| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 09/21/1999 | US5955918 Burst mode digital data amplifier circuit unit and amplifier circuit |
| 09/21/1999 | US5955849 Cold field emitters with thick focusing grids |
| 09/19/1999 | CA2259547A1 High-gain amplifier |
| 09/18/1999 | CA2263053A1 Differential optical signal receiver |
| 09/16/1999 | WO1999046854A1 A comb linear amplifier combiner (clac) |
| 09/16/1999 | WO1999046853A1 Amplifying circuit and optical receiver comprising the same |
| 09/16/1999 | WO1999046766A2 Optical read/write apparatus |
| 09/16/1999 | WO1999046611A2 Power supply circuit |
| 09/16/1999 | CA2322588A1 A comb linear amplifier combiner (clac) |
| 09/15/1999 | EP0942528A2 Harmonic suppression circuit |
| 09/15/1999 | EP0942526A1 Circuit arrangement for adjusting the impedance of a differential active component |
| 09/15/1999 | EP0942524A2 Radio frequency amplifiers |
| 09/15/1999 | EP0941575A1 Efficient parallel-stage power amplifier |
| 09/15/1999 | CN2338914Y Dynamic class A power amplifier |
| 09/14/1999 | US5952887 Feedback amplifier and optical receiver using the same |
| 09/14/1999 | US5952886 MMIC power amplifier with diagonal circuitry |
| 09/14/1999 | US5952885 Current-to-voltage converter with highpass filter function |
| 09/14/1999 | US5952884 Current mirror circuit and semiconductor integrated circuit having the current mirror circuit |
| 09/14/1999 | US5952882 Gain enhancement for operational amplifiers |
| 09/14/1999 | US5952881 Power stage, particularly for an operational amplifier |
| 09/14/1999 | US5952869 High power MOS transistor |
| 09/14/1999 | US5952860 Amplifier using a single polarity power supply |
| 09/14/1999 | CA2188962C High-frequency amplifier integrated circuit device |
| 09/10/1999 | WO1999045656A2 A differential line driver |
| 09/10/1999 | WO1999045642A1 Amplification using amplitude reconstruction of amplitude and/or angle modulated carrier |
| 09/10/1999 | WO1999045641A1 A method in the compensation of unlinearities in an amplifier, an amplifier, and uses of the method and the amplifier |
| 09/09/1999 | DE3348377C2 Schaltung zum Umwandeln von Gleichsignalen A circuit for converting DC signals |
| 09/08/1999 | EP0940912A1 High frequency power amplifier |
| 09/08/1999 | EP0940878A1 Short-stub matching circuit |
| 09/08/1999 | EP0940008A1 Amplifier with controllable output current |
| 09/08/1999 | EP0940006A1 Method and apparatus for routing signals through a cable television signal distribution amplifier |
| 09/08/1999 | EP0940002A1 Device for changing level of analog signal |
| 09/08/1999 | EP0729669A4 Dual-sided push-pull amplifier |
| 09/08/1999 | CN1228204A Bridged driving amplifier and telecommunication device |
| 09/07/1999 | US5949296 Power supply modulator circuit for transmitter |
| 09/07/1999 | US5949287 Power amplifier |
| 09/07/1999 | US5949284 CMOS buffer amplifier |
| 09/07/1999 | US5949282 Class D amplifier no low pass filter feedback with zero phase delay |
| 09/07/1999 | US5949259 Zero-delay slew-rate controlled output buffer |
| 09/07/1999 | US5949085 Ratiometric compensated optical isolation coupler |
| 09/07/1999 | CA2108461C Power amplifier combining network |
| 09/02/1999 | DE19905826A1 Integrated stereophonic sound amplifier circuit |
| 09/01/1999 | EP0938777A2 A high frequency amplifier, and a communication receiver or transceiver |
| 09/01/1999 | EP0938776A1 Folded-cascode amplifier stage |
| 08/31/1999 | US5946034 Charge/voltage conversion device |
| 08/31/1999 | US5945880 Low noise amplifier |
| 08/31/1999 | US5945879 Series-connected microwave power amplifiers with voltage feedback and method of operation for the same |
| 08/31/1999 | US5945878 Single-ended to differential converter |
| 08/31/1999 | US5945877 Power amplifier with bootstrap voltage clamp |
| 08/31/1999 | US5945876 Soft switching for Cartesian feedback loop control with a transmission system |
| 08/31/1999 | US5945864 Circuit configuration for offset compensation |
