| 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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| 07/28/2004 | EP1441290A2 Method and computer program for removing a pseudo signal having a lot of energy |
| 07/28/2004 | EP1440506A1 Rf power amplifier circuit |
| 07/28/2004 | EP1440230A1 Device for protecting an electronic circuit |
| 07/28/2004 | EP1317802B1 Self-tuned millimeter wave rf transceiver module |
| 07/28/2004 | EP1250753B1 Low-noise amplifier circuit and a method for amplifying low-power signals in a low-noise manner |
| 07/28/2004 | CN1516921A Pre-distortion using by-pass signal |
| 07/28/2004 | CN1516493A Power amplifier linearization method and linear power amplifier device |
| 07/28/2004 | CN1516336A 音频功率放大器 Audio Power Amplifier |
| 07/28/2004 | CN1159936C Power controller |
| 07/28/2004 | CN1159840C Feedforward amplifier |
| 07/27/2004 | US6768779 Pulse referenced control method for enhanced power amplification of a pulse modulated |
| 07/27/2004 | US6768382 Circuit and technique for accurate and efficient power amplifier sensing |
| 07/27/2004 | US6768381 Semiconductor power amplifier and multistage monolithic integrated circuit |
| 07/27/2004 | US6768379 Amplifier circuit |
| 07/27/2004 | US6768378 Distributed RF power amplifier with load compensation |
| 07/27/2004 | US6768377 Impedance matching low noise amplifier having a bypass switch |
| 07/27/2004 | US6768376 Dual mode class D amplifiers |
| 07/27/2004 | US6768370 Internal voltage step-down circuit |
| 07/27/2004 | US6768295 Offset calibration of current sharing signal for power supply units in redundant operation |
| 07/22/2004 | WO2004062225A1 Adaptive synchronization scheme |
| 07/22/2004 | WO2004062097A1 Quasi-linear multi-state digital modulation through non-linear amplifier arrays |
| 07/22/2004 | WO2004062096A2 Subtractor circuit and power detector device provided with said subtractor circuit |
| 07/22/2004 | WO2004062095A1 High efficiency power amplification apparatus with multiple power mode |
| 07/22/2004 | WO2004062092A1 Precorrection of a nonlinear amplifier |
| 07/22/2004 | WO2004062091A1 Feed forward amplifier system using penalties and floors for optimal control |
| 07/22/2004 | WO2004062090A2 Delay mismatched feed forward amplifier system using penalties and floors for control |
| 07/22/2004 | WO2004062088A2 Power amplifier circuit and method using bandlimited signal component estimates |
| 07/22/2004 | WO2004040403A3 Lower complexity layered modulation signal processor |
| 07/22/2004 | WO2004023648A3 Amplifier power control circuit |
| 07/22/2004 | WO2004015854A3 Monolithic, software-definable circuit including a power amplifier |
| 07/22/2004 | WO2003065569A3 Output circuit for a semiconductor amplifier element |
| 07/22/2004 | US20040143423 Methods and systems for data analysis |
| 07/22/2004 | US20040143407 Method for removing pseudo signal and program for removing pseudo signal |
| 07/22/2004 | US20040142667 Method of correcting distortion in a power amplifier |
| 07/22/2004 | US20040141562 Signal processing system with baseband noise modulaltion chopper circuit timing to reduce noise |
| 07/22/2004 | US20040141558 Signal processing system with baseband noise modulation and noise fold back reduction |
| 07/22/2004 | US20040141248 Preamplifier circuit and method for a disk drive device |
| 07/22/2004 | US20040140851 Apparatus, methods and articles of manufacture for control in an electromagnetic processor |
| 07/22/2004 | US20040140849 Negative feedback amplifier with electrostatic discharge protection circuit |
| 07/22/2004 | US20040140847 Segmented chopping amplifier |
| 07/22/2004 | US20040140480 Semiconductor device and power amplifier using the same |
| 07/22/2004 | DE10354413A1 Modellbasierte Vorwärtslinearisierung von Verstärkern Model-based forward linearization of amplifiers |
| 07/22/2004 | DE10327949A1 Verfahren und Vorrichtung zum Ansprechen auf Schwellenereignisse von Heterogenen Meßquellen Method and apparatus for responding to emerging events of heterogeneous Meßquellen |
| 07/22/2004 | DE10300892A1 Tunable switchable band-pass filter device for two frequency ranges, e.g. for television receiver, has second secondary resonant circuit connected to first primary resonant circuit |
| 07/22/2004 | DE10300011A1 Subtrahiererschaltung und Leistungsdetektoranordnung mit der Subtrahiererschaltung Subtractor circuit and power detector arrangement with the subtractor circuit |
