| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 08/05/2009 | EP1230730B1 Amplifier with improved, high precision, high speed and low power consumption architecture |
| 08/05/2009 | CN201286083Y Audio power amplifying circuit and television set having the circuit |
| 08/05/2009 | CN201286082Y Wideband radio frequency amplifier with three function |
| 08/05/2009 | CN101501986A Stacked buffers |
| 08/05/2009 | CN101501985A Electronic device for self oscillating class D system |
| 08/05/2009 | CN101501984A Wideband circuits and methods |
| 08/05/2009 | CN101499781A Distortion compensating apparatus and power amplifier apparatus |
| 08/05/2009 | CN101499779A Piezoelectric minimized wide-band power amplifier |
| 08/05/2009 | CN101499777A Highly efficient power amplifier and implementing method thereof |
| 08/05/2009 | CN101499257A Layout of integrated circuit containing operational amplifier |
| 08/05/2009 | CN101498760A Power amplifier aging apparatus and method |
| 08/05/2009 | CN100525400C Read-out circuit for infrared detectors |
| 08/05/2009 | CN100525128C Wireless communication apparatus |
| 08/05/2009 | CN100525122C Harmonic intensified radio-frequency low noise amplifier |
| 08/05/2009 | CN100525087C Balance power amplifier based on 90 degree branch mixed electrical bridge |
| 08/05/2009 | CN100525086C Driving circuit |
| 08/05/2009 | CN100525085C Power amplifier using transmission line transformer |
| 08/05/2009 | CN100525084C Low distortion class-d amplifier |
| 08/05/2009 | CN100525083C Power supply rejection for pulse width modulated amplifiers and automatic gain control |
| 08/05/2009 | CN100525082C High-frequency power amplifier |
| 08/05/2009 | CN100525081C Driving circuit of brushless controller power valve |
| 08/05/2009 | CN100525078C Power circuit of field effect tube microwave amplifier |
| 08/05/2009 | CN100525077C Low noise amplifier using cascode structure to realize single end input to differential pair output |
| 08/05/2009 | CN100525076C Amplifier apparatus and method |
| 08/05/2009 | CN100524381C Circuit arrangements and methods for a remote control receiver having a photodiode |
| 08/04/2009 | US7570932 Dual mode quadrature radio frequency power amplifier |
| 08/04/2009 | US7570119 Cascode-connected amplifier circuit, semiconductor integrated circuit using same, and receiving apparatus using same |
| 08/04/2009 | US7570117 Amplifier device |
| 08/04/2009 | US7570116 Output stage |
| 08/04/2009 | US7570115 Common mode voltage extraction circuit |
| 08/04/2009 | US7570114 Common mode rejection calibration method for difference amplifiers |
| 08/04/2009 | US7570113 Overload recovery circuit for folded cascode amplifiers |
| 08/04/2009 | US7570112 Ultrasound imaging or other use variable input impedance preamplifier |
| 08/04/2009 | US7570111 Apparatus and method for wideband amplification of RF signals |
| 07/30/2009 | WO2009092722A1 Multibit modulator with digital adjustable pulse duration |
| 07/30/2009 | US20090189697 Auto-tuning amplifier |
| 07/30/2009 | US20090189696 Low-noise amplifier |
| 07/30/2009 | US20090189695 Amplifier circuit having stacked main amplifier and parallel sub-amplifier |
| 07/30/2009 | US20090189694 Differential amplifier with accurate input offset voltage |
| 07/30/2009 | US20090189693 Operational amplifier |
| 07/30/2009 | US20090189689 Power supply processing for power amplifiers |
| 07/30/2009 | US20090189687 Multi-mode reconstruction filter |
| 07/30/2009 | DE102009005493A1 Verstärkermodulationsverfahren und Vorrichtung Amplifier modulation method and device |
| 07/30/2009 | DE102008006077A1 Verstärkeranordnung und Verfahren Amplifier arrangement and method |
| 07/29/2009 | EP2083542A2 Power amplifying apparatus with bandwidth limitation processing on variable power supply |
| 07/29/2009 | EP2082479A1 Circuit and method for biasing a gallium arsenide (gaas) power amplifier |
| 07/29/2009 | EP2082478A2 System and method for on-chip im3 reduction over a broad range of operating powers |
| 07/29/2009 | CN101494443A DC offset correction circuit and method |
| 07/29/2009 | CN101494442A Guide exchange type power amplifier |
