| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 12/03/1997 | EP0809881A1 Amplifiers |
| 12/03/1997 | EP0639307B1 Modulation amplifier for radio transmitters |
| 12/02/1997 | US5694433 Efficient linear power amplification |
| 12/02/1997 | US5694084 Wide-band amplifier circuits |
| 12/02/1997 | US5694082 Circuit arrangement for determining intermodulation products |
| 12/02/1997 | US5694071 Electronic device comprising means for compensating an undesired capacitance |
| 12/02/1997 | US5694069 Variable resistor and gain control circuit and integrated circuit having the variable resistor |
| 11/27/1997 | WO1997044895A2 Amplifier with active-bootstrapped gain-enhancement technique |
| 11/27/1997 | WO1997044894A1 Error path control for feed-forward amplifier |
| 11/27/1997 | CA2227313A1 Method and apparatus for improving error path control in a feed-forward amplifier |
| 11/26/1997 | EP0809355A2 Amplifier circuit |
| 11/26/1997 | EP0809353A2 Amplifier for cancelling noise between circuit systems |
| 11/26/1997 | EP0809352A1 Inverted amplifying circuit |
| 11/26/1997 | EP0809351A2 Differential amplifier circuit |
| 11/26/1997 | CN1166247A Improvements to a logarithmic converter |
| 11/26/1997 | CN1166246A Power amplifier and communication device |
| 11/26/1997 | CN1166244A Amplifier circuit and method for controlling amplifier in RF system |
| 11/26/1997 | CN1036560C Appts. and method for frequency compensating an operational amplifier |
| 11/25/1997 | US5691668 Feedforward amplifier |
| 11/25/1997 | US5691663 Single-ended supply preamplifier with high power supply rejection ratio |
| 11/20/1997 | WO1997043825A1 Fully differential voltage controlled operational transconductance amplifier |
| 11/20/1997 | WO1997043824A1 Pre-post distortion amplifier |
| 11/19/1997 | CN1165430A Amplifier circuit for transmitter |
| 11/19/1997 | CN1165427A Operational amplification circuit |
| 11/18/1997 | US5689211 Integrated circuit |
| 11/18/1997 | CA2075011C Linear compensating circuit |
| 11/13/1997 | DE19718109A1 Linear amplifier with transistor pair |
| 11/12/1997 | EP0806087A1 Method and apparatus for a linear transmitter |
| 11/12/1997 | EP0806081A1 Circuit for briefly muting the reproduction of a low-frequency signal in a radio receiver |
| 11/12/1997 | CN1164776A Single-ended supply preamplifier with high power supply rejection ratio |
| 11/11/1997 | US5687195 Digital automatic gain controller for satellite transponder |
| 11/11/1997 | US5686860 Amplifier and controlling apparatus operating from a unipolar power supply |
| 11/11/1997 | US5686826 Ambient temperature compensation for semiconductor transducer structures |
| 11/11/1997 | US5686825 For a semiconductor memory device |
| 11/06/1997 | WO1997041642A1 Transmitter combiner arrangement |
| 11/06/1997 | DE19717561A1 Capacitive coupled circuit with diode biassed differential amplifier |
| 11/05/1997 | EP0805551A1 Semiconductor circuit |
| 11/05/1997 | EP0805550A1 DC coupled broadband amplifier with low offset |
| 11/05/1997 | EP0804789A1 Arrangement comprising a magnetic write head, and write amplifier with capacitive feed-forward compensation |
| 11/04/1997 | US5684433 Dual-feedback amplifier circuit arrangements |
| 11/04/1997 | US5684430 Power amplifier adapted to simplify adjustment work for preventing occurrence of parasitic oscillation |
| 10/30/1997 | WO1997040577A1 Process for controlling the power of the transmission amplifier of radio equipment |
| 10/29/1997 | EP0803986A1 Liquid cooling system for high power solid state am transmitter |
| 10/29/1997 | EP0803978A2 Tone control device and sound volume/tone control device for reducing noise at the time of tone modification |
| 10/29/1997 | EP0803974A1 Broadband amplifier with quadrature pilot signal |
| 10/29/1997 | EP0803973A1 Linear power amplifier with automatic gate/base bias control for optimum efficiency |
| 10/28/1997 | US5682121 No turn-on pop noise amplifier |
| 10/28/1997 | US5682111 Integrated circuit with power monitor |
| 10/23/1997 | DE19615842A1 Verfahren zur Steuerung der Leistung eines Sendeverstärkers eines Funkgerätes Method for controlling the power of a transmission amplifier of a radio |
| 10/23/1997 | DE19615285A1 Controlled push=pull audio amplifier |
| 10/22/1997 | EP0802626A1 Wide band distributed amplifier with temperature compensation |
