| 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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| 07/13/2011 | CN102124303A Wireless telemetry electronic circuitry for measuring strain in high-temperature environments |
| 07/13/2011 | CN102122925A Constant transconductance operational amplifier and method for operation |
| 07/13/2011 | CN102122924A Variable gain amplifier |
| 07/13/2011 | CN102122921A Radio frequency low-noise amplifier |
| 07/13/2011 | CN102122920A Adaptive distributed type optical fiber temperature-measuring laser detection amplifier |
| 07/13/2011 | CN102122919A Self-correcting low-noise amplifier for off-chip discrete device |
| 07/13/2011 | CN102122918A Systems and methods to reduce idle channel current and noise floor in a PWM amplifier |
| 07/13/2011 | CN101409532B Mixed output stage circuit and correlation method |
| 07/13/2011 | CN101383592B Power amplifier and method for reducing common mode noise thereof |
| 07/13/2011 | CN101043202B High-frequency power amplifier |
| 07/12/2011 | US7979241 Optimized method for LID biosensor resonance detection |
| 07/12/2011 | US7978007 Feedback network for cascaded amplifiers |
| 07/07/2011 | WO2011080724A2 Power amplifier with feedback impedance for stable output |
| 07/07/2011 | WO2011079901A1 Circuit arrangement for the redundant current supply of a power amplifier |
| 07/07/2011 | US20110163810 Low distortion cascode amplifier circuit |
| 07/07/2011 | US20110163809 Push-pull output circuit |
| 07/07/2011 | US20110163806 Distortion compensation amplification device |
| 07/07/2011 | US20110163805 Time - Alignment of Two Signals Used for Digital Pre-Distortion |
| 07/07/2011 | US20110163804 Power Amplifier with Feedback Impedance for Stable Output |
| 07/07/2011 | US20110163803 Programmable Gain Amplifier and Embedded Filter |
| 07/07/2011 | US20110163802 Amplifier Arrangement and Method for Signal Amplification |
| 07/07/2011 | DE102005044710B4 Rückkopplungskorrektur für Schaltverstärker sowie eine Verwendung Feedback correction for amplifier and a use |
| 07/06/2011 | EP2341614A1 Linearization device for a power amplifier |
| 07/06/2011 | EP2341613A1 A detector for nonlinearities |
| 07/06/2011 | EP2341612A2 Amplifying apparatus |
| 07/06/2011 | EP2340612A1 Amplifier with gain expansion stage |
| 07/06/2011 | EP2052456B1 Integrator and error amplifier |
| 07/06/2011 | CN102119484A Power amplification device, and transmission device and communication device using same |
| 07/06/2011 | CN102119483A Techniques for improving balun loaded-Q |
| 07/06/2011 | CN102118334A Method and device for processing digital predistortion |
| 07/06/2011 | CN102118133A Matching circuit with stable network suitable for high-frequency high-power device |
| 07/06/2011 | CN102118132A Power amplifier and signal processing method |
| 07/06/2011 | CN101359898B Slew rate intensifier for dynamic CMOS operational amplifier |
| 07/06/2011 | CN101175393B Cooling device and method for acoustics equipment |
| 07/06/2011 | CN101098128B Single stage balanced valve amplifier |
| 07/05/2011 | US7974599 Low noise amplifier with constant input impedance |
| 07/05/2011 | US7973605 Three-stage frequency-compensated operational amplifier for driving large capacitive loads |
| 07/05/2011 | US7973601 Distortion compensation apparatus |
| 07/05/2011 | US7973600 Doherty power amplifier |
| 07/05/2011 | US7973598 Audio power amplifier and a pre-amplifier thereof |
| 07/05/2011 | US7973596 Low-noise, low-power, low drift offset correction in operational and instrumentation amplifiers |
| 07/04/2011 | WO2011040507A1 Power amplifier, wireless communicator and power amplification method |
| 06/30/2011 | WO2011078120A1 Rf signal generation circuit and wireless transmitter |
| 06/30/2011 | WO2011078095A1 Transmission circuit |
| 06/30/2011 | WO2011077616A1 Transmitting circuit and communication apparatus |
| 06/30/2011 | WO2011077615A1 Power amplifier circuit and communication apparatus |
| 06/30/2011 | WO2011077263A2 Cleaning apparatus |
| 06/30/2011 | WO2011077246A2 Multi-band wideband power amplifier digital predistortion system |
| 06/30/2011 | WO2011077212A1 Acoustic apparatus, acoustic system, and audio signal control method |
| 06/30/2011 | WO2011047352A3 Amplifier bias techniques |
| 06/30/2011 | WO2011028614A3 System and method for amplifying a signal using multiple amplification stages sharing a common bias current |
| 06/30/2011 | US20110156818 Method of using integrated power amplifier |
