| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 08/25/1999 | CN1226763A Device load variation protection circuit |
| 08/24/1999 | US5942957 Flip-mounted impedance |
| 08/24/1999 | US5942946 RF power amplifier with high efficiency and a wide range of gain control |
| 08/24/1999 | US5942945 Arrangement for protecting the output transistors in a power amplifier |
| 08/24/1999 | US5942943 Electrical power amplifier device |
| 08/24/1999 | US5942939 Amplifier and method of canceling distortion by combining hyperbolic tangent and hyperbolic sine transfer functions |
| 08/24/1999 | US5942938 Communications device |
| 08/24/1999 | US5942936 Offset compensating method and circuit for MOS differential stages |
| 08/24/1999 | US5942912 Devices for the self-adjusting setting of the operating point in amplifier circuits with neuron MOS transistors |
| 08/24/1999 | CA2118020C Dc feedback circuit using sample and hold circuits |
| 08/18/1999 | EP0936745A2 Device load variation protection circuit |
| 08/18/1999 | EP0936731A1 Feed forward amplifier |
| 08/18/1999 | EP0936595A1 Driving circuit for capacitive load and driving circuit for display |
| 08/18/1999 | EP0935846A2 Pulse modulation power amplifier with enhanced cascade control method |
| 08/18/1999 | EP0935845A1 Linearized alternating voltage amplifier |
| 08/17/1999 | US5939951 For processing an input signal to generate a combined signal |
| 08/17/1999 | US5939945 Amplifier with neuron MOS transistors |
| 08/17/1999 | US5939943 Amplifier with improved output voltage swing |
| 08/17/1999 | US5939940 Low noise preamplifier for a magnetoresistive data transducer |
| 08/17/1999 | US5939938 Amplifier circuit with reduced DC power related turn-on and turn-off transients |
| 08/17/1999 | US5939920 Method and apparatus which adds distortion to a signal to compensate for distortion added at a later stage by a nonlinear element |
| 08/17/1999 | US5939906 Circuit compensating nonlinearities |
| 08/17/1999 | US5939863 Power circuit providing reverse battery protection and current and temperature sensing |
| 08/17/1999 | CA2196008C Quiescent current control for the output stage of an amplifier |
| 08/17/1999 | CA2184225C Wide range variable output amplifier apparatus with high efficiency |
| 08/11/1999 | EP0878053A4 Linearity enhancing circuit for power amplifier |
| 08/11/1999 | EP0797869A4 Apparatus and method for performing error corrected amplification in a radio frequency system |
| 08/10/1999 | US5937074 High back emf, high pressure subwoofer having small volume cabinet, low frequency cutoff and pressure resistant surround |
| 08/10/1999 | US5937011 Multi-carrier high power amplifier using digital pre-distortion |
| 08/10/1999 | US5936467 Dynamically invariant AB linear operation amplifier |
| 08/10/1999 | US5936465 Bipolar OTA using multitail cell |
| 08/10/1999 | US5936464 Method and apparatus for reducing distortion in a high efficiency power amplifier |
| 08/10/1999 | US5936463 Inverted amplifying circuit |
| 08/10/1999 | CA2193153C An efficient rf cmos amplifier with increased transconductance |
| 08/05/1999 | WO1999039449A1 Amplifier module with two power amplifiers for dual band cellular phones |
| 08/05/1999 | DE19832565A1 Transmitter-receiver selection switching module used in portable telephone |
| 08/04/1999 | EP0932933A1 Multi-stage high efficiency linear power amplifier |
| 08/04/1999 | EP0898809A4 Pre-post distortion amplifier |
| 08/04/1999 | EP0885482B1 Pre-distortion for a non-linear transmission path in the high frequency range |
| 08/04/1999 | EP0797868A4 Amplifier circuit for rf system |
| 08/04/1999 | EP0788679A4 Power amplifier with switching power supply |
| 08/04/1999 | CN1225204A Oscillator voltage regulator |
| 08/04/1999 | CN1224950A High input impedance single ended, low supply voltage magnetoresistive preamplifier circuits |
| 08/03/1999 | US5933767 Apparatus and method for tuning the gain of a transmitter utilizing cartesian feedback |
| 08/03/1999 | US5933766 Intermodulation compensation in multi-channel amplifiers |
| 08/03/1999 | US5933057 Low noise amplifier |
| 08/03/1999 | US5933054 Bipolar operational transconductance amplifier |
| 08/03/1999 | CA2151003C Power amplifier with clipping level control |
| 07/29/1999 | WO1999038297A1 Pulse shaping which compensates for component distortion |
