| 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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| 06/05/2003 | US20030102918 Push-pull amplifiers |
| 06/05/2003 | US20030102917 Output stage configuration of an operational amplifier |
| 06/05/2003 | US20030102914 Control scheme for distortion reduction |
| 06/05/2003 | US20030102911 Bipolar transistor-based linearizer with programmable gain and phase response system |
| 06/05/2003 | US20030102908 Frequency-compensated, multistage amplifier configuration and method for operating a frequency-compensated amplifier configuration |
| 06/05/2003 | US20030102853 Complementary electronic system for lowering electric power consumption |
| 06/04/2003 | EP1317105A1 Line driver using a class G amplifier and a programmable peak detector |
| 06/04/2003 | EP1317063A1 High-frequency amplifier, feed-forward amplifier and distortion compensation amplifier |
| 06/04/2003 | EP1316145A1 Off-line mcpa calibration |
| 06/04/2003 | CN1422455A 功率放大器模块 Power Amplifier Module |
| 06/04/2003 | CN1422454A Power booster method and apparatus for improving the performance of radio frequency linear power amplifiers |
| 06/04/2003 | CN1110890C Method and apparatus for controlling and maintaining tower top low noise amplifier |
| 06/04/2003 | CN1110888C Voltage-current converter for high frequency application |
| 06/03/2003 | US6573797 High-frequency power amplifier |
| 06/03/2003 | US6573796 Automatic LDMOS biasing with long term hot carrier compensation |
| 06/03/2003 | US6573794 Operational amplifier |
| 06/03/2003 | US6573793 Reflect forward adaptive linearizer amplifier |
| 06/03/2003 | US6573792 Feedforward amplifier |
| 06/03/2003 | US6573791 Multipath nested Gm nested miller compensation |
| 06/03/2003 | US6573790 Wide-bandwidth operational amplifier |
| 06/03/2003 | US6573789 Signal processing circuit for floating signal sources using positive feedback |
| 06/03/2003 | US6573788 Amplifier device with frequency-response-compensating amplifier reactance, and use of the amplifier device |
| 06/03/2003 | US6573787 Elimination of noise during power supply switching in an audio amplifier circuit |
| 06/03/2003 | US6573786 Electronic devices comprising an audio amplifier and methods for controlling such electronic devices |
| 05/30/2003 | WO2003044947A1 Power amplifier |
| 05/30/2003 | WO2003044944A1 A new tyre digital audio power amplifier |
| 05/30/2003 | WO2003044943A1 Power amplifier arrangements with predistorter comprising vector modulators |
| 05/30/2003 | WO2003044942A1 N way phase cancellation power amplifier |
| 05/30/2003 | WO2003044932A2 Switched mode power amplifier |
| 05/30/2003 | WO2002050994A3 Linearized class c amplifier with dynamic biasing |
| 05/29/2003 | US20030099233 Switched-capacitor integrator |
| 05/29/2003 | US20030098724 Receiving circuit |
| 05/29/2003 | US20030098407 Integrated fiber optic receiver power meter |
| 05/28/2003 | EP1315291A1 Wide-band amplifier |
| 05/28/2003 | EP1315290A1 Pseudo-differential amplifier and analog-to-digital converter using the same |
| 05/28/2003 | EP1315289A1 Power amplifier module |
| 05/28/2003 | EP1315288A1 Distortion compensation amplifier |
| 05/28/2003 | EP1315286A1 Multistage amplifier |
| 05/28/2003 | EP1068666B1 Hybrid chireix/doherty amplifiers power waveform synthesis |
| 05/28/2003 | EP1062523B1 Power supply circuit |
| 05/28/2003 | CN1421073A Envelope-tracking amplifier having improved gain, terminal device for mobile communication using same, and method for improving gain relating thereto |
| 05/28/2003 | CN1421069A 天线放大器 Antenna Amplifier |
| 05/28/2003 | CN1420627A RF communication amplifier circuit capable of preventing diode protection circuit from generating electromagnetic interference |
| 05/28/2003 | CN1420624A Crackle suppressing circuit and sound output amplifier |
| 05/28/2003 | CN1420623A RF communication amplifier circuit capable of preventing electromagnetic interference of emitter loop |
| 05/28/2003 | CN1110127C Protective circuit |
| 05/28/2003 | CN1110126C Buffering high-frequency tuned amplifier |
| 05/28/2003 | CN1110125C Device and method for compensating phase distorsion |
| 05/27/2003 | US6570914 Amplitude calculation circuit |
| 05/27/2003 | US6570451 High-frequency power amplifier |
| 05/27/2003 | US6570450 Efficient AC coupled CMOS RF amplifier |
