| 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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| 07/13/2004 | US6763470 System and method for dynamically amplifying a delayed analog signal based on amplitude information obtained from its digital representation |
| 07/13/2004 | US6762653 Microwave power amplifier |
| 07/13/2004 | US6762644 Apparatus and method for a nested transimpedance amplifier |
| 07/13/2004 | US6762641 Voltage level translation circuits |
| 07/13/2004 | US6762596 Constant voltage circuit and infrared remote control receiver using the same |
| 07/08/2004 | WO2004057758A1 Peak power limitation in an amplifier pooling scenario |
| 07/08/2004 | WO2004057757A1 Audio amplifier |
| 07/08/2004 | WO2004057756A1 Power amplifier with bias control |
| 07/08/2004 | WO2004057755A1 Composite amplifier structure |
| 07/08/2004 | WO2004051875B1 Digitally convertible radio |
| 07/08/2004 | WO2004023631A3 Power supply based audio compression for digital audio amplifier |
| 07/08/2004 | WO2004019483A3 Providing dc isolation in switching amplifiers |
| 07/08/2004 | US20040131210 Amplifying circuit |
| 07/08/2004 | US20040131193 Audio reproducing device and method, audio amplifier, and integrated circuit for audio amplifier |
| 07/08/2004 | US20040130667 Matching unit |
| 07/08/2004 | US20040130399 Low noise amplifiers |
| 07/08/2004 | US20040130396 VHF/UHF broadband high power amplifier module |
| 07/08/2004 | US20040130395 Current steering circuit for amplifier |
| 07/08/2004 | US20040130394 Precorrection of a nonlinear amplifier |
| 07/08/2004 | US20040130392 Multi-band amplifier |
| 07/08/2004 | US20040130391 High efficiency power amplifier with multiple power modes |
| 07/08/2004 | US20040130378 Leak current compensating device and leak current compensating method |
| 07/08/2004 | US20040130374 Bias circuit linearization and dynamic power control |
| 07/07/2004 | EP1435693A1 Amplification circuit |
| 07/07/2004 | CN1511372A Power amplifier array with same type predistortion amplifier |
| 07/07/2004 | CN1511371A 前馈放大器 Feedforward amplifier |
| 07/07/2004 | CN1511320A Method and apparatus for compensation of second order distortion |
| 07/07/2004 | CN1511261A Low-loss tunable ferro-electric device and method of characterization |
| 07/07/2004 | CN1510832A Linear power amplifying method and linear power amplifier |
| 07/07/2004 | CN1510831A Bias circuit of radio frequency power amplifier |
| 07/07/2004 | CN1156990C Active biased network circuit for radio frequency amplifier |
| 07/07/2004 | CN1156960C Method and device for regulating parameters of power apparatus |
| 07/07/2004 | CN1156912C Side-feeding radio-frequency amplifier |
| 07/06/2004 | US6760604 Portable radio transceiver having shared power source for audio and RF amplifiers |
| 07/06/2004 | US6759908 High frequency power amplifier |
| 07/06/2004 | US6759907 Distributed level-shifting network for cascading broadband amplifiers |
| 07/06/2004 | US6759906 High frequency power amplifier circuit device |
| 07/06/2004 | US6759903 Amplifier |
| 07/06/2004 | US6759900 High bandwidth and wide dynamic range preamplifier with high stability |
| 07/06/2004 | US6759897 Circuit for reducing second and third order intermodulation distortion for a broadband RF amplifier |
| 07/06/2004 | US6759868 Circuit and method for compensation if high-frequency signal loss on a transmission line |
| 07/06/2004 | US6759701 Transistor circuit |
| 07/01/2004 | WO2004056061A2 Adaptive controller for linearization of transmitter |
| 07/01/2004 | WO2004055976A1 Distortion compensation table creation method and distortion compensation method |
| 07/01/2004 | WO2004055975A1 Phase-error based signal alignment |
| 07/01/2004 | WO2004055974A1 Adaptive controller for linearization of transmitter |
| 07/01/2004 | WO2004055973A1 Sliding bias circuit for enabling dynamic control of quiescent current in a linear power amplifier |
| 07/01/2004 | WO2004055972A1 Self adaptable bias circuit for enabling dynamic control of quiescent current in a linear power amplifier |
| 07/01/2004 | WO2004045091A3 Rf circuit with frequency agile sequential amplifiers |
| 07/01/2004 | WO2004038910A3 Predistortion linearizing |
| 07/01/2004 | WO2003100966A3 Predistortion control apparatus |
| 07/01/2004 | WO2003096548A3 Method for producing a transmission signal |
| 07/01/2004 | WO2003094342A3 Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals |
| 07/01/2004 | WO2003084054A3 Amplifier and frequency converter |
