| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 12/22/1998 | CA2141614C Methods and apparatus for microphone preamplification |
| 12/17/1998 | WO1998057430A2 A gm-C CELL WITH TWO-STAGE COMMON MODE CONTROL AND CURRENT BOOST |
| 12/17/1998 | WO1998057422A1 High-order multipath operational amplifier with dynamic offset reduction, controlled saturation current limiting, and current feedback for enhanced conditional stability |
| 12/17/1998 | WO1998040967A3 Voltage-to-current converter with error correction |
| 12/17/1998 | DE19639031A1 voltage stabilisation circuit for integrated power driver |
| 12/16/1998 | EP0884837A2 Circuitry comprising a differential amplifying stage |
| 12/16/1998 | EP0883928A1 Improvements in or relating to amplifiers |
| 12/16/1998 | EP0783795B1 Low noise amplifier for microphone |
| 12/16/1998 | CN1202046A Mobile communication transmitter capable of selectively activating amplifiers |
| 12/16/1998 | CN1202039A Bandgap reference circuit and method |
| 12/15/1998 | US5850139 Load pole stabilized voltage regulator circuit |
| 12/15/1998 | US5850128 Power amplifier for an inductive load |
| 12/15/1998 | CA2160340C Four quadrant current mode switching amplifier |
| 12/10/1998 | WO1998056107A1 High efficiency power amplification method and apparatus |
| 12/10/1998 | DE19723774A1 Electromagnetically compatable clocked amplifier for dc/ac amplification |
| 12/09/1998 | EP0883250A2 Mobile communication transmitter capable of selectively activating amplifiers |
| 12/09/1998 | EP0883243A2 A matching circuit and a method for matching a transistor circuit |
| 12/09/1998 | EP0883241A1 Bias voltage controlled parallel active components |
| 12/09/1998 | EP0883240A1 Inverting amplifying circuit |
| 12/09/1998 | EP0883239A1 Preamplifier for amplifying signal voltages of a signal source with high source impedance |
| 12/09/1998 | EP0882325A1 Charge sensitive amplifier with high common mode signal rejection |
| 12/09/1998 | CN1201294A Reactive-current-trimmed power amplifier and trimming method thereof |
| 12/09/1998 | CN1201292A Back-amplifying circuit |
| 12/08/1998 | US5847694 Apparatus for generating a signal indicative of the position of a movable element in the apparatus |
| 12/08/1998 | US5847670 Analog to digital converter |
| 12/08/1998 | US5847610 Protection circuit for an audio amplifier |
| 12/08/1998 | US5847608 Amplifier circuit operating with single bias supply and less sensitive to fluctuation of threshold |
| 12/08/1998 | US5847607 High speed fully differential operational amplifier with fast settling time for switched capacitor applications |
| 12/08/1998 | US5847606 Low voltage CMOS amplifier output stage |
| 12/08/1998 | US5847604 Linearizer for linearizing a non-linear component controlled by control voltage |
| 12/08/1998 | US5847602 Method and apparatus for linearizing an efficient class D/E power amplifier using delta modulation |
| 12/08/1998 | US5847601 Switched capacitor common mode feedback circuit for differential operational amplifier and method |
| 12/08/1998 | US5847600 Switched capacitor circuit |
| 12/08/1998 | US5847598 Differential amplifier |
| 12/08/1998 | US5847556 Precision current source |
| 12/03/1998 | WO1998054833A1 Improved transimpedance amplifier |
| 12/02/1998 | EP0880822A1 Method and apparatus providing limiting transimpedance amplification |
| 12/01/1998 | US5844445 Feedback type pre-amplifier |
| 12/01/1998 | US5844443 Linear high-frequency amplifier with high input impedance and high power efficiency |
| 12/01/1998 | US5844442 Low voltage fully differential operational amplifier with improved common mode circuitry |
| 11/28/1998 | CA2215448A1 Amplifier, signal source circuit and power supply |
| 11/26/1998 | WO1998053553A1 Active phase splitter |
| 11/26/1998 | WO1998035437A3 An amplifier circuit, a transmitter and a wireless telephone |
| 11/26/1998 | DE19754114A1 Mixer circuit for two signals with oppositely different frequencies |
| 11/26/1998 | DE19730333C1 Light signal amplification and processing circuit |
| 11/25/1998 | EP0880225A2 Amplifier with reduced input capacitance |
| 11/25/1998 | EP0879501A1 Power combiner |
| 11/25/1998 | EP0879500A1 Low-voltage differential amplifier |
| 11/25/1998 | CN1199986A Frequency compensated pin diode attenuator |
