| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 04/11/2001 | EP1091486A2 Galvanically isolating circuit |
| 04/11/2001 | EP1091485A1 Input stage for buffer with negative feedback |
| 04/11/2001 | EP1091442A2 Circuit for dealing with higher harmonics and circuit for amplifying power efficiency |
| 04/11/2001 | EP1090457A1 Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
| 04/11/2001 | EP0974082A4 Output buffer having a predriver for compensating slew rate against process variations |
| 04/11/2001 | EP0908005B1 Differential amplifier |
| 04/11/2001 | CN1291004A Integrated circuit device with self-bias and single plug pin radio frequency signal input |
| 04/11/2001 | CN1290998A Semiconductor amplifying circuit and capacitor loudspeaker of semiconductor electret |
| 04/10/2001 | USRE37130 Signal conditioning apparatus |
| 04/10/2001 | US6215987 Mobile communication transmitter capable of selectively activating amplifiers |
| 04/10/2001 | US6215816 Physical layer interface device |
| 04/10/2001 | US6215435 Linear current sensing circuit for motor controller |
| 04/10/2001 | US6215360 Semiconductor chip for RF transceiver and power output circuit therefor |
| 04/10/2001 | US6215357 Operational amplifier |
| 04/10/2001 | US6215356 Power amplifier arrangement |
| 04/10/2001 | US6215355 Constant impedance for switchable amplifier with power control |
| 04/10/2001 | US6215354 Closed loop calibration for an amplitude reconstruction amplifier |
| 04/10/2001 | US6215333 Comparator for a wide supply voltage range |
| 04/10/2001 | US6215302 Preamplifier and method for measuring resistance of a resistive transducer |
| 04/10/2001 | US6215292 Method and device for generating an output current |
| 04/07/2001 | CA2323023A1 Double balanced mixer |
| 04/05/2001 | WO2001024471A1 Method and apparatus for multiple channel signal processing |
| 04/05/2001 | WO2001024388A1 Transceiver operation in radio system |
| 04/05/2001 | WO2001024363A2 An integrated circuit having a filter with charge balancing scheme to reduce transient disturbances |
| 04/05/2001 | WO2001024351A1 Pulse-width modulated bridge circuit within a second bridge circuit |
| 04/05/2001 | WO2001024271A1 Improved heat dissipation in an amplifier circuit by interleaved configuration of two power transistors |
| 04/05/2001 | WO2001024168A1 Circuit for reduction and optimization of write-to-read settling times in magnetic medium storage devices |
| 04/04/2001 | EP1088395A1 A power switching circuit |
| 04/04/2001 | EP1088393A1 Amplifier arrangement |
| 04/04/2001 | EP1088392A1 Transmitter amplifier circuit |
| 04/04/2001 | EP1088391A1 Improved operational amplifier output stage |
| 04/04/2001 | EP1088389A1 Driver amplifiers with low noise standby mode characteristics |
| 04/04/2001 | EP1025639A4 Transimpedance amplifier with automatic gain control |
| 04/04/2001 | CN1290423A 微波放大器 Microwave amplifier |
| 04/04/2001 | CN1064201C Method for adjusting transmission power and base station |
| 04/04/2001 | CN1064196C Semiconductor integrated circuit with differential circuit |
| 04/04/2001 | CN1064195C Imbalance/balance transformation super-fidelity open-loop transistor constant-current amplifier |
| 04/04/2001 | CN1064194C Monolithic integrated circuit device having microwave power amplifer |
| 04/03/2001 | US6211737 Variable gain amplifier with improved linearity |
| 04/03/2001 | US6211736 Signal amplifying circuit for magnetoresistive element |
| 04/03/2001 | US6211735 RF power amplifier having improved power supply for RF drive circuits |
| 04/03/2001 | US6211732 Comb linear amplifier combiner (CLAC) |
| 04/03/2001 | US6211730 Pre-amplifier circuit |
| 04/03/2001 | US6211729 Amplifier circuit with a switch bypass |
| 04/03/2001 | US6211728 Modulation scheme for filterless switching amplifiers |
| 04/03/2001 | US6211717 Multiple differential pair transistor architecture having transconductance proportional to bias current for any transistor technology |
| 04/03/2001 | US6211716 Baseline wander compensation circuit and method |
| 04/03/2001 | US6211658 Balanced voltage reference circuit, integrated with one or more amplifier circuits, for operating point adjustment |
| 04/03/2001 | CA2055410C Composite bridge amplifier |
