| 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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| 03/05/2002 | US6353344 High impedance bias circuit |
| 03/05/2002 | US6353337 Load capacitance measuring circuit and output buffer adaptive to wide range of load capacitance |
| 03/05/2002 | US6353298 Low distortion audio range class-AB full H-bridge pre-driver amplifier |
| 02/28/2002 | WO2002017586A1 Multicarrier transmitter circuit arrangement with predistortion linearisation method |
| 02/28/2002 | WO2002017480A1 Linear pre-amplifier for radio-frequency power amplifier |
| 02/28/2002 | WO2002017479A2 Amplifier bias voltage generating circuit and method |
| 02/28/2002 | WO2002017478A1 Power amplifier arrangement |
| 02/28/2002 | US20020025790 Linear compensated amplifying equipment |
| 02/28/2002 | US20020025789 Leak power ratio detection circuit, mobile communication terminal, and control circuit for mobile communication terminal |
| 02/28/2002 | US20020024786 Integrated circuit with current sense circuit and associated methods |
| 02/28/2002 | US20020024719 Techniques for enhancing gain in a quasi-optic grid array |
| 02/28/2002 | US20020024392 High frequency power amplifier system and wireless communication system |
| 02/28/2002 | US20020024391 High-frequency semiconductor device |
| 02/28/2002 | US20020024390 Power amplifier module |
| 02/28/2002 | US20020024388 Power supply circuit for transmitter |
| 02/28/2002 | US20020024387 Method for controlling bias in an active grid array |
| 02/28/2002 | US20020024383 Power amplification equipment |
| 02/28/2002 | US20020024363 Sample-and-hold amplifier circuit and pipelined A/D and D/A converters using sample hold amplification circuit |
| 02/28/2002 | DE10038373A1 Breitband-Treiberschaltung Broadband driver circuit |
| 02/27/2002 | EP1182811A2 Bit rate discrimination device with temperature compensation function |
| 02/27/2002 | EP1181773A1 Overvoltage protection |
| 02/27/2002 | EP1181772A1 Broadcast transmission system with correction for distortion |
| 02/27/2002 | EP1181771A1 Broadcast transmission system with distributed correction |
| 02/27/2002 | EP1181770A1 Broadcast transmission system with distributed correction |
| 02/27/2002 | EP1181768A1 Linearisation and modulation device |
| 02/27/2002 | CN1338144A Broadband amplification with high linearity and low power consumption |
| 02/27/2002 | CN1337834A Power amplifier share in wireless communication system with transmitting diversity |
| 02/26/2002 | US6351677 Method and device in a telecommunication system |
| 02/26/2002 | US6351283 Charge amplifier for MOS imaging array |
| 02/26/2002 | US6351189 System and method for auto-bias of an amplifier |
| 02/26/2002 | US6351188 Variable gain amplifier circuit and gain control method |
| 02/26/2002 | US6351184 Dynamic switching frequency control for a digital switching amplifier |
| 02/21/2002 | WO2002015393A2 Digital class-d audio amplifier |
| 02/21/2002 | WO2002015392A2 Circuit configuration for identifying a faulty state |
| 02/21/2002 | WO2002015391A1 Programmable radio frequency predistortion linearizer and method thereof |
| 02/21/2002 | WO2002015390A1 Two-stage operational amplifier |
| 02/21/2002 | WO2002015389A1 Distortion detection apparatus for controlling predistortion, carrier cancellation and feed-forward cancellation in linear rf power amplifiers |
| 02/21/2002 | WO2002015388A2 Amplifier circuits and methods to provide smooth transition of amplifier outputs during powering sequences |
| 02/21/2002 | WO2002015387A2 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control |
| 02/21/2002 | WO2002015386A2 High-efficiency audio power amplifier |
| 02/21/2002 | WO2002015334A1 Switched beam antenna architecture |
| 02/21/2002 | WO2002015323A2 Highly integrated single substrate mmw multi-beam sensor |
| 02/21/2002 | WO2002015055A2 Data processing system |
| 02/21/2002 | WO2002014900A2 Video amplifier for a radar receiver |
| 02/21/2002 | WO2002014898A2 Near object detection system |
| 02/21/2002 | WO2002014891A2 Automotive radar systems and techniques |
| 02/21/2002 | WO2002014098A2 Safe distance algorithm for adaptive cruise control |
| 02/21/2002 | WO2001082471A8 Optimal power combining for balanced error correction amplifier |
| 02/21/2002 | WO2001063792A3 Apparatus for linear transmitter with improved loop gain stabilization |
| 02/21/2002 | US20020022464 Amplifier apparatus |
| 02/21/2002 | US20020021865 Mode translating waveguide adapter for a quasi-optic grid array |