| 11/25/1998 | CN1199956A High frequency amplifier with guard circuit and radio wave transmission apparatus including the same |
| 11/24/1998 | US5842140 Waste energy control and management in power amplifiers |
| 11/24/1998 | US5841821 Bi-directional low pass filtering method and apparatus |
| 11/24/1998 | US5841603 Arrangement comprising a magnetic write head, and write amplifier with capacitive feed-forward compensation |
| 11/24/1998 | US5841571 Optical receiver having a function for suppressing useless intensity modulation components |
| 11/24/1998 | US5841321 Amplifying circuit using offset value variable circuit |
| 11/24/1998 | US5841319 Method and apparatus for controlling gain of an amplifier by comparing a detected output envelope and a reference signal |
| 11/24/1998 | US5841317 Differential amplifier circuit with a high through put rate and reduced power consumption |
| 11/24/1998 | US5841308 Amplifier for cancelling noise between circuit systems |
| 11/24/1998 | US5841271 Test mode power circuit for integrated-circuit chip |
| 11/24/1998 | CA2139717C Multi-stage solid state amplifier that emulates tube distortion |
| 11/19/1998 | WO1998052278A2 An amplified mos biasing circuit for avoiding latch-up |
| 11/18/1998 | EP0878904A2 A power amplifier with an idle current trimmed and a method of trimming the power amplifier |
| 11/18/1998 | EP0700597A4 Differential audio line receiver |
| 11/18/1998 | CN1199280A Radio frequency amplifier having improved CTB and cross modulation characteristics |
| 11/17/1998 | US5838803 Muting circuit |
| 11/17/1998 | US5838722 Monolithic transceiver including feedback control |
| 11/17/1998 | US5838515 PWM/linear driver for disk drive voice coil actuator |
| 11/17/1998 | US5838210 Method and apparatus for generating a modulated signal |
| 11/17/1998 | US5838201 Solid state power amplifier with planar structure |
| 11/17/1998 | US5838200 Differential amplifier with switched capacitor common mode feedback |
| 11/17/1998 | US5838199 Multi-stage high-performance amplifier |
| 11/17/1998 | US5838198 Gain control for parallel-arranged differential pairs |
| 11/17/1998 | US5838197 High-gain amplifier circuit having voltage/current converter |
| 11/17/1998 | US5838196 Transformer-coupled amplifier |
| 11/17/1998 | US5838195 Reduction of second order harmonic distortion in high power TWT amplifiers |
| 11/17/1998 | US5838193 For amplifying an input signal |
| 11/17/1998 | US5838184 Equivalent variable resistor circuits |
| 11/17/1998 | US5838149 Voltage control means having a reduced sensitivity to temperature variations |
| 11/17/1998 | US5838031 Low noise-high linearity HEMT-HBT composite |
| 11/12/1998 | WO1998051007A1 Method and apparatus for efficient signal power amplification |
| 11/12/1998 | WO1998051006A1 Driver circuit with pull down npn transistor |
| 11/11/1998 | EP0877515A2 Circuit for converting unipolar input to bipolar output |
| 11/11/1998 | EP0877479A1 Low-voltage radio frequency amplifier |
| 11/11/1998 | EP0877478A1 Apparatus with a wide band amplifier circuit |
| 11/11/1998 | EP0877467A1 Device for reducing the ripple component of the signal fed to a load by a switch mode power amplifier |
| 11/11/1998 | EP0746903A4 Distortion compensation for a pulsewidth-modulated circuit |
| 11/11/1998 | CN1198856A Bypass device in an amplifier unit |
| 11/11/1998 | CN1198855A Amplifier circuit |
| 11/10/1998 | US5835049 Amplifier for use in time-sharing applications |
| 11/10/1998 | US5835047 Folding A/D converter |
| 11/10/1998 | US5834988 Frequency compensated PIN diode attenuator |
| 11/10/1998 | US5834974 Differential amplifier with reduced current consumption |
| 11/10/1998 | US5834973 Voltage isolation circuit for a measurement channel |
| 11/10/1998 | US5834972 Method and system in a hybrid matrix amplifier for configuring a digital transformer |
| 11/10/1998 | US5834971 RF amplifier including traveling wave tube with sequential stages |
| 11/10/1998 | US5834951 Current amplifier having a fully differential output without a d. c. bias and applications thereof |
| 11/10/1998 | US5834814 Semiconductor integrated circuit |
| 11/10/1998 | US5834763 Low noise photon coupled circuit |
| 11/05/1998 | WO1998049771A1 Battery life extending technique for mobile wireless applications |
| 11/05/1998 | CA2285236A1 Battery life extending technique for mobile wireless applications |