| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 10/04/2005 | US6952144 Apparatus and method to provide power amplification |
| 10/04/2005 | US6952136 System to reduce unwanted oscillations in high speed, high gain or transimpedance amplifiers |
| 10/04/2005 | US6952135 Method and apparatus for controlling an amplifier |
| 10/04/2005 | US6952133 Low-distortion differential circuit |
| 10/04/2005 | US6952131 Digital PWM input D class amplifier by PWM negative feedback |
| 10/04/2005 | US6952130 Compensation of offset drift with temperature for operational amplifiers |
| 09/29/2005 | WO2005091498A1 Signal switch circuit |
| 09/29/2005 | WO2005091497A1 Switch mode power supply with output voltage equalizer |
| 09/29/2005 | WO2005091496A1 Fet amplifier, pulse modulation module, and radar device |
| 09/29/2005 | WO2005091495A1 Method and system for amplifying and/or mixing or combining respectively signals, more particularly analog audio signals |
| 09/29/2005 | US20050215209 Transmitter |
| 09/29/2005 | US20050213685 Distortion compensator |
| 09/29/2005 | US20050213672 Current mode transmitter |
| 09/29/2005 | US20050213646 xDSL-line-interface-circuit |
| 09/29/2005 | US20050212791 Differential amplifier, digital-to-analog converter and display apparatus |
| 09/29/2005 | US20050212604 Programmable radio transceiver |
| 09/29/2005 | US20050212602 Method and apparatus for doherty amplifier biasing |
| 09/29/2005 | US20050212601 Power amplifiers |
| 09/29/2005 | US20050212599 Adaptive amplifier output common mode voltage adjustment |
| 09/29/2005 | US20050212598 Circuit structure capable of adjusting gradient of output to temperature variation |
| 09/29/2005 | US20050212597 Amplifier circuit and display device |
| 09/29/2005 | US20050212595 Distortion compensating device and power amplifying device with distortion compensating function |
| 09/29/2005 | US20050212593 Semiconductor circuit |
| 09/29/2005 | US20050212592 Switching amplifier |
| 09/29/2005 | US20050212588 Constant current circuit |
| 09/29/2005 | US20050212584 Fuse sense circuit |
| 09/29/2005 | US20050212582 Circuit and method to compensate for RMR variations and for shunt resistance across RMR in an open loop current bias architecture |
| 09/29/2005 | US20050212576 Pulse width modulation method and apparatus |
| 09/29/2005 | US20050212564 An improved receiver having full signal path differential offset cancellation capabilities |
| 09/29/2005 | US20050212559 Single-ended to differential conversion circuit with duty cycle correction |
| 09/29/2005 | US20050211880 Circuit for estimating position and orientation of a mobile object |
| 09/29/2005 | DE102004045718A1 Isolierter DC-DC-Wandler Isolated DC-DC converter |
| 09/29/2005 | DE102004010785A1 Konfigurierbarer Eingangsverstärker für Positionsmesseinrichtungen Configurable input amplifier for position-measuring devices |
| 09/28/2005 | EP1580881A2 High-frequency power amplifier and communication apparatus |
| 09/28/2005 | EP1580880A1 Disturbance protection for a telecommunications device |
| 09/28/2005 | EP1580879A2 Class E power amplifier circuit and associated transmitter circuits |
| 09/28/2005 | EP1580759A1 Device for generating write current in an MRAM and memory containing said device |
| 09/28/2005 | EP1579573A2 Apparatus and method for safely handling asynchronous shutdown of pulsewidth modulated output |
| 09/28/2005 | EP1579572A1 Peak power limitation in an amplifier pooling scenario |
| 09/28/2005 | EP1579571A2 Phase corrected miller compensation of chopper and nested chopper amplifiers |
| 09/28/2005 | EP1579570A2 Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same |
| 09/28/2005 | EP1579569A1 Power amplifier with bias control |
| 09/28/2005 | EP1579465A2 High power variable slide rf tuner |
| 09/28/2005 | EP1579433A1 Arrangement for reading an information carrier |
| 09/28/2005 | EP1405407B1 Amplifier switch |
| 09/28/2005 | CN1675832A Variable gain amplifier with improved control characteristics linearity |
| 09/28/2005 | CN1675831A Hybrid structure for distributed power amplifiers |
| 09/28/2005 | CN1675830A 运算放大器 Operational Amplifiers |
| 09/28/2005 | CN1675828A Blind linearization using cross-modulation |
| 09/28/2005 | CN1675826A High power Doherty amplifier |
