| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 04/18/2013 | US20130093494 Differential current buffer |
| 04/18/2013 | DE102012216840A1 HF-Bauelement mit Ausgleichsresonatoranpassungstopologie RF device with Ausgleichsresonatoranpassungstopologie |
| 04/17/2013 | EP2582044A1 Measurement of the output current of an amplifier circuit |
| 04/17/2013 | EP2582042A1 A low-noise amplifier circuit |
| 04/17/2013 | EP2582041A2 Apparatus and Method for Interleaving Switching in Power Amplifier |
| 04/17/2013 | EP2582040A2 Apparatus and method for expanding operation region of power amplifier |
| 04/17/2013 | EP2582039A2 System and method for generating a radio frequency pulse-width modulated signal |
| 04/17/2013 | EP2582037A1 Device and method for reproducing an audio signal |
| 04/17/2013 | EP2580861A1 Integrated circuit including a differential power amplifier with a single ended output and an integrated balun |
| 04/17/2013 | CN202889294U Implementation device of nonlinear ultrasonic detector analogue amplifying circuit |
| 04/17/2013 | CN202889293U Small-sized electric charge amplifying device |
| 04/17/2013 | CN202889292U Operational amplifier circuit |
| 04/17/2013 | CN202889290U Vehicle-mounted high fidelity micro digitized audio power amplifier |
| 04/17/2013 | CN103052889A Systems and methods for high-sensitivity detection of input bias current |
| 04/17/2013 | CN103051299A Programmable gain amplifier applicable to transmitting end of communication system |
| 04/17/2013 | CN103051298A Programmable gain amplification circuit and programmable gain amplifier |
| 04/17/2013 | CN103051297A 电路和功率放大器 Circuit and power amplifier |
| 04/17/2013 | CN103051296A Multi-stage digitally-controlled power amplifier, emitter and related method thereof |
| 04/17/2013 | CN103051295A Digital-controlled power amplifier with bandpass filtering/transient waveform control |
| 04/17/2013 | CN103051294A 高频信号放大器 High-frequency signal amplifier |
| 04/17/2013 | CN103051293A Pre-distortion processing method and system for radio frequency amplifier |
| 04/17/2013 | CN101814650B Amplifier system of front screen printed antenna for automobiles |
| 04/16/2013 | US8421727 Transmitter circuit, transmission circuit and driver unit |
| 04/16/2013 | US8421541 RF single-ended to differential converter |
| 04/16/2013 | US8421539 Multi-mode high efficiency linear power amplifier |
| 04/16/2013 | US8421538 Feedback amplifier |
| 04/16/2013 | US8421537 Electronic circuit |
| 04/16/2013 | US8421536 Apparatus and methods for electronic amplification |
| 04/16/2013 | US8421535 Method and apparatus for reducing distortion in Class D amplifier |
| 04/16/2013 | US8421532 Metamaterial power amplifier systems |
| 04/16/2013 | US8420996 Intensity estimation using binary sensor array with spatially varying thresholds |
| 04/13/2013 | CA2792074A1 Proximity sensing for user detection and automatic volume regulation with sensor interruption override |
| 04/11/2013 | WO2013051763A1 Differential power amplifier using mode injection |
| 04/11/2013 | WO2013012789A3 High speed amplifier |
| 04/11/2013 | WO2012154840A3 System providing switchable impedance transformer matching for power amplifiers |
| 04/11/2013 | US20130088473 Output circuit, data driver, and display device |
| 04/11/2013 | US20130088298 High performance class ab operational amplifier |
| 04/11/2013 | US20130088297 PWM Re-Clocking Scheme To Reject Accumulated Asynchronous Jitter |
| 04/11/2013 | US20130088296 Attenuating Noise and Cross-Talk in an Audio System by Offsetting Outputs In Phase |
| 04/11/2013 | US20130088295 Multi-Band Power Amplifier |
| 04/11/2013 | US20130088294 Attenuating Non-Linear Noise in An Amplifier with Alternating DC -offset Correction |
| 04/11/2013 | US20130088292 Solid-state imaging apparatus |
| 04/11/2013 | DE102012204428A1 Driver for magnetic resonance tomography (MRT) device has current mirror as load of differential stage, to form asymmetric output of driver |
| 04/11/2013 | DE102011115503A1 Messung des Ausgangstroms einer Verstärkerschaltung Measurement of the output current of an amplifier circuit |
| 04/10/2013 | EP2579458A1 Switching circuit and envelope signal amplifier |
| 04/10/2013 | EP2579456A1 Control method for fast tracking power source, fast tracking power source and system |
| 04/10/2013 | CN202872737U True RMS (root mean square) - DC (direct current) converter high-temperature thick-film integrated circuit |
