| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/02/2000 | US6057738 High dynamic range optical receiver preamplifier |
| 05/02/2000 | US6057737 Non-linear asymmetrical audio amplifiers |
| 05/02/2000 | US6057734 Symmetrical analog power amplifier |
| 05/02/2000 | US6057733 Feedforward multicarrier linear RF power amplifier |
| 05/02/2000 | US6057731 Low-distortion high-frequency amplifier |
| 05/02/2000 | US6057726 Output circuit for power IC with high breakdown voltage |
| 05/02/2000 | CA2211276C Circuit arrangement with an operational amplifier |
| 05/02/2000 | CA2174930C Power supply modulator circuit for transmitter |
| 04/27/2000 | WO2000024124A1 Dual-band, dual-mode power amplifier with reduced power loss |
| 04/27/2000 | DE19947816A1 Low voltage cascode current source with 5 transistors has bias stage connected to fourth, fifth transistors so voltages on first, second connections of fourth, second transistors coincide |
| 04/27/2000 | DE19938907A1 Output buffer has MOS transistor with low potential node connected to control node of pull-up transistor and high potential nodes connected to low potential node of another transistor and high potential supply line |
| 04/26/2000 | EP0995281A1 Data reception circuit for infrared signals |
| 04/26/2000 | EP0995280A1 Wake-up circuit for an electronic apparatus |
| 04/26/2000 | EP0720729B1 Ultra low noise optical receiver |
| 04/26/2000 | CN1251697A Pulse referenced control method for enhance power amplification of pulse modulated signal |
| 04/25/2000 | US6055418 Computer program product configured to control modular transmission system components |
| 04/25/2000 | US6054902 High-frequency amplifier |
| 04/25/2000 | US6054900 Power amplifier MMIC and mobile communication terminal |
| 04/25/2000 | US6054898 Semiconductor device having SEPP connected NPN and PNP transistors |
| 04/25/2000 | US6054897 Differential amplifier constituted of bipolar transistors |
| 04/25/2000 | US6054887 Offset voltage correction circuit |
| 04/25/2000 | US6054886 Reference buffer technique for high speed switched capacitor circuits |
| 04/25/2000 | US6054880 Circuit with high-voltage output stage |
| 04/25/2000 | US6054876 Buffer circuit |
| 04/25/2000 | US6054796 Positive feedback resonant transducer circuit |
| 04/20/2000 | WO2000022836A1 Dual forward and reverse test points for amplifiers |
| 04/20/2000 | WO2000022727A1 Variable frequency class d modulator with built in soft clipping and frequency limiting |
| 04/20/2000 | WO2000022726A1 Non-linear asymmetrical audio amplifiers |
| 04/20/2000 | DE19847828A1 Cascade amplifier for cable television signals, has two spaced active regions for providing transistor cells, respectively, having transistors in common emitter and common base configuration |
| 04/20/2000 | DE19843957C1 Push-pull circuit with output stage |
| 04/20/2000 | DE19843784A1 Power amplification circuit for communications signals, has parallel signal paths containing saturation amplifiers with different power output values operated selectively dependent on required power output |
| 04/20/2000 | DE19842305A1 Linear operational transconductance amplifier, has input element and load element acting as controlled current source and end stage transistor controlled by output signal from difference voltage amplifier |
| 04/20/2000 | DE19834209C1 Verstärkerausgangsstufe Amplifier output stage |
| 04/19/2000 | EP0994335A2 Comparing and amplifying detector circuit |
| 04/19/2000 | CN2375043Y TV sound signal radio transmitter |
| 04/19/2000 | CN1250977A Stably current-biased efficient class-A open-loop constant-current transistor amplifier |
| 04/19/2000 | CN1250976A Power amplifier having monitoring and circuit protection |
| 04/18/2000 | US6052221 Optical receiver having a function for suppressing useless intensity modulation components |
| 04/18/2000 | US6052033 Radio frequency amplifier system and method |
| 04/18/2000 | US6052032 Radio frequency amplifiers |
| 04/18/2000 | US6052029 Stabilizing circuit and amplifier |
| 04/18/2000 | US6052028 Low power, bipolar, wide bandwidth unity gain buffer |
| 04/18/2000 | US6052027 Wideband operational amplifier having a plurality of feedback loops |
| 04/18/2000 | US6052025 CMOS operational amplifiers having reduced power consumption requirements and improved phase margin characteristics |
| 04/18/2000 | US6052024 Monolithic, low-noise, synchronous direct detection receiver for passive microwave/millimeter-wave radiometric imaging systems |
| 04/18/2000 | US6051993 Level shift circuit compensating for circuit element characteristic variations |
| 04/18/2000 | US6051960 Switching regulator with reduced power consumption |
