| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 08/17/2005 | EP1256165B1 Low-voltage transconductance amplifier/filters |
| 08/17/2005 | CN2718895Y Non-transformer power amplifier |
| 08/17/2005 | CN2718894Y Electromagnetic bearing power amplifier utilizing PWM amplifier |
| 08/17/2005 | CN2718893Y Electromagnetic bearing power amplifier apparatus utilizing double-channel |
| 08/17/2005 | CN1656674A RF Power amplifier |
| 08/17/2005 | CN1656673A Fast cascaded class ab output stage with fet devices |
| 08/17/2005 | CN1656672A Power amplifiers |
| 08/17/2005 | CN1655446A High frequency power amplifier circuit and radio communication system |
| 08/17/2005 | CN1215644C Zero-delay slow-rate controlled output buffer |
| 08/17/2005 | CN1215388C Drive voltage controller |
| 08/16/2005 | US6931605 Simulated circuit layout for low voltage, low paper and high performance type II current conveyor |
| 08/16/2005 | US6931331 Measurement interface optimized for both differential and single-ended inputs |
| 08/16/2005 | US6930557 Multi-stage amplifier |
| 08/16/2005 | US6930556 Active-loop, spatially-combined amplifier |
| 08/16/2005 | US6930555 Amplifier power control circuit |
| 08/16/2005 | US6930554 Variable gain low noise amplifier and method |
| 08/16/2005 | US6930552 FET band amplifier |
| 08/16/2005 | US6930551 Zero voltage class AB minimal delay output stage and method |
| 08/16/2005 | US6930550 Self-biasing differential buffer with transmission-gate bias generator |
| 08/16/2005 | US6930548 Method and system for improving amplifier efficiency |
| 08/16/2005 | US6930546 Bypass switch topology for low-noise amplifiers |
| 08/16/2005 | US6930545 Switched-capacitor, common-mode feedback circuit for a differential amplifier without tail current |
| 08/16/2005 | US6930542 Differential gain boosting |
| 08/16/2005 | US6930531 Circuit and method to compensate for RMR variations and for shunt resistance across RMR in an open loop current bias architecture |
| 08/16/2005 | US6930529 Offset compensation circuit compensating for offset voltage of drive circuit as well as drive circuit with offset-compensation capability and liquid-crystal display device using the offset compensation circuit |
| 08/16/2005 | US6930512 One-level zero-current-state exclusive or (XOR) gate |
| 08/12/2005 | WO2005117253A1 Pulse width modulator system |
| 08/11/2005 | WO2005074136A1 Compound load for differential circuits |
| 08/11/2005 | WO2005074128A1 Variable gain circuit |
| 08/11/2005 | WO2005074127A1 A driver circuit |
| 08/11/2005 | WO2005074126A1 Switching cascode driver configuration |
| 08/11/2005 | WO2005074110A1 Switching power supply and semiconductor integrated circuit |
| 08/11/2005 | WO2005031965A3 Stacked rf power amplifier |
| 08/11/2005 | WO2005017956B1 Temperature-insensitive bias circuit for high-power amplifiers |
| 08/11/2005 | US20050176399 Field effect transistor amplifier with linearization |
| 08/11/2005 | US20050176388 Transmitter and wireless communication apparatus using the transmitter |
| 08/11/2005 | US20050174874 High-frequency power amplifier module |
| 08/11/2005 | US20050174178 Power amplifier module |
| 08/11/2005 | US20050174177 High-frequency integrated circuit device having high efficiency at the time of low power output |
| 08/11/2005 | US20050174176 Power amplification device |
| 08/11/2005 | US20050174175 Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit |
| 08/11/2005 | US20050174174 OP-amplifier with an offset voltage cancellation circuit |
| 08/11/2005 | US20050174172 Differential or single-ended amplifier and relative control method |
| 08/11/2005 | US20050174171 Multistage common mode feedback for improved linearity line drivers |
| 08/11/2005 | US20050174170 Amplifier switch |
| 08/11/2005 | US20050174169 Method of measuring microwave power and device for carrying out said method |
| 08/11/2005 | US20050174168 Differential preamplifier having balanced resistor network |
| 08/11/2005 | US20050174105 Testing apparatus |
| 08/11/2005 | US20050173767 Multiplier |
| 08/11/2005 | US20050173190 Roofmates™ roofing accessories |
| 08/11/2005 | DE102004003404A1 Multiple band antenna amplifier broadcast receiver has receivers for different frequency bands separated by low pass filters to reduce intermodulation problems |
| 08/11/2005 | DE102004001660A1 Amplifier circuit e.g. for mobile telecommunications, has transformer primary connected to first- and second-terminals of transistor |
