| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 12/11/2001 | US6329881 Preamplifier |
| 12/11/2001 | US6329879 High frequency power amplifier system and wireless communication system |
| 12/11/2001 | US6329878 Method and apparatus for improving power supply rejection in amplifier rail to rail output stages |
| 12/11/2001 | US6329877 Efficient power amplifier |
| 12/11/2001 | US6329876 Noise reduction scheme for operational amplifiers |
| 12/11/2001 | US6329875 Power amplifier, power control method for power amplifier, and communication equipment |
| 12/11/2001 | US6329865 Linearized transconductance cell |
| 12/11/2001 | US6329849 Apparatus and method for converting differential voltage to fully balanced currents |
| 12/11/2001 | US6329260 Analog-to-digital converter and method of fabrication |
| 12/06/2001 | WO2001093419A1 Output stage protection circuit for power amplifier |
| 12/06/2001 | WO2001092977A2 Voltage regulator circuit |
| 12/06/2001 | US20010048488 Intermediate frequency circuit of digital television tuner having flat transmission characteristic in intermediate frequency band |
| 12/06/2001 | US20010048344 Amplifier circuit with offset compensation, in particular for digital modulation devices |
| 12/06/2001 | US20010048293 Voltage regulator circuit |
| 12/06/2001 | US20010048164 High-frequency signal amplification device and method for manufacturing the same |
| 12/06/2001 | US20010048120 Heterojunction bipolar transistor composed of emitter layer which includes orderly structured layer and disorderly structured layer |
| 12/06/2001 | DE10027164A1 Circuit for converting digital electrical signals into continuous acoustic signals using digital amplifiers driving electroacoustic transducers with low-pass characteristics |
| 12/05/2001 | EP1161044A2 Quadrature modulator |
| 12/05/2001 | EP1160980A2 Intermediate frequency circuit of digital television tuner having flat transmission characteristic in intermediate frequency band |
| 12/05/2001 | EP1160971A2 Negative feed-back amplifier and method for negative feed-back |
| 12/05/2001 | EP0904633A4 Power delivery system and method of controlling the power delivery system for use in a radio frequency system |
| 12/05/2001 | CN1325560A Battery polarity insensitive integrated circuit amplifier |
| 12/05/2001 | CN1325182A Feedforward amplifier |
| 12/04/2001 | US6326849 Isolation circuit for use in RF amplifier bias circuit |
| 12/04/2001 | US6326847 High gain, high speed, rail-to-rail amplifier |
| 12/04/2001 | US6326846 Low voltage fet differential amplifier and method |
| 12/04/2001 | US6326842 Variable gain amplifying apparatus which can change a gain during an operation |
| 12/04/2001 | US6326841 Method and apparatus for compensating for loss or RF output power from the isolation port of a hybrid coupler |
| 12/04/2001 | US6326817 Circuit for suppressing a common mode component in a signal from a CAN communication bus |
| 12/04/2001 | US6326815 Sense amplifier of semiconductor integrated circuit |
| 12/04/2001 | US6326620 Switched mode NDIR system |
| 12/04/2001 | CA2248888C Class a/f amplifier having second and third order harmonic input and output filtering and self bias distortion correction |
| 11/29/2001 | WO2001091304A2 Method and apparatus for use in switched capacitor systems |
| 11/29/2001 | WO2001091303A2 Method and apparatus for use in switched capacitor systems |
| 11/29/2001 | WO2001091287A1 Demodulation filter |
| 11/29/2001 | WO2001091286A1 Carrousel handshake |
| 11/29/2001 | WO2001091285A1 Silent start |
| 11/29/2001 | WO2001091284A1 Pwm limiter |
| 11/29/2001 | WO2001091283A1 Feedforward amplifier |
| 11/29/2001 | WO2001091281A2 Level shifter for switching power amplifier |
| 11/29/2001 | WO2001091280A1 High impedance bias device |
| 11/29/2001 | US20010045945 Thin film transistor circuit and semiconductor display device using the same |
| 11/29/2001 | US20010045867 Microwave amplifier |
| 11/29/2001 | US20010045866 Electronic circuit for providing a desired common mode voltage to a differential output of an amplifier stage |
| 11/29/2001 | US20010045865 Common-mode feedback circuit and method |
| 11/29/2001 | US20010045847 Track and hold amplifier |
| 11/29/2001 | DE10102891A1 High power amplifier, for e.g. radio transmitter, has harmonic processing circuit to process the harmonic in the output signal of the amplifier element |