| 03/29/2001 | WO2001022604A1 Method and apparatus for wireless phone transmit power amplification with reduced power consumption |
| 03/29/2001 | WO2001022585A1 Adaptive dead time control for pushing-pull switching circuits |
| 03/29/2001 | WO2001022574A1 Feedforward multi-terminal power-synthesizing power amplifier |
| 03/29/2001 | WO2001022572A1 Modulated radio signal transmitter with self-adapted amplification polarisation |
| 03/29/2001 | WO2001022564A1 Output stage utilizing a floating power supply |
| 03/29/2001 | CA2384412A1 Method and apparatus for wireless phone transmit power amplification with reduced power consumption |
| 03/28/2001 | EP1087522A2 An integrated circuit device having a self-biased, single pin radio frequency signal input |
| 03/28/2001 | EP1087521A1 Methods and apparatus for adaptive adjustment of feed-forward linearized amplifiers |
| 03/28/2001 | EP1087383A2 Apparatus for scanning optical recording media |
| 03/28/2001 | EP1086528A1 Dual band transmitter |
| 03/28/2001 | EP1086527A2 A method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and circuit |
| 03/28/2001 | EP1086526A2 A method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and the circuit |
| 03/28/2001 | CN1289477A If amplifier |
| 03/28/2001 | CN1063892C AM-FM transmitter power amplifier using class-BC |
| 03/27/2001 | US6208888 Voltage sensing system with input impedance balancing for electrocardiogram (ECG) sensing applications |
| 03/27/2001 | US6208482 Signal amplifying circuit for an MR element |
| 03/27/2001 | US6208208 Operationally amplifying method and operational amplifier |
| 03/27/2001 | US6208207 Adaptive linearizer for RF power amplifiers |
| 03/27/2001 | US6208206 Frequency compensation techniques for low-power multistage amplifiers |
| 03/27/2001 | US6208205 Amplifier circuit and method for reducing noise therein |
| 03/27/2001 | US6208203 Low-noise amplifier |
| 03/27/2001 | US6208202 High efficiency switched gain power amplifier |
| 03/27/2001 | US6208174 High-speed comparator systems and methods with enhanced noise rejection |
| 03/22/2001 | WO2001020778A1 Low noise amplifier arrangement |
| 03/22/2001 | WO2001020777A1 Impedance adapting amplifier device for low frequency with electronic tubes insertible on line in the path of the low frequency signal |
| 03/22/2001 | DE19938448A1 Bipolar electric reception signal amplification arrangement |
| 03/21/2001 | EP1084532A1 Linear quad variable gain amplifier and method for implementing same |
| 03/21/2001 | EP1084520A1 A balun for coaxial cable transmission |
| 03/21/2001 | EP0929936B1 Multiple preamplifier circuit for a television tuner |
| 03/20/2001 | US6205171 Antenna selector switch |
| 03/20/2001 | US6204731 Power amplifier |
| 03/20/2001 | US6204730 Power amplifier arrangement |
| 03/20/2001 | US6204729 H-bridge power amplifier for a motor |
| 03/20/2001 | US6204715 Signal amplifying circuit |
| 03/15/2001 | WO2001018958A1 An amplifier for use in a mobile phone |
| 03/15/2001 | WO2001018957A1 Amplifier |
| 03/15/2001 | WO2001018956A1 High efficiency power amplifier |
| 03/15/2001 | WO2001018865A1 High-frequency power amplification module and radio communication device |
| 03/15/2001 | WO2001018814A1 Pseudo-differential current sense amplifier with hysteresis |
| 03/15/2001 | DE10035066A1 Load adjusting system for power amplifier for battery-powered radiotelephone has processing circuit which retrieves stored control values to generate load control signal |
| 03/14/2001 | EP1083676A1 Optical amplifier |
| 03/14/2001 | EP1083655A2 Amplifier circuit |
| 03/14/2001 | CN2423680Y High-sensitive anti-interference antenna amplifier |
| 03/14/2001 | CN1287415A Method and apparatus using for automatic predistortion system |
| 03/14/2001 | CN1287408A Mutual impedance amplifier |
| 03/14/2001 | CN1287407A Power amplifier for mobile telephone set |
| 03/14/2001 | CN1287349A Equipment for scanning optical recording medium |
| 03/14/2001 | CN1063302C Open-loop transistor constant current amplifier |
| 03/13/2001 | US6201446 Adaptive bandwidth stabilization for an integrated circuit amplifier |
| 03/13/2001 | US6201445 High frequency power amplifier |
| 03/13/2001 | US6201442 Amplifying circuit |