
| 01/07/2010 | WO2010001806A1 Power amplification device and power amplification method |
| 01/07/2010 | WO2010001357A1 A pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 01/07/2010 | WO2009138539A3 Positive peak detector |
| 01/07/2010 | WO2009114474A3 Combination offset voltage and bias current auto-zero circuit |
| 01/07/2010 | US20100001801 Intermodulation signal generator of power amplifier and pre-distortion linearizer having the same |
| 01/07/2010 | US20100001800 Bootstrapped class ab cmos output stage |
| 01/07/2010 | US20100001795 Baseband Predistortion Device And Method |
| 01/07/2010 | US20100001792 Low-noise DC Offset Calibration Circuit and Related Receiver Stage |
| 01/07/2010 | DE112008000511T5 Leistungsaddierer Power combiner |
| 01/06/2010 | EP2141801A2 Distortion compensating amplifier and front-end distortion compensation amplifying device |
| 01/06/2010 | EP2141800A1 Distortion compensation controller and distortion compensation control method |
| 01/06/2010 | EP2141799A1 High speed voltage following device for analog-to-digital conversion system. |
| 01/06/2010 | EP2141798A1 Amplifier apparatus |
| 01/06/2010 | CN201378826Y Stability-enhancing amplifier circuit |
| 01/06/2010 | CN101621280A Audio output device for preventing crackle |
| 01/06/2010 | CN100578932C Transmitting circuit, communication equipment, audio equipment, video equipment, and transmitting method |
| 01/06/2010 | CN100578925C Differential amplifier |
| 01/06/2010 | CN100578924C Processing method for output stage circuit, power amplification circuit and electrical signal |
| 01/06/2010 | CN100578923C Method for adjusting power amplification efficiency |
| 01/06/2010 | CN100578922C High efficiency power amplifier |
| 01/06/2010 | CN100578921C Bias controller, current modulator and method for controlling bias voltage signal |
| 01/06/2010 | CN100578920C Multiband doherty amplifier |
| 01/06/2010 | CN100578919C Amplifier unit and method of detecting failure in the same |
| 01/06/2010 | CN100578918C True logarithm amplifier |
| 01/06/2010 | CN100578917C Gain amplifier circuit that minimizes the miller effect |
| 01/05/2010 | US7643801 Clipping of transmission signal |
| 01/05/2010 | US7643264 Power supply controller and method for controlling power supply circuit |
| 01/05/2010 | US7643018 Twisted pair communications line system |
| 01/05/2010 | US7642855 Compensation of an amplifier comprising at least two gain stages |
| 01/05/2010 | US7642850 Feedforward linearization of RF power amplifiers |
| 01/05/2010 | US7642848 Variable gain amplifying apparatus and wireless communication apparatus |
| 01/05/2010 | US7642847 Power supply processing for power amplifiers |
| 01/05/2010 | US7642846 Apparatuses and methods for providing offset compensation for operational amplifier |
| 12/31/2009 | US20090322426 Output Short Circuit and Load Detection |
| 12/31/2009 | US20090322425 Distortion Compensating Amplifier And Front-End Distortion Compensation Amplifying Device |
| 12/31/2009 | US20090322424 Power amplifier with pre-distorter |
| 12/31/2009 | US20090322420 Feedback Biasing Technique For A Stage Of An Amplifier That Uses A Feedback Control Loop Having Low Gain |
| 12/31/2009 | US20090322419 Amplifying apparatus using magneto-resistive device |
| 12/30/2009 | WO2009111500A3 System and method of reducing power consumption for audio playback |
| 12/30/2009 | EP2137817A2 Application of signal advance amplification to analog waveform or signal detection, acquisition and processing |
| 12/30/2009 | EP2137815A2 Power supply providing ultrafast modulation of output voltage |
| 12/30/2009 | EP2137814A2 Power efficient multistage amplifier and design method |
| 12/30/2009 | EP2137589A1 Active guarding for reduction of resistive and capactive signal loading with adjustable control of compensation level |