| 08/31/1999 | US5945818 Load pole stabilized voltage regulator circuit |
| 08/31/1999 | US5945785 Power source device with minimized variation in circuit efficiency due to variation in applied voltage to driving transformer |
| 08/26/1999 | WO1999043083A1 Amplifier for radio transmission |
| 08/26/1999 | DE19907530A1 D-amplifier, esp. for use in an output signal reproduction circuit with no phase delay |
| 08/26/1999 | DE19806394C1 Circuit for amplifying a difference voltage signal |
| 08/25/1999 | EP0938191A2 Hybrid amplifier |
| 08/25/1999 | EP0938188A2 Variable gain amplifier circuit |
| 08/25/1999 | EP0938187A1 Method and apparatus for controlling the common-mode output voltage of a differential buffer |
| 08/25/1999 | EP0938186A1 Switching of a capacitor on a mutually exclusive selected one of a plurality of integrated amplifiers |
| 08/25/1999 | EP0937335A1 An arrangement for reducing and stabilizing the amplification of a darlington-coupled output stage |
| 08/25/1999 | CN1227013A Voltage to current converter for high frequency applications |
| 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 | US5942943 Electrical power amplifier device |
| 08/24/1999 | US5942942 Differential amplifier with double output stages |
| 08/24/1999 | US5942941 Base-current compensation circuit to reduce input offset voltage in a bipolar operational amplifier |
| 08/24/1999 | US5942940 Low voltage CMOS differential amplifier |
| 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 | US5942929 Active phase splitter |
| 08/24/1999 | US5942912 Devices for the self-adjusting setting of the operating point in amplifier circuits with neuron MOS transistors |
| 08/24/1999 | US5942856 Thin film transistor circuit and display utilizing the same |
| 08/24/1999 | US5942804 Circuit structure having a matrix of active devices |
| 08/24/1999 | CA2118020C Dc feedback circuit using sample and hold circuits |
| 08/19/1999 | WO1999041831A1 Apparatus for improved amplification of audio signals |
| 08/18/1999 | EP0936732A1 Improved pulse step modulator |
| 08/18/1999 | EP0935849A1 Low-impedance cmos output stage and method |
| 08/18/1999 | EP0935846A2 Pulse modulation power amplifier with enhanced cascade control method |
| 08/18/1999 | EP0935845A1 Linearized alternating voltage amplifier |
| 08/18/1999 | CN2334121Y High-voltage audio power amplifier without transformer |
| 08/18/1999 | CN1226107A Off-channel leakage power monitoring apparatus and method |
| 08/17/1999 | US5940235 Reproducing circuit for a magnetic head incorporating the voltage-to-current and an exponent current amplifier |
| 08/17/1999 | US5940025 Noise cancellation method and apparatus |
| 08/17/1999 | US5939945 Amplifier with neuron MOS transistors |
| 08/17/1999 | US5939944 NPN push-pull output stage with folded cascode JFETs |
| 08/17/1999 | US5939943 Amplifier with improved output voltage swing |
| 08/17/1999 | US5939941 High efficiency power amplifier using HITFET driver circuit |
| 08/17/1999 | US5939939 Power combiner with harmonic selectivity |
| 08/17/1999 | US5939938 Amplifier circuit with reduced DC power related turn-on and turn-off transients |
| 08/17/1999 | US5939904 Method and apparatus for controlling the common-mode output voltage of a differential buffer |
| 08/17/1999 | US5939863 Power circuit providing reverse battery protection and current and temperature sensing |
| 08/17/1999 | CA2261427A1 Improved pulse step modulator |
| 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 |
| 08/12/1999 | WO1999040684A1 Class d amplifier with reduced clock requirement and related methods |
| 08/12/1999 | WO1999040680A1 Method and apparatus for compensating for delays in modulator loops |
| 08/12/1999 | CA2320215A1 Method and apparatus for compensating for delays in modulator loops |
| 08/11/1999 | EP0934632A2 A method and an arrangement for adapting, from a dc point of view, a first circuit to at least one second circuit |