| 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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| 04/23/1997 | EP0686321B1 Circuit and method for extending the safe operating area of a bjt |
| 04/23/1997 | EP0617859B1 Transimpedance amplifier |
| 04/23/1997 | CN1148289A Power amplifier circuit |
| 04/22/1997 | US5623229 Compensation circuit for input stage of high speed operational amplifier |
| 04/22/1997 | US5623228 Non-linear feedback network providing a linear transfer function |
| 04/22/1997 | US5623227 Amplifier circuit and method of controlling an amplifier for use in a radio frequency communication system |
| 04/22/1997 | US5623226 Automatic calibration of carrier suppression and loop phase in a Cartesian amplifier |
| 04/22/1997 | US5623220 Offset reduction in a zero-detect circuit |
| 04/18/1997 | WO1997015112A1 Amplifier circuit for rf system |
| 04/17/1997 | WO1997014212A1 An intermediate frequency amplifier and a method of producing a received signal strength indicator signal |
| 04/16/1997 | EP0768752A1 Low distortion power sharing amplifier network |
| 04/16/1997 | EP0768751A1 Improved offset cancellation for differential amplifiers |
| 04/16/1997 | EP0767989A1 Offset-compensated linear rf detector |
| 04/16/1997 | EP0767622A1 Electrical power amplifier for continuous cardiac output monitoring |
| 04/16/1997 | EP0639306B1 Method and apparatus for amplifying, modulating and demodulating |
| 04/15/1997 | US5621374 Amplifying circuit for simulating a unity gain buffer amplifier |
| 04/15/1997 | US5621357 For driving a load coupled to a circuit output terminal |
| 04/15/1997 | US5621356 Amplifier having a reduced distortion rate |
| 04/15/1997 | US5621354 Apparatus and method for performing error corrected amplification in a radio frequency system |
| 04/15/1997 | US5621352 Self-configurable, dual bridge, power amplifier |
| 04/15/1997 | US5621351 Modulation amplifier for radio transmitters |
| 04/15/1997 | US5621350 Circuit for amplifying a weak dircet voltage signal |
| 04/10/1997 | WO1997013320A1 Power amplifier and communication device |
| 04/10/1997 | DE19536281A1 Wide-band amplifier device with dc coupled cascade stages e.g. for ultrasonic device |
| 04/09/1997 | EP0767535A2 Radio frequency amplifier having improved CTB and cross modulation characteristics |
| 04/09/1997 | EP0767534A1 Signal processing circuit and method |
| 04/09/1997 | CN1034542C Control system including switching circuit for ensuring proper operation when operating power is removed from portion of control system |
| 04/08/1997 | US5619578 Multi-stage solid state amplifier that emulates tube distortion |
| 04/08/1997 | US5619168 Distortion creation and reduction circuit |
| 04/08/1997 | US5619152 Circuit arrangement for supplying an alternating signal current |
| 04/08/1997 | US5619122 Temperature dependent voltage generator with binary adjustable null voltage |
| 04/02/1997 | EP0766395A2 Power transistor with short-circuit protection |
| 04/02/1997 | EP0766379A1 Differential amplifier circuit for use in a read channel for a magnetic recording system |
| 04/02/1997 | EP0766378A2 Low distortion amplifier |
| 04/02/1997 | EP0766377A1 Current supply circuit for multiple power amplifiers |
| 04/02/1997 | CN1034458C Cartesian Multicarrier feedback |
| 04/01/1997 | US5617064 Active resistor for stability compensation |
| 04/01/1997 | US5617061 Feed-forward amplifier |
| 04/01/1997 | US5617058 Digital signal processing for linearization of small input signals to a tri-state power switch |
| 04/01/1997 | US5617054 Switched capacitor voltage error compensating circuit |
| 03/26/1997 | EP0765028A2 Amplifier arrangements |
| 03/26/1997 | EP0764364A2 An amplifier stage having a switchable gain and reduced distortion |
| 03/26/1997 | EP0764363A1 A linear bipolar junction transistor amplifier |
| 03/26/1997 | EP0764362A1 Linear microwave power amplifier with supply power injection controlled by the modulation envelope |
| 03/26/1997 | EP0687397B1 Electric power amplifier and process for its operation |
| 03/26/1997 | CN2250598Y Short circuit protector for insulation grating large power transistor |
| 03/25/1997 | US5614816 Low voltage reference circuit and method of operation |
| 03/20/1997 | WO1997010649A1 Intermodulation distortion reduction circuit utilizing variable attenuation |
