| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/27/1998 | US5712557 Constant current supply circuit with stabilization based on voltage and current ratios relative to a reference voltage and a related control current |
| 01/22/1998 | DE19628770A1 Travelling wave tube amplifier power output variation method |
| 01/21/1998 | EP0819339A1 Distortion compensation for a capacitively loaded follower |
| 01/21/1998 | CN1170989A Novel seiconductor tube Hi-Fi electroaconstic power amplifier |
| 01/21/1998 | CN1170988A Amplifier circuit and multistage amplifier circuit |
| 01/20/1998 | US5710523 Low noise-low distortion hemt low noise amplifier (LNA) with monolithic tunable HBT active feedback |
| 01/20/1998 | US5710522 Amplifier having an active current source |
| 01/20/1998 | US5710520 Pulse step modulator and transformer |
| 01/15/1998 | WO1998001964A1 Modular transmission system and method |
| 01/15/1998 | WO1998001946A1 Controller-based radio frequency amplifier module and method |
| 01/15/1998 | WO1997043826A3 Gain control |
| 01/14/1998 | EP0818879A2 Amplifier circuit and multistage amplifier circuit |
| 01/14/1998 | EP0818878A1 Current sense circuit |
| 01/14/1998 | EP0818877A2 Offset compensation circuit |
| 01/14/1998 | EP0699359B1 Polarization current controlled electronic circuit such as an adjustable resistance, a negative resistance or a filter or similar |
| 01/14/1998 | EP0632941B1 Optical receiver |
| 01/14/1998 | CN1037056C Amplifier for use in radiotelephone |
| 01/13/1998 | US5708607 Data read circuit of a memory |
| 01/13/1998 | US5708393 High voltage operational amplifier output stage |
| 01/13/1998 | US5708392 Method and apparatus for providing limiting transimpedance amplification |
| 01/13/1998 | US5708390 Signal amplifier arrangeable in two different configuration modes |
| 01/13/1998 | US5708376 Variable-gain amplifying device |
| 01/13/1998 | US5708373 Boost circuit |
| 01/13/1998 | US5708292 Power amplification circuit |
| 01/08/1998 | WO1998000912A1 Bias circuit for a power amplifier |
| 01/08/1998 | WO1998000911A1 Differential amplifier |
| 01/08/1998 | WO1998000909A1 Device and method for compensating phase distortion |
| 01/08/1998 | WO1997042704A3 Degenerated differential pair with controllable transconductance |
| 01/08/1998 | CA2257887A1 Bias circuit for a power amplifier |
| 01/07/1998 | EP0817373A2 Negative feedback amplifier |
| 01/07/1998 | EP0817372A2 Voltage to current conversion circuit for converting voltage to multiple current outputs |
| 01/07/1998 | EP0817371A1 Silent start class D amplifier |
| 01/07/1998 | EP0817275A2 High-frequency FET |
| 01/07/1998 | EP0816857A2 Differential attenuator common mode rejection correction circuit |
| 01/06/1998 | US5706240 Voltage regulator for memory device |
| 01/06/1998 | US5705953 Device bias based supplemental amplification |
| 01/06/1998 | US5705952 Operational amplifier circuit |
| 01/06/1998 | US5705951 Method for correction of error signals in a signal amplification system and an apparatus used for that purpose |
| 01/06/1998 | US5705950 Hybrid solid state/vacuum tube audio amplifier |
| 01/06/1998 | US5705807 Photo detecting apparatus for detecting reflected light from an object and excluding an external light componet from the reflected light |
| 01/06/1998 | CA2129305C Failure responsive alternate amplifier and bypass system for communications amplifier |
| 12/31/1997 | WO1997050172A1 Low power audio device |
| 12/31/1997 | WO1997044895A3 Amplifier with active-bootstrapped gain-enhancement technique |
| 12/31/1997 | CN1169200A Arrangement comprising a magnetic write head, and write amplifier with capacktive feed forward compensation |
| 12/31/1997 | CN1169061A Amplifier circuit for sound frequency signal |
| 12/30/1997 | US5703912 Clock-recovery device having cascaded resonance amplifiers |
| 12/30/1997 | US5703536 Liquid cooling system for high power solid state AM transmitter |
| 12/30/1997 | US5703534 Operational transconductance amplifier with good linearity |
| 12/30/1997 | US5703533 BiCMOS operational amplifier for switch/capacitor circuits |
| 12/30/1997 | US5703532 Fully differential self-biased signal receiver |
| 12/30/1997 | US5703530 Radio frequency amplifier having improved CTB and cross modulation characteristics |
