| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 02/04/1999 | WO1999005785A1 Multiple channel class d audio amplifier |
| 02/04/1999 | WO1998052278A3 An amplified mos biasing circuit for avoiding latch-up |
| 02/03/1999 | EP0895348A1 Transistor amplifier stage |
| 02/03/1999 | CN1206957A Power-like amplifier output stage by adopting parallel voltage-stabilizing, quick thermal tracking biased compensation circuit |
| 02/03/1999 | CN1206956A Amplifier whose final biased current being synchronously controlled by singal change rate |
| 02/03/1999 | CN1206955A Power source central-point floating type power amplifier |
| 02/02/1999 | US5867777 Variable-gain amplifier circuit, offset control method in variable-gain amplifier circuit, radio receiver with variable-gain amplifier circuit, and radio receiving method in radio receiver with variable-gain amplifier |
| 02/02/1999 | US5867067 Critically-biased MOS current mirror |
| 02/02/1999 | US5867066 Current amplifier |
| 02/02/1999 | US5867062 DC-offset canceler circuit and differential amplifier circuit equipped therewith |
| 02/02/1999 | US5867061 Transformer coupled stacked power amplifier |
| 02/02/1999 | US5867060 Power delivery system and method of controlling the power delivery system for use in a radio frequency system |
| 02/02/1999 | US5867035 Voltage to current conversion circuit for converting voltage to multiple current outputs |
| 02/02/1999 | CA2161117C Differential audio line receiver |
| 01/28/1999 | WO1999004529A2 Voltage controlled oscillator |
| 01/28/1999 | WO1998044626A3 Pulse referenced control method for enhanced power amplification of a pulse modulated signal |
| 01/28/1999 | DE19731427A1 Power amplifier circuit, e.g. for car radio |
| 01/28/1999 | CA2296420A1 Voltage controlled oscillator |
| 01/27/1999 | EP0893880A1 Amplifier stage with constant input impedance |
| 01/27/1999 | CN1206515A Efficient parallel-stage power amplifier |
| 01/27/1999 | CN1206245A Reference voltage generating circuit |
| 01/26/1999 | US5864561 Circuit arrangement with a multiplexer |
| 01/26/1999 | US5864416 Tuning optical communications receiver by controlling drain current input to variable transconductance fet stage of variable bandwidth transimpedance amplifier |
| 01/26/1999 | US5864257 For a telescopic cascode amplifier |
| 01/26/1999 | US5864254 Differential amplifier circuit with enlarged range for source voltage and semiconductor device using same |
| 01/21/1999 | WO1999003219A1 Wake-up circuit for an electronic apparatus |
| 01/21/1999 | WO1999003218A1 Data reception circuit for infrared signals |
| 01/21/1999 | WO1999003197A2 A high speed and high gain operational amplifier |
| 01/21/1999 | WO1999003196A1 Device for amplifying signals |
| 01/21/1999 | CA2295854A1 Data reception circuit for infrared signals |
| 01/21/1999 | CA2295840A1 A high speed and high gain operational amplifier |
| 01/21/1999 | CA2295564A1 Wake-up circuit for an electronic apparatus |
| 01/20/1999 | EP0892511A2 Optical module for receiving optical signal from optical fiber |
| 01/20/1999 | EP0892495A2 Balance-to-single signal converting circuit |
| 01/20/1999 | EP0892333A2 Current source circuit |
| 01/20/1999 | EP0891651A2 Amplifier with improved output voltage swing |
| 01/20/1999 | EP0891650A2 An amplifier circuit, a transmitter and a wireless telephone |
| 01/20/1999 | CN1205576A Differential amplifying device |
| 01/19/1999 | US5862237 Speaker apparatus |
| 01/19/1999 | US5862068 Arithmetic circuit for calculating a square-root of a sum of squares |
| 01/19/1999 | US5861853 Current balanced balun network with selectable port impedances |
| 01/19/1999 | US5861779 Impedance circuit for a miniature hearing aid |
| 01/19/1999 | US5861778 Low noise amplifier structure |
| 01/19/1999 | US5861776 High efficiency RF amplifier |
| 01/19/1999 | US5861775 Signal conditioning circuit for low amplitude, high common mode voltage input signals |
| 01/19/1999 | US5861621 Photosensor circuit having an initial setting unit |
| 01/14/1999 | WO1998043348A3 Radio receiver and controllable amplifier circuit |
| 01/13/1999 | EP0890221A1 Conversion of a pcm signal into a upwm signal |
| 01/13/1999 | CN2304212Y High-speed current sensitive prime amplifier |
| 01/13/1999 | CN1204890A Matching circuit and method for matching transistor circuit |
| 01/13/1999 | CN1204889A Programmable-gain amplifier |