| 03/20/1997 | WO1997010644A1 Linearized digital automatic gain control |
| 03/20/1997 | DE19544658C1 Loudspeaker impedance testing method |
| 03/19/1997 | EP0763224A1 Voltage regulator |
| 03/19/1997 | CN1145551A Improved class D amplifier and method |
| 03/19/1997 | CN1145550A DC offset compensation device |
| 03/18/1997 | US5612649 Inverter amplifier circuits |
| 03/12/1997 | EP0762637A2 Variable output amplifier |
| 03/12/1997 | EP0762631A2 Power amplification circuit |
| 03/12/1997 | EP0762630A1 Low distortion amplifier circuit with improved output power |
| 03/12/1997 | EP0762629A1 Low voltage bias current compensation circuit |
| 03/12/1997 | EP0676098B1 Procedure and circuit for adaptive compensation of the gain distortions of a microwave amplifier with linearizer |
| 03/11/1997 | US5610555 Low-voltage driven, audio signal amplifying apparatus and a portable acoustic system using said apparatus |
| 03/11/1997 | US5610554 Cancellation loop, for a feed-forward amplifier, employing an adaptive controller |
| 03/06/1997 | WO1997008822A1 Wideband power amplifier control systems |
| 03/06/1997 | CA2184550A1 Low voltage bias current compensation circuit |
| 03/05/1997 | EP0760184A1 In-line predistorter for linearization of electronic and optical signals |
| 03/05/1997 | EP0760165A1 Electronic device comprising means for compensating an undesired capacitance |
| 03/05/1997 | EP0760114A1 Dual voltage voltage regulator with foldback current limiting |
| 03/05/1997 | CN1144427A High-frequency amplifier, transmitting device and receiving device |
| 03/05/1997 | CN1144422A Output-controlled power amplifier, radio communication terminal and radio communication base station |
| 03/04/1997 | US5608353 HBT power amplifier |
| 03/04/1997 | US5608352 Differential input circuit capable of broadening operation range of input common mode potential |
| 03/04/1997 | US5608351 Amplifier circuit |
| 03/04/1997 | US5608347 Apparatus and method for dual slope calibration of a digitally calibrated transducer amplifier over temperature |
| 02/26/1997 | EP0759229A1 Low distortion differential transconductor output current mirror |
| 02/26/1997 | EP0759228A1 Continuous time programmable analog block architecture |
| 02/26/1997 | EP0759227A1 Phase linear class e amplifier for a satellite communication system |
| 02/26/1997 | EP0759226A1 Active resistor for stability compensation |
| 02/26/1997 | EP0563125A4 Dynamically biased amplifier |
| 02/26/1997 | CN2248422Y Audio frequency power amplification with modification of distortion line |
| 02/25/1997 | US5606289 Audio frequency power amplifiers with actively damped filter |
| 02/25/1997 | US5606287 Operational amplifier having stable operations for a wide range of source voltage, and current detector circuit employing a small number of elements |
| 02/25/1997 | US5606286 Predistortion linearization |
| 02/25/1997 | US5606281 Power amplifier stage of the voltage follower type |
| 02/19/1997 | EP0758501A1 Adaptive predistorter |
| 02/18/1997 | US5604462 Intermodulation distortion detection in a power shared amplifier network |
| 02/18/1997 | US5604461 Transformerless output vacuum tube audio amplifier |
| 02/18/1997 | US5604309 Electronics for Coriolis force and other sensors |
| 02/13/1997 | WO1997005721A1 Reducing peak-to-average variance of a composite transmitted signal via out-of-band artifact signaling |
| 02/13/1997 | WO1997005695A1 Field effect transistor cable television line amplifier |
| 02/13/1997 | WO1997005694A1 Predistortion linearization |
| 02/13/1997 | WO1997005693A1 An amplifier having function of reducing load reactance effect |
| 02/13/1997 | WO1996036106A3 Feedback amplifier with improved speed and accuracy |
| 02/12/1997 | EP0758164A1 Improved class D amplifier and method |
| 02/12/1997 | EP0758163A1 Improved distortion creation and reduction circuit |
| 02/12/1997 | EP0758162A2 DC offset compensation device |
| 02/12/1997 | EP0757857A1 Low-voltage cmos comparator |
| 02/12/1997 | EP0558526B1 Composite bridge amplifier |
| 02/11/1997 | US5602509 MOS operational transconductance amplifier using an adaptively-biased differential pair |
| 02/11/1997 | US5602508 Grounded-base transistor amplifier |
| 02/06/1997 | WO1997004523A1 Improvements to a logarithmic converter |
| 02/06/1997 | WO1997004522A1 Power combiner for use in radio frequency system and a method of constructing a power combiner |