| 12/30/1997 | US5703529 Amplifier circuit with reduced DC power related transients |
| 12/30/1997 | US5703516 Offset cancel circuit and offset cancel system using the same |
| 12/30/1997 | US5703504 Feedforward adaptive threshold processing method |
| 12/30/1997 | US5703477 Current driver circuit with transverse current regulation |
| 12/30/1997 | US5703353 Offset removal and spatial frequency band filtering circuitry for photoreceiver signals |
| 12/30/1997 | US5701908 System and method for monitoring and controlling the temperature of a catheter-mounted heater |
| 12/30/1997 | CA2109180C Electronic inductive switching power amplifier |
| 12/29/1997 | EP0814633A1 Digital loudspeaker with sound volume control |
| 12/24/1997 | WO1997049205A1 Optical receiver |
| 12/24/1997 | WO1997049177A1 Circuit arrangement for amplification of signal voltages and for rejection of superimposed common-mode voltages |
| 12/24/1997 | WO1997049176A1 Bridge amplifier with feedback over the load |
| 12/24/1997 | WO1997049175A1 Oversampled, noise-shaping, mixed-signal processor |
| 12/24/1997 | CN1168749A AM-FM transmitter power amplifier using class-BC |
| 12/24/1997 | CN1168599A Radio frequency device |
| 12/23/1997 | US5701213 Symmetrical resistive transducer biasing circuit and method |
| 12/23/1997 | US5701133 Cascaded multiplying current mirror driver for LED's |
| 12/23/1997 | US5701103 Amplifying circuit with DC voltage feedback to base terminal for magnetic record and playback apparatus |
| 12/23/1997 | US5701102 High-speed transmission line receiver with wide range of common mode compensation |
| 12/23/1997 | US5701101 For generating an output voltage |
| 12/18/1997 | WO1997048181A1 Power delivery system and method of controlling the power delivery system for use in a radio frequency system |
| 12/17/1997 | EP0813310A1 Method and arrangement relating to signal transmission |
| 12/17/1997 | EP0813297A1 Amplifier with digital gain control and camera using the same |
| 12/17/1997 | EP0813295A1 Amplifier with digital gain control and camera using such an amplifier |
| 12/17/1997 | EP0813163A1 Variable level shifter and multiplier suitable for low-voltage, differential operation |
| 12/17/1997 | EP0812488A2 Integrated driver for half-bridge circuit |
| 12/16/1997 | US5699018 Negative voltage generator |
| 12/16/1997 | US5699017 Automatic gain control circuit |
| 12/16/1997 | US5699015 Low voltage operational amplifier and method |
| 12/16/1997 | US5699013 Tri-state audio differential driver |
| 12/16/1997 | US5699012 High gain, low offset input amplifier |
| 12/16/1997 | US5699010 Differential amplifier circuit |
| 12/16/1997 | US5698469 Method of making a hybrid circuit with a chip having active devices with extra-chip interconnections |
| 12/16/1997 | CA2132611C High efficiency amplifier with reduced switching distortion |
| 12/11/1997 | WO1997047082A1 Method and apparatus for routing signals through a cable television signal distribution amplifier |
| 12/11/1997 | DE19639706C1 Controlled current source, especially for charge pump |
| 12/10/1997 | EP0812062A2 Gain-variable amplifier with wide control range |
| 12/10/1997 | EP0812061A2 Analog signal processing device and correlation computing device |
| 12/10/1997 | EP0811909A1 Arithmetic circuit for calculating a square-root of a sum of squares |
| 12/10/1997 | EP0811271A1 Audio amplifier |
| 12/09/1997 | US5696725 High-speed sense amplifier for semiconductor memory device |
| 12/09/1997 | US5696657 Temperature compensated APD detector bias and transimpedance amplifier circuitry for laser range finders |
| 12/09/1997 | US5696511 Voltage comparator and pipeline type A/D converter |
| 12/09/1997 | US5696460 Differential high speed inductive driver with a bidirectional current limiting output stage |
| 12/09/1997 | US5696459 For driving a liquid crystal display |
| 12/09/1997 | US5696457 Method for erasing a common mode current signal and transconductor assembly using such method |
| 12/09/1997 | US5696440 Constant current generating apparatus capable of stable operation |
| 12/09/1997 | CA2109410C High efficiency dual mode power amplifier apparatus |
| 12/09/1997 | CA2065635C Transistor direct-coupled amplifier |
| 12/04/1997 | WO1997045952A1 Channel coupled feedback circuits |