| 07/22/2004 | DE10261388A1 Schaltung zur Arbeitspunkteinstellung von Mehrfach-Gate-Feldeffekttransistoren Circuit for operating point setting of multiple-gate field-effect transistors |
| 07/22/2004 | CA2514679A1 High efficiency power amplification apparatus with multiple power mode |
| 07/22/2004 | CA2512858A1 Precorrection of a nonlinear amplifier |
| 07/21/2004 | EP1438838A1 Adaptive bandwidth control in a kinescope amplifier |
| 07/21/2004 | EP0962120B8 High-fidelity and high-efficiency analog amplifier combined with digital amplifier |
| 07/21/2004 | CN1515069A Bias adjustment for power amplifier |
| 07/21/2004 | CN1514539A Gain changeable amplifier |
| 07/21/2004 | CN1158754C Biasing arrangement for field effect transistors |
| 07/21/2004 | CN1158753C Predistorter |
| 07/20/2004 | US6766152 Signal treating circuit with a class A/B output stage connectable to a source of multiple supply voltages |
| 07/20/2004 | US6766151 Distortion-compensating apparatus |
| 07/20/2004 | US6766026 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 07/20/2004 | US6765540 Tunable antenna matching circuit |
| 07/20/2004 | US6765443 Dynamic bias controller for power amplifier circuits |
| 07/20/2004 | US6765440 Model-based feed-forward linearization of amplifiers |
| 07/20/2004 | US6765439 Impedance matching for a power amplifier system |
| 07/20/2004 | US6765438 Transconductance power amplifier |
| 07/20/2004 | US6765437 Audio amplifying circuit |
| 07/20/2004 | US6765436 Power supply based audio compression for digital audio amplifier |
| 07/20/2004 | US6765377 Q-emphasized amplifier with inductor-based bandwidth booster |
| 07/20/2004 | CA2379300C Feedforward amplifier |
| 07/15/2004 | WO2004059850A2 Apparatus and method for safely handling asynchronous shutdown of pulsewidth modulated output |
| 07/15/2004 | WO2004059834A1 Electronic circuit for transmitting information |
| 07/15/2004 | WO2004059833A1 Circuit for adjusting the operating point of multiple gate field effect transistors |
| 07/15/2004 | WO2004059832A2 Bias-management system and method for programmable rf power amplifier |
| 07/15/2004 | WO2004027983A3 Saturated power amplifier with selectable and variable output power levels |
| 07/15/2004 | WO2004027982A3 Linear power amplifier with multiple output power levels |
| 07/15/2004 | US20040137856 Negative feedback amplifier for transmitter, transmitter, and method of correcting error in the negative feedback amplifier |
| 07/15/2004 | US20040136470 Uncorrelated adaptive predistorter |
| 07/15/2004 | US20040135637 High bandwidth and wide dynamic range preamplifier with high stability |
| 07/15/2004 | US20040135635 Amplifier circuitry |
| 07/15/2004 | US20040135634 Regulated power supply unit |
| 07/15/2004 | US20040135633 High frequency power amplification electric part and wireless communication system |
| 07/15/2004 | US20040135632 Variable gain amplifier |
| 07/15/2004 | US20040135631 Predistortion circuit, low-distortion power amplifier, and control methods therefor |
| 07/15/2004 | US20040135630 Composite amplifier with optimized linearity and efficiency |
| 07/15/2004 | US20040135627 Current feedback circuit and feedback amplifier using the same |
| 07/15/2004 | US20040135598 Input circuit |
| 07/15/2004 | DE10350244A1 Mit höherer Spannung betreibbare Niederspannungsschaltung Higher voltage operated low voltage circuit |
| 07/14/2004 | EP1437827A1 Power amplification device, in particular for a cellular mobile phone |
| 07/14/2004 | EP1437826A1 Linearisation of amplified feedback distortion |
| 07/14/2004 | EP1437825A1 Intermodulation product cancellation in communication systems |
| 07/14/2004 | EP1437023A1 Amplifier power detection circuitry |
| 07/14/2004 | EP1436764A1 Amplifier modulation |
| 07/14/2004 | EP1436737A1 Workflow mining system and method |
| 07/14/2004 | EP1224733B1 Adaptive linearization of power amplifiers |
| 07/14/2004 | EP1012967B1 A linear rf power amplifier with optically activated switches |
| 07/14/2004 | CN1513227A Reflection loss suppression circuit |
| 07/14/2004 | CN1512688A Clearing intermodulation product in communication |
| 07/14/2004 | CN1512664A 放大电路 Amplifier |
| 07/14/2004 | CN1512663A 电流反馈电路 Current feedback circuit |
| 07/14/2004 | CN1512662A Linearization of amplified back distortion |
| 07/14/2004 | CN1512661A Variable time constant circuit and filter circuit using it |
| 07/14/2004 | CN1512660A Electronic device with sound output device |
| 07/14/2004 | CN1157847C Amplifier and method of canceling distortion by combining hyperbolic tangent and hyperbolic sine transfer functions |