| 09/28/2005 | CN1675825A Sequential DC offset correction for amplifier chain |
| 09/28/2005 | CN1674453A Switch apparatus, switchable power amplification apparatus, and mobile communication terminal apparatus |
| 09/28/2005 | CN1674449A 发射机 Transmitter |
| 09/28/2005 | CN1674437A 比较器电路 Comparator circuit |
| 09/28/2005 | CN1674433A Field emission RF amplifier |
| 09/28/2005 | CN1221072C Linearized class C amplifier with dynamic biasing |
| 09/27/2005 | US6950637 Power rate enhancement circuit for an RF power amplifier in a dual mode mobile phone |
| 09/27/2005 | US6950479 DC offset compensation |
| 09/27/2005 | US6949979 Designing methods and circuits for multi-band electronic circuits |
| 09/27/2005 | US6949978 Efficient broadband switching-mode amplifier |
| 09/27/2005 | US6949977 Circuit arrangement having a transimpedance amplifier connected to a current limiter circuit |
| 09/27/2005 | US6949974 Radio frequency power amplifier |
| 09/27/2005 | US6949973 Signal amplifier |
| 09/22/2005 | WO2005088842A1 Transmission device and radio communication device |
| 09/22/2005 | WO2005086957A2 Highly linear variable gain amplifier |
| 09/22/2005 | WO2005086690A2 Mosfet amplifier having feedback controlled transconductance |
| 09/22/2005 | WO2005086680A2 Current mode output stage circuit with open loop dc offset reduction |
| 09/22/2005 | US20050208922 Frequency mixer preventing degradation in linearity on amplitude of input signal |
| 09/22/2005 | US20050208921 Low noise amplifier with constant input impedance |
| 09/22/2005 | US20050208911 Amplifier circuits and their use in radio frequency transmitters |
| 09/22/2005 | US20050208910 Variable-gain low noise amplifier for digital terrestrial applications |
| 09/22/2005 | US20050208909 High-frequency power amplifier and communication apparatus |
| 09/22/2005 | US20050208907 Detecting and maintaining linearity in a power amplifier system through envelope power comparisons |
| 09/22/2005 | US20050208905 High frequency power amplifier module, and wireless communication system |
| 09/22/2005 | US20050207261 Common-mode current feedback amplifiers |
| 09/22/2005 | US20050207260 Current feedback amplifiers with separate common-mode and differential-mode inputs |
| 09/22/2005 | US20050206490 Double transformer balun for maximum power amplifier power |
| 09/22/2005 | US20050206457 Amplifier system and method |
| 09/22/2005 | US20050206456 High frequency power amplifier module and wireless communication apparatus |
| 09/22/2005 | US20050206455 Method to control the supply power being provided to a power amplifier |
| 09/22/2005 | US20050206454 Low noise op amp |
| 09/22/2005 | US20050206453 Common-mode feedback circuit |
| 09/22/2005 | US20050206452 Differential-mode current feedback amplifiers |
| 09/22/2005 | US20050206451 Input amplifier stage in the AB class having a controlled bias current |
| 09/22/2005 | US20050206450 AC differential amplifier with reduced low corner frequency |
| 09/22/2005 | US20050206449 Transconductance circuit |
| 09/22/2005 | US20050206444 Methods and systems for decoupling the stabilization of two loops |
| 09/22/2005 | US20050206442 Constant current circuit and active filter circuit using the same |
| 09/22/2005 | US20050206423 Latch circuit capable of ensuring race-free staging for signals in dynamic logic circuits |
| 09/22/2005 | DE102004006070B3 Verfahren und Schaltung zum Phasenabgleich von Verstärkermodulen Method and circuit for phase matching amplifier modules |
| 09/22/2005 | CA2559169A1 Highly linear variable gain amplifier |
| 09/21/2005 | EP1578014A1 Double transformer balun for maximum power transfer from power amplifier |
| 09/21/2005 | EP1578012A2 Amplifier and radio communication apparatus using the same |
| 09/21/2005 | EP1578011A1 Power amplifying apparatus |
| 09/21/2005 | EP1576726A1 Composite amplifier structure |
| 09/21/2005 | EP1576725A2 Thermal feedback for switch mode amplification |
| 09/21/2005 | EP1576724A2 Rf power amplifier employing bias circuit topologies for minimization of rf amplifier memory effects |
| 09/21/2005 | EP1297624B1 Dual bridge amplifier |
| 09/21/2005 | CN2728098Y Modularized digital constant voltage power amplifier |
| 09/21/2005 | CN1672324A Improved 2-stage large bandwidth amplifier using diodes in the parallel feedback structure |