| 12/30/2009 | CN201374680Y Audio power amplifier |
| 12/30/2009 | CN201374679Y Audio power amplifying circuit electrified from computer port |
| 12/30/2009 | CN101617469A Amplifier with integrated filter |
| 12/30/2009 | CN101615890A Method and device for processing digital pre-distortion |
| 12/30/2009 | CN100576831C Transmitting method and transmitting apparatus |
| 12/30/2009 | CN100576767C Feed forward amplifier for multiple frequency bands |
| 12/30/2009 | CN100576727C Stacked rf power amplifier |
| 12/30/2009 | CN100576724C Power series predistorter and control method thereof |
| 12/30/2009 | CN100576723C A method and apparatus for pre-conditioning an electrical signal |
| 12/30/2009 | CN100576722C Single-end input and dual-end output amplifier circuit and signal processing circuit |
| 12/29/2009 | US7640141 Systems and methods for gathering audience measurement data |
| 12/29/2009 | US7639759 Carrier to noise ratio estimations from a received signal |
| 12/29/2009 | US7639755 Distortion compensating apparatus |
| 12/29/2009 | US7639083 Compensation for parasitic coupling between RF or microwave transistors in the same package |
| 12/29/2009 | US7639077 Method and apparatus for pre-conditioning an electrical signal |
| 12/29/2009 | US7639075 Wide-band adjustable gain low-noise amplifier |
| 12/29/2009 | US7639074 Linear programmable switch-capacitance gain amplifier |
| 12/29/2009 | US7639073 Switched-capacitor amplifier with improved reset phase |
| 12/24/2009 | US20090316935 Digital microphone |
| 12/24/2009 | US20090315624 Active resistor used in a feedback amplifier particularly useful for proximity communication |
| 12/24/2009 | US20090315621 Amplifier with gain expansion stage |
| 12/24/2009 | US20090315620 Power amplifier |
| 12/23/2009 | WO2009155566A1 Amplifier with gain expansion stage |
| 12/23/2009 | WO2009155010A2 Rf power amplifiers with linearization |
| 12/23/2009 | WO2009153218A1 Double-linc switched-mode transmitter |
| 12/23/2009 | EP2136469A1 Method of high power amplifiers transfer function linearization by adaptively calculating main intermodulation products of radiofrequency harmonic cancellation |
| 12/23/2009 | EP2135350A2 Electronic circuit for the transmission of high-frequency signals |
| 12/23/2009 | EP1547278B1 Signal, interference and noise power measurement |
| 12/23/2009 | CN101611543A A delta-sigma modulation digital-analog converter, digital signal processing method, and AV device |
| 12/23/2009 | CN101610071A Preposed amplifier and method for correcting offset voltage of same |
| 12/23/2009 | CN101610070A Preposed amplifier and method for correcting offset voltage of same |
| 12/23/2009 | CN101610069A Power amplifier, power amplifying circuit and power amplifying method |
| 12/23/2009 | CN101610068A Circuit for reducing noise figure of amplifier |
| 12/23/2009 | CN100574306C Adaptive synchronization equipment and method |
| 12/23/2009 | CN100574117C Power supply circuit, portable communication hand-held machine and method for providing voltage for power amplifier of portable communication hand-held machine |
| 12/23/2009 | CN100574093C Digital audio amplifier, an audio system including the same, and a method of amplifying an audio signal |
| 12/22/2009 | US7636013 Method and integrated circuit including an amplifier calibration circuit |
| 12/22/2009 | CA2503530C Lower complexity layered modulation signal processor |
| 12/17/2009 | WO2009151097A1 Power amplifier and amplification method thereof, and radio wave transmitter using same |
| 12/17/2009 | WO2009122298A3 An efficient peak cancellation method for reducing the peak-to-average power ratio in wideband communication systems |
| 12/17/2009 | US20090309657 Predistortion Apparatus, System, And Method |
| 12/17/2009 | US20090309656 Multiple output power mode amplifier |