| 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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| 09/16/1997 | US5668499 Tube type power amplifier with distortion control |
| 09/10/1997 | EP0794613A1 Low noise-high linearity HEMT-HBT composite |
| 09/10/1997 | CN1159259A Power combiner for use in radio frequency systema nd method of constructing power combiner |
| 09/10/1997 | CN1159098A Computing amplifier and digital signal transmission circuit |
| 09/09/1997 | US5666087 Active resistor for stability compensation |
| 09/09/1997 | CA2114264C Differential amplifier circuit having a driver with square-law characteristic |
| 09/09/1997 | CA2112203C Input amplifier circuit |
| 09/04/1997 | WO1997032394A1 Fat sound creation means |
| 09/02/1997 | US5664022 Noise gate control circuitry for electronic systems |
| 09/02/1997 | US5663988 Method and circuit arrangement for offset correction in a TDMA radio receiver |
| 09/02/1997 | US5663684 Wafer-stage adjustment for compensating for mismatches in temperature dependent IC components |
| 09/02/1997 | US5663681 Apparatus and method for stabilizing an amplifier |
| 09/02/1997 | US5663680 Chopper stabilized amplifier having an additional differential amplifier stage for improved noise reduction |
| 09/02/1997 | US5663673 Output circuit having at least one external transistor |
| 09/02/1997 | CA2121818C Sequential amplifier |
| 08/27/1997 | EP0792013A1 Operational amplification circuit |
| 08/27/1997 | EP0677220B1 Stable distortion amplifier for audio signals |
| 08/26/1997 | US5661438 Impedance matching circuit |
| 08/26/1997 | US5661437 Negative feedback variable gain amplifier circuit |
| 08/26/1997 | US5661436 For driving a video output load |
| 08/26/1997 | US5661435 Low noise wide band amplifier |
| 08/26/1997 | US5661434 High efficiency multiple power level amplifier circuit |
| 08/26/1997 | CA2116582C Rf amplifier bias control method and apparatus |
| 08/26/1997 | CA2098934C Circular limiter |
| 08/21/1997 | WO1997030521A1 Linear transmitter using predistortion |
| 08/21/1997 | WO1997030515A1 Method and apparatus providing limiting transimpedance amplification |
| 08/21/1997 | WO1997030514A1 Hybrid solid state/vacuum tube audio amplifier |
| 08/21/1997 | DE19705746A1 Vibration gyroscope for navigation system |
| 08/21/1997 | DE19629781C1 Bridge terminating stage impedance testing method |
| 08/21/1997 | CA2245707A1 Linear transmitter using predistortion |
| 08/20/1997 | EP0790703A1 Quiescent current control for the output stage of an amplifier |
| 08/20/1997 | EP0526557B1 Apparatus and method for reducing distortion in amplification |
| 08/20/1997 | CN1157676A Efficient linear power amplification |
| 08/19/1997 | US5659272 Amplitude modulation method and apparatus using two phase-modulated signals |
| 08/19/1997 | US5659261 Analog-to-digital converter and output driver |
| 08/14/1997 | WO1997029551A1 Method and circuit arrangement for reducing offset voltage of a signal |
| 08/14/1997 | DE19630112C1 Amplifier circuit using neuron MOSFET |
| 08/14/1997 | DE19630111C1 Self-adjusting amplifier operating point setting device e.g. for audio and video applications |
| 08/14/1997 | DE19604394A1 CMOS driver circuit for load |
| 08/13/1997 | EP0789452A1 A power amplifier with bootstrap voltage clamp |
| 08/13/1997 | EP0789451A1 High frequency amplifier and control |
| 08/13/1997 | EP0789450A2 An efficient RF CMOS amplifier with increased transconductance |
| 08/13/1997 | EP0788679A1 Power amplifier with switching power supply |
| 08/12/1997 | US5657020 Microwave pulse signal amplifier device |
| 08/07/1997 | WO1997028603A1 Distortion compensation for a capacitively loaded follower |
| 08/07/1997 | WO1997028598A1 Linearity enhancing circuit for power amplifier |
| 08/06/1997 | EP0787381A1 Am-fm transmitter power amplifier using class-bc |
| 08/06/1997 | EP0522114B1 Wave propagation signal transmission device and applications thereof for amplifiying such signals |
| 08/05/1997 | US5654672 Precision bias circuit for a class AB amplifier |
| 08/05/1997 | US5654671 Compensation circuit for input stage of high speed operational amplifier |