| 07/29/2009 | CN101494441A Wideband low noise amplifier |
| 07/29/2009 | CN100521818C Multichannel pulsewidth modulator |
| 07/29/2009 | CN100521522C High-frequency receiver and high-frequency transmitter using the same |
| 07/29/2009 | CN100521519C Differential circuit, driver circuit and display device using those circuits |
| 07/29/2009 | CN100521518C Digital microphone |
| 07/29/2009 | CN100521517C Preamplifier gain switching circuit and method |
| 07/29/2009 | CN100521516C Amplifier circuit for capacitive transducers |
| 07/29/2009 | CN100521511C Amplifier circuit having an extended Wilson current-mirror self-bias boosting circuit |
| 07/29/2009 | CN100521510C Cascode cmos RF power amplifier with isolated trnasistors |
| 07/29/2009 | CN100521509C Gain changeable amplifier |
| 07/28/2009 | US7567130 Linearized trans-impedance amplifier |
| 07/28/2009 | US7567129 Monolithic flexible power amplifier using integrated tunable matching networks |
| 07/28/2009 | US7567128 Power amplifier suppressing radiation of second harmonic over wide frequency band |
| 07/28/2009 | US7567127 Automatic-gain control circuit |
| 07/28/2009 | US7567125 Differential amplifier with multiple signal gains and wide dynamic range |
| 07/28/2009 | US7567124 Symmetrical differential amplifier |
| 07/28/2009 | US7567122 Variable gain amplifiers systems and methods |
| 07/28/2009 | US7567121 Current-mode instrumentation amplifier error reduction circuit and method |
| 07/28/2009 | CA2402704C System and method of producing direct audio from a power supply |
| 07/23/2009 | WO2009090825A1 Predistorter |
| 07/23/2009 | WO2009090065A1 Amplifier arrangement and method |
| 07/23/2009 | WO2009037625A3 Tunable rf filter |
| 07/23/2009 | US20090184770 Device and method for biasing a transistor amplifier |
| 07/23/2009 | US20090184767 Operational amplifier |
| 07/23/2009 | US20090184766 low-voltage wide-range linear transconductor cell |
| 07/23/2009 | US20090184765 Class-d amplifier and method therefor |
| 07/23/2009 | US20090184763 Apparatus and method for digital pre-distortion, sharing feedback path in a multiple antenna wireless communication system |
| 07/23/2009 | US20090184761 Amplifier modulation method and apparatus |
| 07/23/2009 | US20090184236 Solid state image pickup element and camera system |
| 07/23/2009 | DE102009003891A1 Transformator mit einer primärer Wicklung mit mehreren Segmenten und einer sekundären Wicklung mit mehreren Windungen für ein Leistungsverstärkersystem Transformer having a primary winding with a plurality of segments and a secondary winding having a plurality of turns on a power amplifier system |
| 07/22/2009 | CN101488730A Amplifier, audio system and input signal amplification method |
| 07/22/2009 | CN101488729A Multi-segment primary and multi-turn secondary transformer for power amplifier systems |
| 07/22/2009 | CN100517960C Amplifier, and transmitter and communication device incorporating the same |
| 07/22/2009 | CN100517959C High common mode rejection ratio preamplifier |
| 07/22/2009 | CN100517958C High-frequency power amplifying circuit |
| 07/22/2009 | CN100517957C Signal amplifier |
| 07/22/2009 | CN100517956C Class-D amplifier |
| 07/21/2009 | US7565128 High performance low noise amplifier |
| 07/21/2009 | US7565116 High frequency module |
| 07/21/2009 | US7564638 Preamplifier circuit and method for a disk drive device |
| 07/21/2009 | US7564312 Resonant amplifier |
| 07/21/2009 | US7564309 Wide input common mode for input bias current cancellation |
| 07/21/2009 | US7564308 Self-biased operational amplifier |
| 07/21/2009 | US7564307 Common mode feedback amplifier with switched differential capacitor |
| 07/21/2009 | US7564306 Amplifier with common-mode feedback circuit |
| 07/21/2009 | US7564304 Audio power amplifier apparatus |
| 07/21/2009 | US7564272 Differential amplifier |
| 07/21/2009 | US7564022 Method and device for time-gating the sensitivity of an imager structure |
| 07/21/2009 | US7562581 Wireless sensor platform for harsh environments |
| 07/16/2009 | WO2009089478A1 Commutating amplifier with wide dynamic range |
| 07/16/2009 | WO2009088886A2 Systems and methods for improved over-current clipping |