| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 09/12/2007 | CN101036290A 运算放大器 Operational Amplifier |
| 09/12/2007 | CN101034877A Balance power amplifier based on 90 degree branch mixed electrical bridge |
| 09/12/2007 | CN101034876A High-frequency signal coupling device |
| 09/12/2007 | CN101034875A Class d audio amplifier with PWM and feedback |
| 09/12/2007 | CN101034874A Adaptive linear amplifier |
| 09/12/2007 | CN101034873A Lower voltage conductor-spanning amplifier capable of improving the linearity and input range |
| 09/12/2007 | CN101034872A Method and system for improving the power amplifier linearity |
| 09/12/2007 | CN101034871A Power circuit of field effect tube microwave amplifier |
| 09/12/2007 | CN100337409C Linear power amplification distortion counteracting method |
| 09/12/2007 | CN100337398C 传感器信号输出电路 The sensor signal output circuit |
| 09/12/2007 | CN100337397C Rf功率放大器电路 Rf power amplifier circuit |
| 09/12/2007 | CN100337241C Method of reducing the area of transconductance capacitor filter |
| 09/12/2007 | CN100336771C Oxide ceramic material, ceramic substrate employing the same, ceramic laminate device, and power amplifier module |
| 09/11/2007 | US7269392 Electric component for communication device and semiconductor device for switching transmission and reception |
| 09/11/2007 | US7269254 Integrated driver circuitry |
| 09/11/2007 | US7269232 Device for producing a phase and amplitude modulated radio frequency signal |
| 09/11/2007 | US7268628 Preamplifier |
| 09/11/2007 | US7268627 Pre-matching of distributed and push-pull power transistors |
| 09/11/2007 | US7268625 Method and apparatus for a linear transconductance device |
| 09/11/2007 | US7268624 Differential amplifier offset voltage minimization independently from common mode voltage adjustment |
| 09/11/2007 | US7268623 Low voltage differential signal driver circuit and method for controlling the same |
| 09/11/2007 | US7268622 Analog preamplifier calibration |
| 09/11/2007 | US7268621 Digital amplifier |
| 09/11/2007 | US7268618 Power amplifiers |
| 09/11/2007 | US7268617 Doherty microwave amplifier and signal processing method thereof |
| 09/11/2007 | US7268616 Method and apparatus for an improved power amplifier |
| 09/11/2007 | US7268338 Imaging array having variable conversion gain |
| 09/07/2007 | WO2007100697A2 Class-e radio frequency power amplifier with feedback control |
| 09/07/2007 | WO2007100682A1 Class-e radio frequency amplifier for use with an implantable medical device |
| 09/07/2007 | WO2007100334A1 Class-d amplifier and method therefor |
| 09/07/2007 | WO2007099621A1 Communication apparatus |
| 09/07/2007 | WO2007099442A1 Hybrid feedback controlled oscillation modulator and switching power amplifier system |
| 09/07/2007 | WO2007099078A1 Assembly for increasing the transmission power |
| 09/07/2007 | WO2007098766A1 Digital self-oscillating modulator |
| 09/06/2007 | US20070207748 Antenna interface unit |
| 09/06/2007 | US20070206395 Class E Amplifier With Inductive Clamp |
| 09/06/2007 | US20070205829 Single-ended input to differential-ended output low noise amplifier |
| 09/06/2007 | US20070205828 Switched mode power amplifier using lumped element impedance inverter for parallel combining |
| 09/06/2007 | US20070205827 Doherty Amplifier |
| 09/06/2007 | US20070205812 Current drive circuit reducing VDS dependency |
| 09/05/2007 | EP1830464A1 Digital self-oscillating modulator |
| 09/05/2007 | EP1829238A1 Signal repeater system |
| 09/05/2007 | CN101031855A Constant voltage generating circuit |
| 09/05/2007 | CN101031165A Enhanced loundspeaker interface and superstrong loundspeaker |
| 09/05/2007 | CN101030761A Power amplifier bias protection for depletion mode transistor |
| 09/05/2007 | CN101030760A Self-adaptive grid-voltage compensator and its compensation |
| 09/05/2007 | CN100336299C Power amplification for parametric loudspeakers |
| 09/04/2007 | US7265643 Tunable isolator |
| 09/04/2007 | US7265632 Amplifier circuit, and system incorporating same |
| 09/04/2007 | US7265631 Transimpedance amplifier with signal amplification circuit that performs power signal regulation |
