| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 07/01/1997 | US5644264 Output circuit with short circuit protection for a CMOS comparator |
| 07/01/1997 | US5644263 Ground loop elimination |
| 07/01/1997 | CA2086541C Power amplifier saturation detection and correction method and apparatus |
| 06/26/1997 | WO1997023037A1 Amplifier using a single polarity power supply |
| 06/26/1997 | DE19620693C1 Audio power amplifier circuit with slow load current growth and decay |
| 06/26/1997 | DE19545387A1 Signal voltages amplification by pre-amplifier |
| 06/25/1997 | CN1035298C Series-parallel feedback wide-band transistor amplifier |
| 06/24/1997 | US5642378 Dual mode analog and digital cellular phone |
| 06/24/1997 | US5642080 Low noise amplifier in monolithic integrated circuit |
| 06/24/1997 | US5642079 Amplifier with pole/zero compensation |
| 06/24/1997 | US5642078 Amplifier having frequency compensation by gain degeneration |
| 06/24/1997 | US5642077 Wide band constant gain amplifier |
| 06/24/1997 | US5642076 No turn-on pop noise amplifier |
| 06/24/1997 | US5642074 Amplifier circuit with reduced turn-on and turn-off transients |
| 06/24/1997 | US5642070 Signal processing circuit and system for detection of absolute value |
| 06/24/1997 | US5642062 Comparator circuit operating on variable current |
| 06/18/1997 | EP0779705A2 Inverted amplifying circuit |
| 06/18/1997 | EP0778998A2 A linearizer for linearizing a non-linear component controlled by control voltage |
| 06/18/1997 | EP0676099B1 Circuit arrangement for an integrated output amplifier |
| 06/18/1997 | CN1152362A Voltage regulator |
| 06/18/1997 | CN1152361A Dual voltage voltage regulator with foldback current limiting |
| 06/18/1997 | CN1152212A Linear power amplifier using active bias for high efficiency and method thereof |
| 06/17/1997 | US5640692 Transmission system for the transmit part of a terminal associated with a digital mobile radio installation |
| 06/17/1997 | US5640128 Transimpedance amplifier circuit |
| 06/17/1997 | US5640127 Input protection for high bandwidth amplifier |
| 06/17/1997 | US5640110 Current supply circuit |
| 06/12/1997 | DE19650521A1 Protective circuit for audio amplifier |
| 06/12/1997 | DE19611026C1 Noise suppression for hearing aid with signal level dependent AGC |
| 06/11/1997 | EP0778509A1 Temperature compensated reference current generator with high TCR resistors |
| 06/11/1997 | EP0777932A1 Active bias for radio frequency power amplifier |
| 06/10/1997 | US5638404 Pre-compensated frequency modulation (PFM) |
| 06/10/1997 | US5638026 High input impedance circuit and semiconductor integrated device provided therewith |
| 06/10/1997 | US5638025 Amplified output stage containing N-channel output transistors and capacitive coupling stage |
| 06/10/1997 | US5638024 Waste energy control and management in power amplifiers |
| 06/10/1997 | US5637993 Error compensated current mirror |
| 06/10/1997 | US5637992 Voltage regulator with load pole stabilization |
| 06/10/1997 | US5636638 Electrical power amplifier for continuous cardiac output monitoring |
| 06/10/1997 | CA2120216C Quadrature modulator |
| 06/05/1997 | WO1997020387A1 Circuit for briefly muting the reproduction of a low-frequency signal in a radio receiver |
| 06/05/1997 | WO1997020221A2 Process and device for testing an impedance connected to a low-frequency amplifier |
| 06/05/1997 | DE19641840A1 Treiberschaltung für Hochleistungs-Halbleiterbauteile mit MOS-Gatesteuerung Driving circuit for high-power semiconductor components with a MOS gated |
| 06/05/1997 | DE19544438A1 Schaltungsanordnung zum kurzzeitigen Stummschalten der Wiedergabe eines NF-Signals in einem Rundfunkempfänger Circuit arrangement for momentarily muting the reproduction of an AF signal in a radio receiver |
| 06/04/1997 | EP0777336A1 PSK Broadcast transmitter and predistortion method |
| 06/04/1997 | EP0777323A2 Power amplifier for an inductive load |
| 06/04/1997 | EP0777322A1 Voltage amplifier with wide dynamic range and A/D converter using such amplifier |
| 06/04/1997 | EP0777321A2 Amplification of a voltage having wide variation and A-D converter comprising such an amplifier |
| 06/04/1997 | EP0777320A1 Low-power transconductance driver amplifier |
| 06/04/1997 | EP0777319A1 Operational amplifier having an adjustable frequency compensation |