| 01/13/1999 | CN1204888A Imbalance/balance transformation super fidelity open-loop transistor constant-current amplifier |
| 01/13/1999 | CN1204887A Predistortion circuit for RF amplifier |
| 01/12/1999 | US5859798 Read circuit for non-volatile memory working with a low supply voltage |
| 01/12/1999 | US5859674 Tuning circuit for a receiver, particularly a television receiver |
| 01/12/1999 | US5859569 Current feedback differential amplifier clamp |
| 01/12/1999 | US5859567 For amplifying a radio frequency signal into an amplified rf signal |
| 01/12/1999 | US5859566 Electronic circuit comprising complementary transconductors for filters and oscillators |
| 01/12/1999 | US5859565 Cathode-follower high-fidelity power amplifier |
| 01/12/1999 | US5859564 Integrated circuit |
| 01/12/1999 | US5859561 Differential load amplifier for piezoelectric sensors |
| 01/12/1999 | US5859558 Low voltage analog front end |
| 01/12/1999 | US5859528 Voltage-to-current converter for outputting a current which varies in proportion to an input voltage |
| 01/07/1999 | WO1999000895A1 Power amplifier device |
| 01/07/1999 | WO1999000881A1 A light emitting device and transistor |
| 01/07/1999 | EP0888670A2 Linear high-frequency amplifier with high input impedance and high power efficiency |
| 01/05/1999 | US5856891 System for reading information stored on a disk surface |
| 01/05/1999 | US5856760 Overdrive protection clamp scheme for feedback amplifiers |
| 01/05/1999 | US5856759 Audio output amplifier with parallel class AB stages |
| 01/05/1999 | US5856757 gm-C cell with two stage common mode control and current boost |
| 01/05/1999 | US5856749 Stable output bias current circuitry and method for low-impedance CMOS output stage |
| 01/05/1999 | US5856748 Sensing amplifier with current mirror |
| 01/05/1999 | US5856695 BiCMOS devices |
| 12/30/1998 | WO1998059416A1 A differential amplifier, an integrated circuit, and a telephone |
| 12/30/1998 | WO1998059412A1 Device for driving self arc-extinguishing type power element |
| 12/30/1998 | WO1998045939A3 A bridged driving amplifier and a telecommunication device |
| 12/30/1998 | EP0887924A2 High efficiency RF amplifier |
| 12/30/1998 | EP0887923A1 Tuning amplifier |
| 12/30/1998 | EP0886913A1 A cmos microwave multiphase voltage controlled oscillator |
| 12/30/1998 | EP0822656B1 Circuit arrangement with an operational amplifier |
| 12/30/1998 | EP0656164B1 Television receiver |
| 12/30/1998 | CA2241060A1 High efficiency rf amplifier |
| 12/29/1998 | USRE36013 Differential charge pump circuit with high differential and low common mode impedance |
| 12/29/1998 | US5854971 Output-controlled power amplifier, radio communication terminal and radio communication base station |
| 12/29/1998 | US5854718 Record amplifying circuit for respectively serially and differentially driving sets of series-connected sound and video record heads |
| 12/29/1998 | US5854611 In a wireless communication system |
| 12/29/1998 | US5854574 Reference buffer with multiple gain stages for large, controlled effective transconductance |
| 12/29/1998 | US5854573 Low-voltage multipath-miller-zero-compensated CMOs class-AB operational amplifier |
| 12/23/1998 | EP0886406A1 Differential input stage for wide band reception with high common mode rejection |
| 12/23/1998 | EP0886384A2 Single-stage dual-band low-noise amplifier for use in a wireless communication system receiver |
| 12/23/1998 | EP0886321A1 Threshold voltage adjusting method for a MIS device and charge detecting device |
| 12/23/1998 | EP0886314A1 Semiconductor circuit device capable of reducing influence of a parasitic capacitor |
| 12/23/1998 | EP0885483A1 Push-pull power amplifier |
| 12/23/1998 | EP0885468A1 Slotline-to-coplanar waveguide transition |
| 12/23/1998 | EP0885457A2 Method for making a circuit structure having a flip-mounted matrix of devices |
| 12/22/1998 | US5852527 Amplifying circuit for magnetic record and playback apparatus having magnetic heads with first and second windings connected at a common point |
| 12/22/1998 | US5852521 Amplifier circuit suppressing disturbance signal produced by magnetoresistive head |
| 12/22/1998 | US5852416 High speed arithmetic logic circuit |
| 12/22/1998 | US5852316 Complementary heterojunction amplifier |
| 12/22/1998 | US5851864 Method of fabricating BiCMOS devices |