| 10/21/1997 | US5680074 Tube amplifier having specific configuration with four tubes |
| 10/15/1997 | EP0705499B1 Device for amplifying television signals with a predetermined variable operating class for preventing transmission errors |
| 10/15/1997 | EP0585421A4 High dynamic range modulation independent feed forward amplifier network |
| 10/15/1997 | CN1162374A Method and apparatus for linear transmitter |
| 10/14/1997 | US5677962 Hybrid analog and digital amplifier with a delayed step change in the digital gain |
| 10/14/1997 | US5677646 Integrated circuit differential amplifier |
| 10/14/1997 | CA2144420C Circuit arrangement for an integrated output amplifier |
| 10/14/1997 | CA2045330C Fast settling, wide dynamic range vector modulator |
| 10/09/1997 | WO1997037427A1 Adaptive amplifier distortion compensation circuit |
| 10/08/1997 | EP0799523A1 Receiver circuit |
| 10/08/1997 | EP0799459A1 Electro-optical sensor |
| 10/08/1997 | CN1036105C Linear amplifier control |
| 10/08/1997 | CA2199654A1 Liquid cooling system for high power solid state am transmitter |
| 10/07/1997 | US5675656 Power amplifier with clipping level control |
| 10/07/1997 | US5675613 Distortion compensator |
| 10/07/1997 | US5675478 Oscillator voltage regulator |
| 10/07/1997 | US5675290 Microwave amplifier circuit |
| 10/07/1997 | US5675288 Method of linearizing a non-linear amplifier, linearization circuit and amplifier including a circuit of this kind |
| 10/07/1997 | US5675287 Digital DC correction circuit for a linear transmitter |
| 10/07/1997 | US5675286 Method and apparatus for an improved linear transmitter |
| 10/07/1997 | US5675285 Multichannel predistortion linearizer for multiple amplifiers with multiple antennas |
| 10/07/1997 | US5675281 Method and circuit for preventing forward bias of a parasitic diode in an integrated circuit |
| 10/07/1997 | US5675242 Semiconductor integrated circuit |
| 10/07/1997 | US5675184 Integrated circuit device |
| 10/02/1997 | DE19644125A1 Capacitive sensor interface circuit for use in capacitance detector circuit for vehicle movement detection |
| 10/01/1997 | EP0797869A1 Apparatus and method for performing error corrected amplification in a radio frequency system |
| 10/01/1997 | EP0797868A1 Amplifier circuit for rf system |
| 10/01/1997 | EP0797867A1 Low voltage linear output buffer operational amplifier |
| 10/01/1997 | EP0469143B1 Push-pull optical receiver |
| 09/30/1997 | US5673002 Operational amplifier having stable operations for a wide range of source voltage, and current detector circuit employing a small number of elements |
| 09/30/1997 | US5673001 Method and apparatus for amplifying a signal |
| 09/30/1997 | US5673000 Dynamically invariant AB linear operation amplifier |
| 09/30/1997 | US5672998 Class D amplifier and method |
| 09/30/1997 | US5672949 Electronics for Coriolis force and other sensors |
| 09/30/1997 | CA2056098C Balanced cascode current mirror |
| 09/25/1997 | WO1997035390A1 Predistortion circuit for an analog signal in a video communication network |
| 09/24/1997 | EP0797294A1 Method for correcting non-linear distortion of an amplifier and radio transmitter using such method |
| 09/24/1997 | EP0797293A1 Method for correcting non-linear distortion of an amplifier and radio transmitter using such method |
| 09/24/1997 | EP0796522A1 An intermediate frequency amplifier and a method of producing a received signal strength indicator signal |
| 09/24/1997 | CN1160311A Mute control circuit |
| 09/23/1997 | US5670912 Variable supply biasing method and apparatus for an amplifier |
| 09/23/1997 | US5670911 FET amplifier and bias power supply circuit for commonly amplifying multi-radio frequency (RF) signals |
| 09/23/1997 | US5670850 Video circuit and video signal processing and control techniques for controlling the "tilt" of a video display that may be implemented with LinBiCMOS technology |
| 09/22/1997 | CA2200660A1 Method of correcting nonlinearities of an amplifier, and radio transmitter employing a method of this type |
| 09/18/1997 | WO1997034369A1 Pulse waveform generator |
| 09/18/1997 | DE19609967A1 Protective circuit against thermal overload for switching stage |
| 09/17/1997 | EP0795956A1 Power amplifier and communication device |
| 09/17/1997 | EP0705438B1 Measurement amplifier |
| 09/16/1997 | US5668502 Amplifier stage having a switchable gain and reduced distortion |