| 06/04/1997 | EP0777318A1 Frequency self-compensated operational amplifier |
| 06/04/1997 | CN1151229A In-line predistorted for linearization of electronic and optical signals |
| 06/03/1997 | US5636284 Solid state emulation of vacuum tube audio power amplifiers |
| 06/03/1997 | US5635884 Grounded inductance circuit using gyrator circuit |
| 06/03/1997 | US5635874 Stable distortion amplifier for audio signals |
| 06/03/1997 | US5635872 Variable control of electronic power supplies |
| 06/03/1997 | US5635871 Low phase error amplifying |
| 06/03/1997 | US5635870 Efficient amplification techniques for non-linear amplifiers |
| 06/03/1997 | US5635726 Electro-optical sensor for marks on a sheet |
| 06/03/1997 | US5634470 System and method for monitoring and controlling the temperature of a catheter-mounted heater |
| 05/31/1997 | WO1997020385A1 Doherty-type amplifier and tuning method |
| 05/31/1997 | CA2204409A1 Amplifier circuit and method of tuning the amplifier circuit |
| 05/29/1997 | WO1997019445A1 Arrangement comprising a magnetic write head, and write amplifier with capacitive feed-forward compensation |
| 05/28/1997 | EP0776088A2 Amplifier output stage |
| 05/28/1997 | EP0776087A1 CMOS transconductance amplifier with dynamic biasing |
| 05/28/1997 | CN1150720A Output stage of operational amplifier suitable for mounting on substrate and method of amplifying therewith |
| 05/28/1997 | CN1150719A Low distortion amplifier circuit with improved output power |
| 05/27/1997 | US5633940 Audio amplifier arrangement |
| 05/27/1997 | US5633610 Monolithic microwave integrated circuit apparatus |
| 05/22/1997 | WO1997018627A1 Variable control of electronic power supplies |
| 05/22/1997 | WO1997018626A1 Small signal linearization in power switching amplifiers |
| 05/21/1997 | EP0774833A1 Amplifying device |
| 05/21/1997 | EP0774704A2 Low voltage reference circuit and method of operation |
| 05/21/1997 | CN1150504A Linear microwave power amplifier with supply power injection controlled by modulation envelope |
| 05/20/1997 | US5631608 Driver for N-channel VFET output stage of power amplifier |
| 05/20/1997 | US5631604 Waste energy control and management in power amplifiers |
| 05/20/1997 | US5631603 Offset cancellation for differential amplifiers |
| 05/20/1997 | US5631599 Two stage current mirror |
| 05/20/1997 | CA2045259C Solid state power amplifier with dynamically adjusted operating point |
| 05/15/1997 | WO1997017773A1 Non-linearity estimation method and device |
| 05/14/1997 | EP0773625A1 Variable gain amplifying device |
| 05/14/1997 | CN1149942A Negative-resistance-compensated microwave buffer |
| 05/14/1997 | CN1149788A High-gain amplifier capable of protecting parasitic oscillation |
| 05/13/1997 | US5629648 For providing thermally stable radio frequency power amplification |
| 05/13/1997 | US5629536 High voltage current limiter and method for making |
| 05/13/1997 | CA2085117C Power amplifier |
| 05/07/1997 | EP0772273A1 Sensor of the instant power dissipated in a power transistor |
| 05/07/1997 | DE19620839A1 Operational amplifier with differential transistor pair |
| 05/07/1997 | DE19541219A1 Amplifier circuit with two amplifiers |
| 05/07/1997 | DE19540858A1 Analog sensor unit esp. for automobile and commercial motor vehicles pressure and brakes lining wear measurement |
| 05/06/1997 | US5628059 DC offset circuit for cartesian loop |
| 05/06/1997 | US5627857 Linearized digital automatic gain control |
| 05/06/1997 | US5627490 Amplifier circuit |
| 05/02/1997 | EP0771068A1 Bias controller for decreasing bias current supplied to amplifier without sacrifice of distortion |
| 05/02/1997 | EP0770283A1 Feedback amplifier with improved speed and accuracy |
| 04/29/1997 | US5625566 Configuration dependent auto-biasing of bipolar transistor |
| 04/29/1997 | US5625323 FET gate bias circuit |
| 04/29/1997 | US5625322 Amplifier bias control device |
| 04/29/1997 | US5625313 Cascode circuit operable at a low working voltage and having a high output impedance |
| 04/24/1997 | WO1997015113A1 Apparatus and method for performing error corrected amplification in a radio frequency system |
| 04/24/1997 | WO1997015025A1 Electro-optical sensor |
| 04/23/1997 | EP0769848A2 A gain stage and offset volage elimination method |