| 02/21/2002 | US20020021764 Multi-frequency transmitter using predistortion and a method of transmitting |
| 02/21/2002 | US20020021687 Time-division multiplexing radio system |
| 02/21/2002 | US20020021173 Non-linear distortion compensating apparatus |
| 02/21/2002 | US20020021170 Feedforward amplifier |
| 02/21/2002 | US20020021164 Eliminating power-down popping in audio power amplifiers |
| 02/21/2002 | US20020020894 RF passive circuit and RF amplifier with via-holes |
| 02/20/2002 | EP0842561B1 Device with amplifier means including safety means, and with filter means connected to the amplifier means |
| 02/20/2002 | CN1337089A Amplifier circuit |
| 02/20/2002 | CN1337088A Multi-frequency transmitter using predistortion and a method of transmitting |
| 02/20/2002 | CN1336723A Self-adaptive distortion compensation arrangement |
| 02/20/2002 | CN1336722A Pilot frequency utilizing type feedforward linear power amplification method and device |
| 02/20/2002 | CN1336721A Method and device for detecting weak signal of known frequency |
| 02/20/2002 | CN1336720A Power amplifier module of mobile communiation arrangement, terminal and its base station for said arrangement |
| 02/20/2002 | CN1336719A Feedforward linear powder amplifier circuit and the method of counteracting AC modulation signal in carrier signal directly |
| 02/20/2002 | CN1079612C Efficient parallel-stage power amplifier |
| 02/20/2002 | CN1079610C DC-offset canceler circuit and method for using the circuit |
| 02/20/2002 | CN1079560C Single-ended supply preamplifier with high power supply rejection ratio |
| 02/19/2002 | US6349216 Load envelope following amplifier system |
| 02/19/2002 | US6348838 Optimal power combining for balanced error correction amplifier |
| 02/19/2002 | US6348834 Linearization of FET channel impedance for small signal applications |
| 02/19/2002 | US6348781 Buck or boost power converter |
| 02/14/2002 | WO2002013402A2 Control of receiver immunity to interference by controlling linearity |
| 02/14/2002 | WO2002013375A2 Method and apparatus for improving power supply rejection in amplifier rail to rail output stages |
| 02/14/2002 | WO2002013374A1 Noise and input impedance matched amplifier |
| 02/14/2002 | WO2002013373A1 Broad-band driver circuit |
| 02/14/2002 | WO2002013372A2 High performance amplifier circuits using separate power supplies |
| 02/14/2002 | WO2002013371A2 Driver circuit for subscriber terminals |
| 02/14/2002 | WO2001082472A8 Loss reduction using multiple amplifiers identically divided |
| 02/14/2002 | US20020019219 Method and apparatus for attaining higher amplifier efficiencies at lower power levels |
| 02/14/2002 | US20020018282 Electronically tunable and modulatable quasi-optic grid oscillator |
| 02/14/2002 | US20020017955 Phase correction amplifier and a feed-forward amplifier using the same |
| 02/14/2002 | US20020017954 Linearized power amplifier based on active feedforward-type predistortion |
| 02/14/2002 | US20020017951 Preamplification circuit |
| 02/14/2002 | DE10038693A1 Temperature sensor for high frequency digital signal amplifier, has control circuit which calculates difference between voltages of FETs which are operated at different operating points by current generator |
| 02/13/2002 | EP1179887A2 Overload distortion protection for a wideband receiver |
| 02/13/2002 | EP1179255A2 Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels |
| 02/13/2002 | EP1179222A1 Rf power amplifier with feedback from the isolation port of a hybrid coupler |
| 02/13/2002 | CN1336035A Noise reduction scheme for operational amplifiers |
| 02/13/2002 | CN1336034A An amplifier for use in a mobile phone |
| 02/13/2002 | CN1335699A Adaptive digital pre-distortion method and device for wideband transmitter |
| 02/12/2002 | US6346859 Microwave amplifier with reduced beat noise |
| 02/12/2002 | US6346855 Amplifier arrangement |
| 02/12/2002 | US6346854 Amplifier circuit with reduced DC power related turn-on and turn-off transients |
| 02/12/2002 | US6346853 Predistortion linearizer circuit |
| 02/12/2002 | CA2279077C Method and apparatus for improving efficiency of high-power linear amplifier |
| 02/07/2002 | WO2002011379A1 Method and apparatus for adaptive digital predistortion in a radio transmitter |
| 02/07/2002 | WO2002011279A2 System and method for auto-bias of an amplifier |
| 02/07/2002 | WO2001054268A3 Circuit for reducing second and third order intermodulation distortion for a broadband rf amplifier |
| 02/07/2002 | US20020014923 Microwave amplifier with reduced beat noise |