| 04/10/2013 | CN202872736U Linear power amplifier device of very high frequency (VHF) wave band |
| 04/10/2013 | CN202872735U 450MHz-1,000MHz 200W power amplifier |
| 04/10/2013 | CN202872734U Sub-woofer power amplifier with self-diagnosis function |
| 04/10/2013 | CN1968008B Amplifiers with compensation |
| 04/10/2013 | CN1805618B Bidirectional headphone and hands-free loudspeaker and power amplifier and control circuit for mobile audio devices |
| 04/10/2013 | CN103036518A Volume adjustment control module without transmission distortion |
| 04/10/2013 | CN103036516A Operational amplifier with low supply voltage and high common-mode rejection ratio |
| 04/10/2013 | CN103036515A Operational amplifier for improving switching rate index |
| 04/10/2013 | CN103036514A Method for calculating output quantity of power amplifier by using Volterra correction model |
| 04/10/2013 | CN103036513A Linear power amplifying device |
| 04/10/2013 | CN103036511A ADC (analog-to-digital converter) allowance amplifying circuit of infrared focal plane array detector readout circuit |
| 04/10/2013 | CN103035704A Semiconductor device and method of manufacturing the same |
| 04/10/2013 | CN103035672A Compound semiconductor device and method of manufacturing the same |
| 04/10/2013 | CN103035670A Compound semiconductor device and method of manufacturing the same |
| 04/10/2013 | CN102064778B Gain adjustable amplifier |
| 04/10/2013 | CN101895295B Operational amplifier-shared low-power consumption production line analog-digital converter |
| 04/10/2013 | CN101682421B Optical receiver circuit |
| 04/10/2013 | CN101682303B Tuning multiport amplifiers |
| 04/09/2013 | US8417200 Wideband power efficient high transmission power radio frequency (RF) transmitter |
| 04/09/2013 | US8416969 Amplifier circuit |
| 04/09/2013 | US8416956 Protected digital audio driver |
| 04/09/2013 | US8416024 Impedance matching arrangement for amplifier having split shunt capacitor and amplifier including the same |
| 04/09/2013 | US8416023 System and method for compensating for changes in an output impedance of a power amplifier |
| 04/09/2013 | US8416022 Power amplifier device |
| 04/09/2013 | US8416021 Amplifier circuit |
| 04/09/2013 | US8416020 Switching amplifier and switching amplifying method |
| 04/09/2013 | US8416018 Variable frequency amplifier |
| 04/09/2013 | US8416017 Circuit and method for reducing noise in class D amplifiers |
| 04/09/2013 | US8416016 Apparatus and method for controlling a common-mode voltage of switching amplifiers |
| 04/04/2013 | WO2013049212A1 Resource pooling amplifier |
| 04/04/2013 | WO2013048891A1 Digitally-scalable transformer combining power amplifier |
| 04/04/2013 | WO2013047607A1 Semiconductor module |
| 04/04/2013 | WO2013047550A1 Signal synthesis circuit, digital audio amplifier, and power supply circuit |
| 04/04/2013 | WO2013047540A1 Redundant amplifier and switching method thereof |
| 04/04/2013 | WO2013046354A1 Vehicle proximity notification device |
| 04/04/2013 | WO2013046303A1 Amplifier circuit and output and generation method for amplifier circuit |
| 04/04/2013 | WO2013046284A1 Optical signal processing device and optical signal processing method |
| 04/04/2013 | WO2013046099A1 Gradient amplifier with compensation for dead time and forward voltage |
| 04/04/2013 | WO2013011026A3 Amplifier arrangement |
| 04/04/2013 | WO2012030436A3 Symmetrical physiological signal sensing with a medical device |
| 04/04/2013 | US20130084799 Antenna Driver Circuit for NFC Reader Applications |
| 04/04/2013 | US20130082783 Semiconductor Device |
| 04/04/2013 | US20130082782 Circuit and Power Amplifier |
| 04/04/2013 | US20130082779 Amplifier |
| 04/04/2013 | US20130082778 Differential amplifier |
| 04/04/2013 | US20130082777 Bias controlling apparatus |
| 04/04/2013 | US20130082776 Amplifier for receiving optical signals complementary to each other |
| 04/04/2013 | US20130082774 Linearity power amplification device |
| 04/04/2013 | US20130082772 Digitally-scalable transformer combining power amplifier |
| 04/04/2013 | US20130082771 Resource pooling amplifier |
| 04/04/2013 | US20130082770 Electronic circuit having band-gap reference circuit and start-up circuit, and method of starting-up band-gap refernce circuit |
| 04/04/2013 | US20130082711 Signal splitter |
| 04/04/2013 | DE112009005442T5 Koppler und Verstärkeranordnung Coupler and amplifier arrangement |