| 05/27/2003 | US6570449 Operation amplification circuit, constant voltage circuit and reference voltage circuit |
| 05/27/2003 | US6570445 Linearizer for microwave amplifier |
| 05/27/2003 | US6570444 Low noise wideband digital predistortion amplifier |
| 05/27/2003 | US6570430 Non-linear distortion generator for both second and third order distortion |
| 05/27/2003 | CA2075588C Power amplifier for a cellular telephone |
| 05/22/2003 | WO2003043184A1 Time division multiplexed pwm amplifier |
| 05/22/2003 | WO2003043183A1 Digital linearization circuit |
| 05/22/2003 | WO2003043182A1 Non-linear modeling method |
| 05/22/2003 | US20030095666 Machine for controlling and amplifying a low-level audio signal using a high efficiency class D switching amplifier |
| 05/22/2003 | US20030095002 N way phase cancellation power amplifier |
| 05/22/2003 | US20030095000 Apparatus with ultra high output power class D audio amplifier |
| 05/22/2003 | US20030094994 Method and device for reducing influence of early effect |
| 05/22/2003 | US20030094932 Power supply rejection ratio optimization during test |
| 05/21/2003 | EP1313278A1 Method and apparatus for adaptive digital predistortion in a radio transmitter |
| 05/21/2003 | EP1313212A1 Power supply rejection ratio optimization during test |
| 05/21/2003 | EP1312160A1 Linear pre-amplifier for radio-frequency power amplifier |
| 05/21/2003 | EP1312159A2 Radio frequency feedback amplifier circuits |
| 05/21/2003 | EP1312158A1 Transmitter including a composit amplifier |
| 05/21/2003 | EP1232565B1 High efficiency power amplifier |
| 05/21/2003 | EP1099300B1 Circuit for generating an auxiliary direct current voltage |
| 05/21/2003 | EP0925643B1 High-efficiency amplifying device |
| 05/21/2003 | CN1419352A Optimization method for simultaneous amplifying multiple amplifier efficiency of carrier-modulation |
| 05/21/2003 | CN1419342A Aplitude method for signal transmitted from samd amplifier and having multiple carrier wave |
| 05/21/2003 | CN1109401C Bias circuit and method for multistage power amplifier |
| 05/20/2003 | US6567478 Radio apparatus having distortion compensating function |
| 05/20/2003 | US6566963 Transformer-based low noise variable gain driver amplifier |
| 05/20/2003 | US6566960 High back-EMF high pressure subwoofer having small volume cabinet low frequency cutoff and pressure resistant surround |
| 05/20/2003 | US6566959 Amplifier circuit having a particular biasing arrangement |
| 05/20/2003 | US6566958 Low power systems using enhanced bias control in rail-to-rail gain stage amplifiers |
| 05/20/2003 | US6566956 High frequency power amplifier |
| 05/20/2003 | US6566954 High frequency amplifier bias circuit, high frequency power amplifier, and communication device |
| 05/20/2003 | US6566953 High-frequency amplifier circuit for UHF television tuner having less distortion |
| 05/20/2003 | US6566948 Method and system for reducing non-linearities |
| 05/20/2003 | US6566946 Noise reduction scheme for operational amplifiers |
| 05/20/2003 | US6566945 Feedforward amplifier |
| 05/20/2003 | US6566944 Current modulator with dynamic amplifier impedance compensation |
| 05/20/2003 | US6566891 Measurement system and method of determining characteristics associated with a waveform having distortion associated therewith |
| 05/20/2003 | CA2169041C Transimpedance amplifier circuit |
| 05/15/2003 | WO2003041265A1 Transient damping arrangement |
| 05/15/2003 | US20030092462 Method of optimizing the efficiency of an amplifier for amplifying a plurality of modulated carriers simultaneously |
| 05/15/2003 | US20030092407 Radio transmission apparatus for communication using microwave signal |
| 05/15/2003 | US20030092405 Envelope limiting for polar modulators |
| 05/15/2003 | US20030091123 Method of clipping signal comprising a plurality of carriers transmitted by the same non-linear amplifier |
| 05/15/2003 | US20030090325 Power amplifier with provisions for varying operating voltage based upon power amplifier output power |
| 05/15/2003 | US20030090319 Multicarrier amplifying device |
| 05/15/2003 | US20030089965 Bipolar transistor circuit and usage method of bipolar transistor |
| 05/14/2003 | EP1311097A1 Method for clipping a composite multicarrier modulated signal |
| 05/14/2003 | EP1311062A2 Method for optimising the efficiency of an amplifier for multicarrier signals |
| 05/14/2003 | EP1310042A1 Noise and input impedance matched amplifier |