| 08/05/1997 | US5654669 Programmable instrumentation amplifier |
| 08/05/1997 | US5654668 High efficiency bridge amplifier |
| 08/05/1997 | US5654666 High input resistance circuit with base current compensation and method of compensating base current |
| 08/05/1997 | US5654663 Circuit for providing a compensated bias voltage |
| 07/30/1997 | EP0786899A2 Image signal read-out circuitry with offset correction |
| 07/30/1997 | EP0507926B1 Linear transmitter training method and apparatus |
| 07/30/1997 | CN1155782A Wide range variable output amplifier apparatus with high efficiency |
| 07/29/1997 | US5652547 Current comparator automatic output control |
| 07/29/1997 | US5652546 AM-FM transmitter power amplifier using class-BC |
| 07/29/1997 | US5652545 Wide-band amplifier |
| 07/23/1997 | EP0785617A2 Low noise-low distortion HEMT low noise amplifier (LNA) with monolithic tunable HBT active feedback |
| 07/23/1997 | EP0785501A2 Apparatus for eliminating audio noise when power is cycled to a computer |
| 07/23/1997 | CN1155184A Non-linear compensation circuit |
| 07/22/1997 | US5650926 Trace-and-track method |
| 07/22/1997 | US5650758 Pipelined digital predistorter for a wideband amplifier |
| 07/22/1997 | US5650753 Low-voltage rail-to-rail operational amplifier |
| 07/22/1997 | US5650752 Amplifier circuit with parallel connected amplifiers |
| 07/22/1997 | US5650748 Linear amplifying circuit |
| 07/22/1997 | US5650652 Input/output protection circuit and semiconductor device having the same |
| 07/22/1997 | CA2093060C Micropower amplifier/transducer driver with signal expansion |
| 07/17/1997 | WO1997025775A1 Linearized alternating voltage amplifier |
| 07/17/1997 | WO1997020221A3 Process and device for testing an impedance connected to a low-frequency amplifier |
| 07/16/1997 | EP0784379A1 Nonlinear compensating circuit |
| 07/16/1997 | EP0783767A1 Bipolar transistor for use in linear amplifiers |
| 07/16/1997 | CN1154768A Output power controller |
| 07/16/1997 | CN1154601A Pre-amplifier |
| 07/16/1997 | CN1154600A Linear power amplifying device and method |
| 07/15/1997 | US5648743 Amplifying circuit for an integrated circuit with low-noise characteristic |
| 07/15/1997 | US5648742 Amplifier circuit with reduced turn-on and turn-off transients |
| 07/15/1997 | US5648734 Buffer circuit and bias circuit |
| 07/10/1997 | WO1997024800A1 Efficient parallel-stage power amplifier |
| 07/10/1997 | WO1997024799A1 Differential amplifier with improved low-voltage linearity |
| 07/10/1997 | WO1997024798A1 Out-of-band compensation for non-linear device |
| 07/10/1997 | DE4227601C1 Call tone control for telephone handset |
| 07/09/1997 | EP0782789A1 Efficient linear power amplification |
| 07/09/1997 | CN1154183A Offset-compensated linear RF detector |
| 07/09/1997 | CN1154023A Amplifier having distortion compensation and base station for radio communication using the same |
| 07/08/1997 | US5647004 Multi-stage solid state amplifier that emulates tube distortion |
| 07/08/1997 | US5646576 Output stage of operational amplifier suitable for mounting on a substrate and method of amplifying therewith |
| 07/08/1997 | US5646575 Composite precision, high-frequency rail-to-rail amplifier |
| 07/08/1997 | US5646573 Automatic gain-control transimpedence amplifier |
| 07/08/1997 | US5646570 Apparatus for biasing a field effect transistor with a single voltage supply |
| 07/08/1997 | US5646518 PTAT current source |
| 07/03/1997 | DE19654295A1 Noise suppression control circuit especially for shot noise |
| 07/02/1997 | EP0782257A1 Impedance matching device for supply line |
| 07/02/1997 | EP0782250A1 Offset compensating method and circuit for MOS differential stages |
| 07/02/1997 | EP0782236A1 Circuit for the protection against overcurrents in power electronic devices, and corresponding method |
| 07/02/1997 | EP0781468A1 Improvements to a logarithmic converter |
| 07/01/1997 | US5644269 Cascode MOS current mirror with lateral bipolar junction transistor to enhance ouput signal swing |
| 07/01/1997 | US5644268 Feed forward RF amplifier for combined signal and error amplification |