| 06/30/2011 | US20110156815 Modulation agnostic digital hybrid mode power amplifier system and method |
| 06/30/2011 | US20110156814 Method and apparatus for a power supply modulator linearizer |
| 06/30/2011 | DE102009060504A1 Schaltung und Verfahren zur Einstellung eines Offset-Ausgangsstroms für einen Eingangsstromverstärker Circuit and method for adjusting an offset output current for an input current amplifier |
| 06/29/2011 | EP2339763A1 Current detector |
| 06/29/2011 | EP2339747A1 Bias circuit for differential amplifier |
| 06/29/2011 | EP2339746A1 Doherty amplifier with composed transfer characteristic having multiple peak amplifiers |
| 06/29/2011 | EP2339745A1 Doherty amplifier |
| 06/29/2011 | EP1985012B1 Power amplifier |
| 06/29/2011 | EP1667331B1 Amplifier circuit and amplifying method |
| 06/29/2011 | CN201887723U Photoelectric conversion integrated preamplifier |
| 06/29/2011 | CN1914951B Output stage for a hearing aid, hearing aid and method of driving output tranducer of hearing aid |
| 06/29/2011 | CN102113208A Adaptive bias current generation for switched-capacitor circuits |
| 06/29/2011 | CN102113207A Doherty amplifier with input network optimized for MMIC |
| 06/29/2011 | CN102111114A Design method for reverse class-F power amplifier based on 3/4 spiral virtual ground structure |
| 06/29/2011 | CN102111111A Single-chip low-noise amplifier using resistor to perform coupling and matching |
| 06/29/2011 | CN101603992B Method for establishing output power comparison table of power amplifier |
| 06/29/2011 | CN101567519B Large-current pulse LD laser driving power supply |
| 06/29/2011 | CN101174507B Low-loss adjustable ferroelectric device and its characterization method |
| 06/28/2011 | US7971122 Method of computing partial CRCS |
| 06/23/2011 | WO2011014849A3 Bias current monitor and control mechanism for amplifiers |
| 06/23/2011 | US20110148527 Dual-Loop Feedback Amplifying Circuit |
| 06/23/2011 | US20110148520 System and a method for signal processing |
| 06/22/2011 | EP2337218A2 Method, RF module and test method for enabling a power amplifier to support multiple power levels |
| 06/22/2011 | EP2335351A1 Excitation stage for high frequency generator |
| 06/22/2011 | EP2335350A1 Network for controlling the power supply to a system of active elements |
| 06/22/2011 | EP2335089A1 A re-configurable amplifier |
| 06/22/2011 | EP1502362B1 System and method for eliminating signal zero crossings in single and multiple channel communication systems |
| 06/22/2011 | CN201878098U Volterra-level based indirect learning type pre-distortion linearization system |
| 06/22/2011 | CN201878097U Power amplification grid voltage temperature compensation circuit and radiofrequency power amplifier |
| 06/22/2011 | CN201878096U Preamplifier circuit of program-controlled digital tandem exchange |
| 06/22/2011 | CN1518220B Band-pass filter of changable and tunable with optimum frequency response |
| 06/22/2011 | CN102106081A Driver amplifier having a programmable output impedance adjustment circuit |
| 06/22/2011 | CN102106080A Liquid crystal driving apparatus |
| 06/22/2011 | CN102106079A Distortion compensation amplification device |
| 06/22/2011 | CN102106078A Power amplification device, and transmission device and communication device both using thereof |
| 06/22/2011 | CN102104366A Power amplifying device for TDD communication system |
| 06/22/2011 | CN102104365A Power amplifying circuit, DC-DC converter, peak holding circuit, and output voltage control circuit including the peak holding circuit |
| 06/22/2011 | CN101304236B Variable bias control for switch mode RF amplifier |
| 06/22/2011 | CN101227174B Broad band charge amplifier and design method thereof |
| 06/21/2011 | US7965141 Class D audio amplifier |
| 06/21/2011 | CA2479684C System and method for eliminating signal zero crossings in single and multiple channel communication systems |
| 06/16/2011 | WO2011072028A1 Low output impedance rf amplifier |
| 06/16/2011 | WO2011071836A1 Circuits and methods for calibrating offset in an amplifier |
| 06/16/2011 | WO2011071573A2 Amplifiers with depletion and enhancement mode thin film transistors and related methods |
| 06/16/2011 | WO2011070952A1 Transmission device |
| 06/16/2011 | WO2011070732A1 Transmission power control method and transmission power control device |
| 06/16/2011 | WO2011070731A1 Transmission power control method and transmission power control device |
| 06/16/2011 | WO2011070497A1 An apparatus and a method for processing and amplifying a signal |