| 11/29/2001 | DE10023114A1 Verstärkerschaltung mit Offset-Kompensation, insbesondere für digitale Modulationseinrichtungen Amplifier circuit with offset compensation, in particular for digital modulation devices |
| 11/28/2001 | EP1158665A2 Multiport amplifier with a number of amplifier elements other than 2n |
| 11/28/2001 | EP1158663A2 Digital switching amplifier |
| 11/28/2001 | EP1158661A2 Feed-forward amplifier |
| 11/28/2001 | EP1157457A1 A closed loop calibration for an amplitude reconstruction amplifier |
| 11/28/2001 | EP0746929B1 High speed differential receiver for data communications |
| 11/28/2001 | EP0727108B1 Power supply modulator circuit for transmitter |
| 11/28/2001 | CN1324558A Electrical component and electrical circuit module having connected ground planes |
| 11/28/2001 | CN1324514A Dual-band, dual-mode powder amplifier with reduced power loss |
| 11/28/2001 | CN1324147A Optimization transmitter/receiver link impedance |
| 11/28/2001 | CN1324143A High efficiency amplifier having amplifying device, radio communication device and its testing device |
| 11/28/2001 | CN1075685C 场效应晶体管放大器 FET amplifier |
| 11/27/2001 | US6324083 Method of and arrangement for converting voltage to current |
| 11/27/2001 | US6323848 Liquid crystal display driving semiconductor device |
| 11/27/2001 | US6323734 Trans-impedance amplifier |
| 11/27/2001 | US6323733 High efficiency dual supply power amplifier |
| 11/27/2001 | US6323732 Differential amplifiers having β compensation biasing circuits therein |
| 11/27/2001 | US6323731 Variable bias control for switch mode RF amplifier |
| 11/27/2001 | US6323730 High resolution zero input current charge sensitive preamplifier |
| 11/27/2001 | US6323729 Amplifier arrangement with voltage gain and reduced power consumption |
| 11/27/2001 | US6323723 Current mirror circuit |
| 11/27/2001 | US6323719 Pseudo bipolar junction transistor |
| 11/27/2001 | US6323695 Comparator with controllable bias current source |
| 11/22/2001 | WO2001089082A2 An ultra linear high frequency transconductor structure |
| 11/22/2001 | US20010043152 Digital switching amplifier |
| 11/22/2001 | US20010043130 Directional coupler, high frequency circuit module and wireless communication system |
| 11/22/2001 | US20010043121 Semiconductor circuit with a stabilized gain slope |
| 11/22/2001 | US20010043120 Method for bias rail buffering |
| 11/22/2001 | US20010043118 Feed-forward amplifier |
| 11/22/2001 | US20010043117 Switching amplifier resolution enhancement apparatus and methods |
| 11/22/2001 | US20010043108 Read-head preamplifier having internal offset compensation |
| 11/21/2001 | EP1156583A2 Amplification circuit for electric charge type sensor |
| 11/21/2001 | EP1156582A2 Transmitter/receiver chain impedance optimization |
| 11/21/2001 | EP1155495A1 Method and circuit for controlling the compensation of offset voltages of a radio receiver circuit which is integrated in a circuit module |
| 11/21/2001 | EP0906660B1 Low power audio device |
| 11/21/2001 | EP0763886B1 Tuned amplifier |
| 11/21/2001 | CN1075286C 功率放大器电路 Power amplifier circuit |
| 11/21/2001 | CN1075285C Push-pull power amplifier module for cable TV |
| 11/21/2001 | CN1075249C N way power distributor/synthesizer |
| 11/20/2001 | US6321075 Hardware-efficient transceiver with delta-sigma digital-to-analog converter |
| 11/20/2001 | US6320913 Circuit and method for controlling transmission amplifiers |
| 11/20/2001 | US6320890 Laser driving circuit capable of stably controlling laser output |
| 11/20/2001 | US6320468 Method and system for suppressing oscillations in a multi-stage amplifier |
| 11/20/2001 | US6320467 Ft multiplier amplifier with low-power biasing circuit |
| 11/20/2001 | US6320466 Amplifier circuit |
| 11/20/2001 | US6320465 Constant duty-cycle limiting of analog input signal swing in a class-D amplifier |
| 11/20/2001 | US6320462 Amplifier circuit |
| 11/20/2001 | US6320460 Class D amplifier |
| 11/20/2001 | US6320364 Current source circuit |
| 11/20/2001 | US6320337 Control drive circuit and control drive method |
| 11/15/2001 | WO2001086806A2 Apparatus and method for efficiently amplifying wideband envelope signals |
| 11/15/2001 | WO2001086805A1 Current mirror and method for operation thereof |
| 11/15/2001 | US20010041547 Dynamic bias for RF power amplifiers |