| 04/18/2000 | CA2182943C Signal-receiving and signal-processing unit |
| 04/13/2000 | WO2000021202A1 Transmission power amplifier for a mobile telephone |
| 04/13/2000 | WO2000021193A1 If amplifier |
| 04/13/2000 | WO2000003474A3 Converter circuit and variable gain amplifier with temperature compensation |
| 04/13/2000 | DE19846069A1 Sendeendstufe für ein Mobiltelefon Transmitter output stage for a mobile phone |
| 04/12/2000 | EP0992094A1 A light emitting device and transistor |
| 04/12/2000 | CN1250252A Transmitting installation and its method |
| 04/12/2000 | CN1250251A Double-side band pilot technology using for distorted control system generated from reducing circuit |
| 04/11/2000 | US6049253 Operational amplifier |
| 04/11/2000 | US6049252 Programmable-gain amplifier |
| 04/11/2000 | US6049251 Wide-dynamic-range variable-gain amplifier |
| 04/11/2000 | US6049250 Dittributed feed back distributed amplifier |
| 04/11/2000 | US6049249 TWT with mismatched section for controlled gain variation with frequency |
| 04/11/2000 | US6049248 Method and apparatus for generating a driver signal for use by a non-linear class S amplifier for producing linear amplification |
| 04/11/2000 | US6049247 Low-voltage common source switched-capacitor amplifier |
| 04/11/2000 | US6049246 Amplifier offset cancellation using current copier |
| 04/11/2000 | US6049237 Voltage/current converting circuit and PLL circuit including this circuit |
| 04/06/2000 | WO2000019717A1 Apparatus for providing television receiver alignment functions |
| 04/06/2000 | WO2000019709A1 Video amplifier with integrated dc level shifting |
| 04/06/2000 | WO2000019604A1 Linear transconductance circuits having class ab amplifiers parallel coupled with concave compensation circuits |
| 04/06/2000 | WO2000019601A1 Circuit arrangement for stabilizing the operating point of a transistor |
| 04/06/2000 | DE19946750A1 Fully differential interpolating comparator bank in analog to digital converter |
| 04/05/2000 | EP0991297A2 3D woofer drive circuit |
| 04/05/2000 | EP0991295A2 Speaker and speaker device |
| 04/05/2000 | EP0991210A2 Double side band pilot technique for a control system that reduces distortion produced by electrical circuits |
| 04/04/2000 | US6046876 Head signal device with noise immunity function, for use in a disk storage apparatus |
| 04/04/2000 | US6046875 Linear transconductance circuit having a large linear range |
| 04/04/2000 | US6046642 Amplifier with active bias compensation and method for adjusting quiescent current |
| 04/04/2000 | US6046641 Parallel HV MOSFET high power stable amplifier |
| 04/04/2000 | US6046639 Amplifier/oscillator circuit with common-emitter amplifier and differential amplifier |
| 04/04/2000 | US6046636 Device for amplifying signals |
| 04/04/2000 | US6046634 Amplifier circuit employing floating error cancellation |
| 04/04/2000 | US6046481 Transistor for preventing a thermal runaway caused by temperature rise in a bias circuit of the transistor |
| 04/04/2000 | US6046461 Semiconductor integrated circuit device |
| 03/30/2000 | WO2000018006A1 Amplifier |
| 03/30/2000 | WO2000018005A1 High efficiency switched gain power amplifier |
| 03/30/2000 | WO2000018004A1 High efficiency switched gain power amplifier |
| 03/30/2000 | WO2000018003A1 A method and arrangement for measuring temperature in an intermittently operating semiconductor |
| 03/30/2000 | DE19839156C1 Multi-channel power amplifier for audio frequency signals, has switch for connecting gains stages in parallel or series with supply voltage |
| 03/30/2000 | CA2345089A1 High efficiency switched gain power amplifier |
| 03/29/2000 | EP0989579A2 Device comprising a carbon nanotube field emitter structure and process for forming device |
| 03/29/2000 | CN1249080A Combined linear power amplifying device and method |
| 03/29/2000 | CN1249079A Device and process for telecommunication |
| 03/29/2000 | CN1248819A 数字功率放大器 Digital Power Amplifier |
| 03/28/2000 | US6044255 Radio frequency circuit with integrated elements and method of manufacture |
| 03/28/2000 | US6043721 Dual band amplifier |
| 03/28/2000 | US6043714 Power amplifier incorporating heterojunction and silicon bipolar transistors |
| 03/28/2000 | US6043713 Amplifier with temperature compensation function |
| 03/28/2000 | US6043712 Linear power amplifier |
| 03/28/2000 | US6043710 Low-voltage amplifiers |
| 03/28/2000 | US6043709 Transconductor for processing a very high frequency signal |
| 03/28/2000 | US6043708 Fully complementary folded cascode amplifier |
| 03/23/2000 | WO2000016475A1 In-line, unbalanced amplifier, pre-distortion circuit |