| 07/29/1999 | WO1999038255A2 Pwm amplifier |
| 07/29/1999 | WO1999037207A1 Digital sliding pole fast-restore for an electrocardiograph display |
| 07/27/1999 | US5930128 Power waveform synthesis using bilateral devices |
| 07/27/1999 | US5929776 Low voltage transceiver |
| 07/27/1999 | US5929710 Cascode single-ended to differential converter |
| 07/27/1999 | US5929709 In an amplifier |
| 07/27/1999 | US5929707 Amplifier system with controlled reactance |
| 07/27/1999 | US5929704 Control of RF error extraction using auto-calibrating RF correlator |
| 07/27/1999 | US5929703 Method and device for modeling AM-AM and AM-PM characteristics of an amplifier, and corresponding predistortion method |
| 07/27/1999 | US5929702 Method and apparatus for high efficiency high dynamic range power amplification |
| 07/27/1999 | US5929701 Feed forward amplifier system and method |
| 07/27/1999 | US5929695 Integrated circuit having selective bias of transistors for low voltage and low standby current and related methods |
| 07/22/1999 | WO1999037020A1 Method and apparatus for spread spectrum pilot extraction for rf amplifiers |
| 07/22/1999 | WO1999028768A3 Optical receiver |
| 07/21/1999 | EP0930699A1 Feed forward amplifier improvement |
| 07/21/1999 | EP0929935A1 Coplanar waveguide amplifier |
| 07/21/1999 | CN1223753A Device and method for compensating phase distortion |
| 07/21/1999 | CN1223506A Nonlinearity-caused distortion compensating system |
| 07/21/1999 | CN1223500A Differential amplifier and method of compensation |
| 07/20/1999 | US5926749 Amplifier circuit having common AGC to IF and RF amplifiers for use in a transmitter |
| 07/20/1999 | US5926509 Twisted pair communicatons line system |
| 07/20/1999 | US5926069 Low noise amplifier |
| 07/20/1999 | US5926067 Sweep pilot technique for a control system that reduces distortion produced by electrical circuits |
| 07/20/1999 | US5926066 Chopper-stabilized operational amplifier including integrated circuit with true random voltage output |
| 07/20/1999 | US5926062 Reference voltage generating circuit |
| 07/15/1999 | WO1999035545A1 Output buffer having a predriver for compensating slew rate against process variations |
| 07/15/1999 | WO1999025073A3 Adaptation method and amplifier arrangement |
| 07/15/1999 | WO1999025072A3 Control method and control arrangement |
| 07/15/1999 | DE19860097A1 System with telephone and base station |
| 07/15/1999 | DE19831596A1 HF signal amplifier circuit with temperature compensation |
| 07/15/1999 | CA2283584A1 Output buffer having a predriver for compensating slew rate against process variations |
| 07/14/1999 | EP0929193A2 A complementary push-pull cmos source follower analog video buffer |
| 07/14/1999 | EP0929148A1 Method and apparatus for digitally linearising an amplifier |
| 07/14/1999 | EP0929147A1 Amplitude and phase control device of a radio frequency signal |
| 07/14/1999 | EP0929021A1 Current supply circuit and bias voltage circuit |
| 07/14/1999 | EP0928515A1 Adaptive digital predistortion linearization and feed-forward correction of rf power amplifier |
| 07/14/1999 | CN1223031A Oversampled, noise-shaping, mixed-signal processor |
| 07/14/1999 | CN1222787A High efficiency power amplifier |
| 07/13/1999 | US5923712 Method and apparatus for linear transmission by direct inverse modeling |
| 07/13/1999 | US5923218 Device with amplifier means including safety means, and with filter means connected to the amplifier means |
| 07/13/1999 | US5923215 Linearized amplifier |
| 07/13/1999 | US5923214 Feedforward amplifier network with swept pilot tone for reducing distortion generated by a power amplifier |
| 07/13/1999 | US5923203 CMOS soft clipper |
| 07/07/1999 | EP0928072A2 Transmitter linearization feedback |
| 07/07/1999 | EP0928063A2 Wideband CATV amplifier with microprocessor-based slope and gain control |
| 07/07/1999 | EP0928062A1 Linearity correction method and circuit for power amplifier and amplifier with such a circuit |
| 07/07/1999 | EP0927453A1 Three state output method and apparatus for high speed amplifiers |
| 07/06/1999 | US5920808 Power amplifier for use in a transmitter |
| 07/06/1999 | US5920232 Compensated, bias-dependent signal filter and amplifier circuit |
| 07/06/1999 | US5920230 HEMT-HBT cascode distributed amplifier |
| 07/06/1999 | US5920229 Power amplifier apparatus |