| 09/04/2007 | US7265630 Millimeter-wave unilateral low-noise amplifier |
| 09/04/2007 | US7265629 Circuit and method for automatic gain control |
| 09/04/2007 | US7265628 Margin tracking cascode current mirror system and method |
| 09/04/2007 | US7265625 Amplifier systems with low-noise, constant-transconductance bias generators |
| 09/04/2007 | US7265624 Amplifier circuit |
| 09/04/2007 | US7265623 Differential amplifier having independently tunable base gain, peak gain and boost frequency, and uses of same |
| 09/04/2007 | US7265622 Differential difference amplifier |
| 09/04/2007 | US7265621 Fully differential operational amplifier with fast settling time |
| 09/04/2007 | US7265620 Wide-band high-gain limiting amplifier with parallel resistor-transistor source loads |
| 09/04/2007 | US7265619 Two stage microwave Class E power amplifier |
| 09/04/2007 | US7265618 RF power amplifier having high power-added efficiency |
| 09/04/2007 | US7265617 Class-D amplifier |
| 09/04/2007 | US7265616 Charge amplifier |
| 09/04/2007 | US7265615 Multiple differential amplifier system and method for transconductance mismatch compensation |
| 09/04/2007 | US7265613 Low-distortion tri-state switching amplifier |
| 09/04/2007 | US7265612 Low-distortion tri-state switching amplifier |
| 09/04/2007 | US7265611 Self zeroing for critical, continuous-time applications |
| 09/04/2007 | US7265609 Transconductor circuits |
| 09/04/2007 | US7265593 Slew rate enhancement circuit via dynamic output stage for adjusting gamma curve |
| 09/04/2007 | US7265582 Level shifter |
| 09/04/2007 | US7265333 Light-receiving circuit |
| 09/04/2007 | US7265329 Image sensors with distributed amplifiers and related methods |
| 08/30/2007 | WO2007098394A2 Multiplier-transimpedance amplifier combination with input common mode feedback |
| 08/30/2007 | WO2007096940A1 Semiconductor circuit |
| 08/30/2007 | WO2007096761A1 Audio power conversion system |
| 08/30/2007 | US20070202814 Wireless communication semiconductor integrated circuit device and wireless communication system |
| 08/30/2007 | US20070202813 Wireless communication semiconductor integrated circuit device and wireless communication system |
| 08/30/2007 | US20070201706 Acoustic signal generating apparatus |
| 08/30/2007 | US20070200631 Amplifier circuit improved in linearity and frequency band |
| 08/30/2007 | US20070200630 Systems and methods for common mode detection |
| 08/30/2007 | US20070200629 Low voltage amplifier having a class-AB control circuit |
| 08/30/2007 | US20070200628 Gain boosting for tuned differential LC circuits |
| 08/30/2007 | US20070200627 Methods and apparatus for process invariant transconductance |
| 08/30/2007 | US20070200626 Power Supply Compensation |
| 08/30/2007 | US20070200622 Modulator apparatus operating at low supply voltage, and corresponding method of modulation |
| 08/30/2007 | US20070200621 Pwm digital amplifier with high-order loop filter |
| 08/30/2007 | DE102006006568A1 Verstärkereinrichtung Amplifier device |
| 08/29/2007 | EP1825593A1 Broadband high efficiency traveling wave tube amplifier system |
| 08/29/2007 | EP1825592A1 A power multiplier apparatus and method |
| 08/29/2007 | EP1579573B1 Apparatus and method for safely handling asynchronous shutdown of pulsewidth modulated output |
| 08/29/2007 | EP1493158B1 Single-ended current sense amplifier |
| 08/29/2007 | EP1391046B1 Non-linear transistor circuits with thermal stability |
| 08/29/2007 | CN200941600Y Difference preamplifier |
| 08/29/2007 | CN200941599Y RF pre-distovtion aircuit |
| 08/29/2007 | CN101027844A High power parallel block-up converter |
| 08/29/2007 | CN101027837A Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility |
| 08/29/2007 | CN101026361A Compensated operational amplification circuit and related method |
| 08/29/2007 | CN101026360A Radio frequency power amplifying module with hetero junction bipolar transistor |
| 08/29/2007 | CN101026359A 运算放大器 Operational Amplifier |
| 08/29/2007 | CN101026358A Offset elimination amplifier and its control method, and display device using same |