| 07/01/2004 | WO2003075452B1 Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity |
| 07/01/2004 | WO2002103897A8 Pre-distortion using a by-pass signal |
| 07/01/2004 | US20040127183 Intermodulation product cancellation in communications |
| 07/01/2004 | US20040125968 Monolithic class D amplifier |
| 07/01/2004 | US20040125885 Intermodulation product cancellation in communications |
| 07/01/2004 | US20040124928 Multistage amplifier and integrated circuit |
| 07/01/2004 | US20040124927 Transimpedance amplification apparatus with source follower structure |
| 07/01/2004 | US20040124924 Active load device that enables biasing of a very wide band distributed amplifier circuit with gain control |
| 07/01/2004 | US20040124920 Delay mismatched feed forward amplifier system using penalties and floors for control |
| 07/01/2004 | US20040124918 Wideband common-mode regulation circuit |
| 07/01/2004 | US20040124917 Variable gain amplifier |
| 07/01/2004 | US20040124916 Quasi-linear multi-state digital modulation through non-linear amplifier arrays |
| 07/01/2004 | US20040124914 Switching amplification apparatus |
| 07/01/2004 | US20040124913 Power amplifier circuit and method using bandlimited signal component estimates |
| 07/01/2004 | DE10260291A1 Elektronische Schaltung zur Informantionsübertragung An electronic circuit for Informa tion transfer |
| 07/01/2004 | DE10259393A1 Amplifier circuit especially low frequency amplifier has passive frequency diplexer that divides signal amplified by power amplifier into two paths and has passive negative feedback between frequency diplexer and power amplifier |
| 06/30/2004 | EP1434348A1 Wideband common-mode regulation circuit |
| 06/30/2004 | EP1433253A1 Method and apparatus for impedance matching in an amplifier using lumped and distributed inductance |
| 06/30/2004 | EP1433252A2 High speed output buffers using voltage followers |
| 06/30/2004 | EP1433251A2 Rf power amplifier |
| 06/30/2004 | EP1433250A1 An adaptive linearization technique for communication building block |
| 06/30/2004 | EP1433236A1 Power supply regulation and protection circuit for audio power amplifier |
| 06/30/2004 | EP1433185A1 Interface module for a controlled component |
| 06/30/2004 | EP1020026B1 Apparatus and method for amplifying a signal |
| 06/30/2004 | EP0983631B1 Power amplifier and method therein |
| 06/30/2004 | CN2622932Y Integrated clipping amplifier |
| 06/30/2004 | CN1156121C Pulse shaping which compensater for component distortion |
| 06/30/2004 | CN1156073C Improved feedforward multicarrier linear RF power amplifier |
| 06/30/2004 | CN1156072C Feed forwark amplifier with digital intermodulation control |
| 06/29/2004 | US6757526 Battery life extending technique for mobile wireless applications using bias level control |
| 06/29/2004 | US6757525 Distortion compensating apparatus |
| 06/29/2004 | US6757338 Predistortion linearizer using even order intermodulation components |
| 06/29/2004 | US6756947 Tunable slot antenna |
| 06/29/2004 | US6756928 Pseudo-differential amplifier and analog-to-digital converter using the same |
| 06/29/2004 | US6756852 Method for reducing output noise of a power amplifier |
| 06/29/2004 | US6756850 High frequency power amplifier circuit |
| 06/29/2004 | US6756845 Method and system for compensating non-linearities and time-varying changes of a transfer function acting on an input signal |
| 06/29/2004 | US6756844 Distortion compensation amplification apparatus of feed forward type and adaptive pre-distortion type |
| 06/24/2004 | WO2004054098A1 Mos voltage to current transducer |
| 06/24/2004 | WO2004054097A1 Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase |
| 06/24/2004 | WO2004054096A1 Preserving linearity of an isolator-free power amplifier by dynamically adjusting bias and supply of active devices |
| 06/24/2004 | WO2004054095A1 Preserving linearity of an isolator-free power amplifier by dynamically switching active devices |
| 06/24/2004 | WO2004054094A1 Amplifier circuit having an extended wilson current-mirror self-bias boosting circuit |
| 06/24/2004 | WO2004054093A2 Amplifier circuit having an impedance-controllable bias-boosting circuit |
| 06/24/2004 | WO2004034567A3 Apparatus, methods and articles of manufacture for linear signal modification |
| 06/24/2004 | WO2004023776A3 Communication arrangement and transmission unit for information transfer by means of at least one transmission line and a circuit arrangement for connection to the transmission unit |