| 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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| 12/13/2001 | WO2001095485A2 Radio frequency device with fast charging of an input capacitance |
| 12/13/2001 | WO2001095483A1 Improvements in push-pull amplifiers |
| 12/13/2001 | WO2001095482A2 Method and apparatus for amplifier output biasing for improved overall temperature stability |
| 12/13/2001 | WO2001095481A1 Multistage doherty amplifier |
| 12/13/2001 | WO2001095480A1 Composite amplifier |
| 12/13/2001 | WO2001074000A8 Low-power cdma receiver |
| 12/13/2001 | WO2001056176A3 Ingrated rf power sensor that compensates for bias changes |
| 12/13/2001 | US20010051513 Power amplification system with intelligent control of amplifier modules |
| 12/13/2001 | US20010051504 Activation method of communications apparatus with a non-linear distortion compensation device |
| 12/13/2001 | US20010051188 Spheronized beadlets contain didanosine and binder for oral administration; HIV; AIDS |
| 12/13/2001 | US20010050594 Negative feed-back amplifier and method for negative feed-back |
| 12/13/2001 | US20010050593 Circuit for detecting distortion in an amplifier, in particular an audio amplifier |
| 12/13/2001 | US20010050592 Amplifier measurement and modeling processes for use in generating predistortion parameters |
| 12/13/2001 | US20010050589 Hybrid power MOSFET for high current-carrying capacity |
| 12/13/2001 | US20010050587 Radio frequency amplifier and tuner |
| 12/13/2001 | US20010050410 High sheet MOS resistor method and apparatus |
| 12/12/2001 | EP1162737A1 Semiconductor device and communication device |
| 12/12/2001 | EP1162734A2 Non-linear distortion compensating apparatus |
| 12/12/2001 | EP1162733A2 Linearization of power amplifier |
| 12/12/2001 | EP1162732A2 A linear amplifier arrangement |
| 12/12/2001 | EP1162731A2 Microwave amplifying circuit, microwave amplifying device, and distortion compensation circuit |
| 12/12/2001 | EP1161800A1 A portable radio transceiver |
| 12/12/2001 | EP1161794A1 Power supply compensation for noise shaped, digital amplifiers |
| 12/12/2001 | EP1161792A1 Linearized transconductance cell |
| 12/12/2001 | CN1326614A High efficiency switched gain power amplifier |
| 12/12/2001 | CN1326612A Circuit and method for linearizing amplitude modulation in power amplifier |
| 12/12/2001 | CN1326611A In-line, unbalanced amplifier, pre-distortion circuit |
| 12/12/2001 | CN1326610A Method and apparatus for preventing power amplifier saturation |
| 12/12/2001 | CN1326609A Circuit and method for I/Q modulation with independent, high efficiency amplitude modulation |
| 12/12/2001 | CN1076143C Device for stabilizing limiting frequency by using mutual conductance |
| 12/12/2001 | CN1076138C 振荡器电压调节器 Oscillator voltage regulator |
| 12/12/2001 | CN1076124C Power amplifier circuit |
| 12/11/2001 | US6329881 Preamplifier |
| 12/11/2001 | US6329880 Radio frequency transmitting circuit |
| 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 | US6329871 Reference voltage generation circuit using source followers |
| 12/11/2001 | US6329865 Linearized transconductance cell |
| 12/11/2001 | US6329802 Method and apparatus for programmable power curve and wave generator |
| 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 | WO2001048932A3 Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels |
| 12/06/2001 | US20010048347 Circuit configuration for controlling the operating point of a power amplifier |
| 12/06/2001 | US20010048346 Predistortion circuit, low-distortion power amplifier, and control methods therefor |
| 12/06/2001 | US20010048164 High-frequency signal amplification device and method for manufacturing the same |
| 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 | EP0796522B1 An intermediate frequency amplifier and a method of producing a received signal strength indicator signal |
| 12/05/2001 | CN1325183A Electronic apparatus comprising an audio-frequency amplifier and method for controlling said electronic apparatus |
| 12/05/2001 | CN1325182A Feedforward amplifier |
| 12/05/2001 | CN1325181A Digital dynamic aplifier biasing method and device |
| 12/04/2001 | US6327462 System and method for dynamically varying operational parameters of an amplifier |
| 12/04/2001 | US6326849 Isolation circuit for use in RF amplifier bias circuit |
| 12/04/2001 | US6326845 Feedforward amplifier |
| 12/04/2001 | US6326844 Amplifier apparatus with transient recovery aid |
| 12/04/2001 | US6326843 Analog reflective predistorter for power amplifiers |
| 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 | US6326840 Feed-forward distortion compensation amplifier and method of amplifying signal with feed-forward distortion compensation |
| 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 | WO2001091522A2 Method and apparatus for programmable power curve and wave generator |
| 11/29/2001 | WO2001091288A1 High linearity multicarrier rf amplifier |
| 11/29/2001 | WO2001091285A1 Silent start |
| 11/29/2001 | WO2001091284A1 Pwm limiter |
| 11/29/2001 | WO2001091283A1 Feedforward amplifier |
| 11/29/2001 | WO2001091282A2 Rf power amplifier and methods for improving the efficiency thereof |
| 11/29/2001 | WO2001091281A2 Level shifter for switching power amplifier |
| 11/29/2001 | WO2001091280A1 High impedance bias device |
| 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 | 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 | DE10023524A1 Zweistufiger Verstärker Two-stage amplifier |
| 11/28/2001 | EP1158662A2 Distortion compensation device and distortion compensating method |
| 11/28/2001 | EP1158661A2 Feed-forward amplifier |
| 11/28/2001 | EP1157457A1 A closed loop calibration for an amplitude reconstruction amplifier |
| 11/28/2001 | EP1157389A1 Double input buffer for track-and-hold amplifier |
| 11/28/2001 | EP0995261A4 Adaptive biasing in a power amplifier |
| 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 |
| 11/27/2001 | US6324383 Radio transmitter distortion reducing techniques |
| 11/27/2001 | US6323733 High efficiency dual supply power amplifier |
| 11/27/2001 | US6323731 Variable bias control for switch mode RF amplifier |
| 11/27/2001 | US6323729 Amplifier arrangement with voltage gain and reduced power consumption |
| 11/27/2001 | US6323700 Double input buffer for track-and-hold amplifier |
| 11/22/2001 | WO2001089081A2 Radio frequency feedback amplifier circuits |
| 11/22/2001 | US20010043121 Semiconductor circuit with a stabilized gain slope |
| 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 | EP1155506A1 Transmitter image suppression in tdd transceivers |
| 11/21/2001 | EP1155499A1 Method and apparatus for linear amplification of a radio frequency signal |
| 11/21/2001 | EP1155496A1 Broadband amplification with high linearity and low power consumption |
| 11/21/2001 | EP0838104A4 Method and apparatus for amplifying an electrical signal |