| 08/11/2005 | DE102004001236A1 Power amplifier arrangement with antennas e.g. for transmission paths in mobile RF appliances, has signal paths each coupled to input and each comprising amplifier |
| 08/11/2005 | DE102004001094A1 Power amplifier arrangement e.g. for RF transmission device and mobile RF appliance, includes signal paths coupled by control device for activating and deactivating amplifiers |
| 08/10/2005 | EP1562287A1 Method and circuit for phase alignment of amplifier modules |
| 08/10/2005 | EP1562286A2 Distortion compensating device and power amplifying device with distortion compensating function |
| 08/10/2005 | EP1562284A1 Bias circuit with threshold voltage change compensation and temperature change compensation |
| 08/10/2005 | EP1561339A1 Read-out circuit for infrared detectors |
| 08/10/2005 | EP1561291A1 Amplitude and phase matching for layered modulation reception |
| 08/10/2005 | EP1506615A4 Method and apparatus for error compensation in a hybrid matrix amplification system |
| 08/10/2005 | EP1497914B1 Sensor circuit |
| 08/10/2005 | CN1653685A Signal amplifier and integrated circuit |
| 08/10/2005 | CN1653684A Power amplifier end stage |
| 08/10/2005 | CN1653683A Digital signal processor enhanced pulse width modulation amplifier |
| 08/10/2005 | CN1652566A Correlated-double-sampling amplifier in image sensing device |
| 08/10/2005 | CN1652455A Power controller for power amplifier of mobile communication terminal |
| 08/10/2005 | CN1214587C Method and apparatus for modulating radio signal using digital amplitude and phase control signals |
| 08/10/2005 | CN1214530C High-speed input buffer circuit for low-voltage interface |
| 08/10/2005 | CN1214522C Non-linear signal processor |
| 08/10/2005 | CN1214521C VF impedance adapting amplifier device for low frequency with electronic tubes insertible on line of path of low frequency signal |
| 08/10/2005 | CN1214520C Accurate power detection circuit for use in power amplifier |
| 08/10/2005 | CN1214519C Feedforward amplifier |
| 08/09/2005 | US6927644 Low-loss tunable ferro-electric device and method of characterization |
| 08/09/2005 | US6927634 Self-biased Darlington amplifier |
| 08/09/2005 | US6927633 High frequency circuit with thin film resistor |
| 08/09/2005 | US6927631 Wideband CMOS gain stage |
| 08/09/2005 | US6927630 RF power detector |
| 08/09/2005 | US6927629 Differential amplifier having improved balanced and linearity |
| 08/09/2005 | US6927626 Thermal protection system for an output stage of an amplifier |
| 08/09/2005 | US6927625 High frequency circuit using high output amplifier cell block and low output amplifier cell block |
| 08/09/2005 | US6927559 Constant voltage power supply |
| 08/04/2005 | WO2005071849A1 Transmitter apparatus and wireless communication apparatus |
| 08/04/2005 | WO2005071829A1 Radio frequency (rf) and/or microwave power amplification device and corresponding radio communication terminal |
| 08/04/2005 | WO2005057779B1 Eer modulator with power amplifier having feedback loop providing soft output impedance |
| 08/04/2005 | US20050171719 System and method for measuring essential power amplification functions |
| 08/04/2005 | US20050168860 Integrated bias and offset recovery amplifier |
| 08/04/2005 | US20050168601 Correlated-double-sampling (CDS) with amplification in image sensing device |
| 08/04/2005 | US20050168289 Receiver circuit having an optical reception device |
| 08/04/2005 | US20050168288 Low gate oxide stress power amplifier |
| 08/04/2005 | US20050168286 Bias circuit with threshold voltage change compensation function and temperature change compensation function |
| 08/04/2005 | US20050168285 Output impedance control circuit and control method thereof |
| 08/04/2005 | US20050168284 Operational amplifier with self control circuit for realizing high slew rate throughout full operating range |
| 08/04/2005 | US20050168281 High-frequency power amplification electronic part and wireless communication system |
| 08/04/2005 | US20050168278 Device and method for nullifying offset voltages in operational amplifiers |
| 08/04/2005 | US20050168276 Method for lowering noise and providing offset correction in a transimpedance amplifier |
| 08/04/2005 | US20050168275 Common mode feedback in high speed differential output circuits |
| 08/04/2005 | US20050168206 Bootstrap capacitor refresh circuit |
| 08/04/2005 | US20050168204 Attenuation control for digital power converters |
| 08/04/2005 | DE102004001434A1 Speicherbauelement Memory device |
| 08/03/2005 | EP1560412A1 xDSL-Line-Interface-Circuit |