| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 09/16/2009 | CN100542017C Signal processing circuit and communication device using the same |
| 09/16/2009 | CN100542016C Electronic circuit for amplification of a bipolar signal |
| 09/16/2009 | CN100542015C Image display apparatus and high voltage driver circuit |
| 09/16/2009 | CN100542014C Electronic circuit for converting signal and amplifier incorporating same |
| 09/16/2009 | CN100542013C Light receiving amplification circuit |
| 09/15/2009 | US7590393 Low-noise transmitter system and method |
| 09/15/2009 | US7590251 Clip detection in PWM amplifier |
| 09/15/2009 | US7589593 Amplifier circuit having stacked main amplifier and parallel sub-amplifier |
| 09/15/2009 | US7589592 System and method for pre-charging a current mirror |
| 09/15/2009 | US7589591 Differential sensing with high common mode rejection |
| 09/15/2009 | US7589590 Circuit architecture having differential processing for use in half bridges and full bridges and methods therefore |
| 09/15/2009 | US7589589 Power amplifying apparatus and mobile communication terminal |
| 09/15/2009 | US7589316 Scanning beam imaging with adjustable detector sensitivity or gain |
| 09/11/2009 | WO2009110455A1 Semiconductor differential amplifier |
| 09/11/2009 | WO2009109808A2 Baseband-derived rf digital predistortion |
| 09/11/2009 | WO2009082582A3 Method and apparatus for direct digital to radio frequency conversion |
| 09/11/2009 | WO2007122586A3 A high power integrated rf amplifier |
| 09/10/2009 | US20090226188 Burst-mode automatic gain control circuit |
| 09/10/2009 | US20090224835 High speed preamplifier circuit, detection electronics, and radiation detection systems therefrom |
| 09/10/2009 | US20090224834 Switched Capacitor Voltage Converter For A Power Amplifier |
| 09/10/2009 | US20090224833 Amplifier |
| 09/10/2009 | US20090224832 System and method of enabling a signal processing device in a relatively fast manner to process a low duty cycle signal |
| 09/10/2009 | US20090224831 Cancellation of common mode oscillation in rf circuits |
| 09/10/2009 | US20090224830 Two-stage operational amplifier with class ab output stage |
| 09/10/2009 | US20090224829 Adaptive operational transconductance amplifier load compensation |
| 09/10/2009 | US20090224683 Complimentary Application Specific Integrated Circuit for Compact Fluorescent Lamps |
| 09/10/2009 | US20090224141 Linear distributed pixel differential amplifier having mirrored inputs |
| 09/10/2009 | US20090224140 Solid-state imaging device |
| 09/09/2009 | EP2099127A1 High voltage modulator with transformer |
| 09/09/2009 | EP2097973A1 Dynamic range improvements of load modulated amplifiers |
| 09/09/2009 | EP1908167B1 Compensation for parasitic coupling between rf or microwave transistors in the same package |
| 09/09/2009 | EP1363394B1 Switching power amplifier, and switching control method of the switching power amplifier |
| 09/09/2009 | CN201307847Y Efficient tracking power supply source employing power amplification circuit |
| 09/09/2009 | CN101529719A A commutating auto zero amplifier |
| 09/09/2009 | CN101529718A Transmission method and transmission device |
| 09/09/2009 | CN101529717A Voltage-boosting stage |
| 09/09/2009 | CN101529716A Power amplifier |
| 09/09/2009 | CN101527549A Amplifier circuit with function of voltage interpolation |
| 09/09/2009 | CN101527548A Circuit and method for generating PWM control signals by class D amplifier |
| 09/09/2009 | CN101527547A Method and related device for controlling power output stage of power amplifier |
| 09/09/2009 | CN101527546A D-type power amplifier |
| 09/09/2009 | CN101527545A Doherty envelope tracking power amplifier and method for treating radio frequency signal |
| 09/09/2009 | CN101527544A Device and method for identifying inverse characteristic of nonlinear system, power amplifier and predistorter thereof |
| 09/09/2009 | CN101527542A Minimized common mode oscillation multistage amplifier circuits, method, and integrated circuit |
| 09/09/2009 | CN101526258A Communication circuit of central air conditioner |
| 09/09/2009 | CN100539449C Activation signal output circuit |
| 09/09/2009 | CN100539403C Electric amplifier |
| 09/09/2009 | CN100539402C Automatic LDMOS biasing with long term hot carrier compensation |
| 09/09/2009 | CN100539401C Method and device for amplifying a reception signal |
| 09/08/2009 | US7587175 Radio frequency unit analog level detector and feedback control system |
| 09/08/2009 | US7586504 Amplifier circuit, driving circuit of display apparatus, portable telephone and portable electronic apparatus |
| 09/08/2009 | US7586376 Pre-power amplifier of load, switch array, and impedance compensation |
| 09/08/2009 | US7586375 Active circuit having improved linearity using multiple gated transistor |
| 09/08/2009 | US7586374 Wireless communication unit, integrated circuit and biasing therefor |
| 09/08/2009 | US7586373 Fully differential class AB amplifier and amplifying method using single-ended, two-stage amplifier |
| 09/08/2009 | US7586372 Programmable gain-frequency profile amplifier |
| 09/08/2009 | US7586371 Regulator circuit |
| 09/08/2009 | US7586370 Class D amplifier |
| 09/08/2009 | US7586369 Pulse modulation type electric power amplifier |
| 09/08/2009 | US7586081 Output impedance varying circuit |
| 09/03/2009 | WO2009106628A1 Improved filter for switched mode power supply |
| 09/03/2009 | WO2009106249A1 Switched mode amplifier |
| 09/03/2009 | WO2009087482A3 Low noise amplifier |
| 09/03/2009 | WO2009066211A3 Transceiving circuit for contactless communication |
| 09/03/2009 | US20090219096 Open loop dc control for a transimpedance feedback amplifier |
| 09/03/2009 | US20090219095 Operational transconductance amplifier (ota) |
| 09/03/2009 | US20090219094 Differential amplifier circuit and frequency mixer for improving linearity |
| 09/03/2009 | US20090219093 Amplifier with active inductor |
| 09/03/2009 | US20090219092 Highly linear differential amplifier with a novel resistive source degeneration network |
| 09/03/2009 | US20090219091 System and method for measuring the output of a photodetector |
| 09/03/2009 | US20090219090 Output dc offset protection for class d amplifiers |
| 09/03/2009 | US20090219089 Amplifier arrangement and method |
| 09/03/2009 | US20090219087 Travelling wave amplifier |
| 09/03/2009 | US20090219052 Transmitter swing control circuit and method |
| 09/03/2009 | US20090218477 Image sensing apparatus and image sensing system |
| 09/02/2009 | EP2096754A1 Optical receiver |
| 09/02/2009 | EP2096753A1 Switching amplifier |
| 09/02/2009 | EP2096752A1 Switched mode amplifier |
| 09/02/2009 | EP2095502A1 Transconductance amplifier with improved linearity |
| 09/02/2009 | EP2095501A1 Transconductance amplifier with a filter for rejecting noise outside the useful band |
| 09/02/2009 | EP2027651A4 Improved control of switcher regulated power amplifier modules |
| 09/02/2009 | EP2027650A4 Input drive control for switcher regulated power amplifier modules |
| 09/02/2009 | CN101521491A Radio-frequency power regulation method and radio-frequency power amplifier |
| 09/02/2009 | CN101521489A Amplifier and class AB amplifier |
| 09/02/2009 | CN101521486A Bias circuit of power amplifier |
| 09/02/2009 | CN100536327C Operational amplifier of full voltage range input and output |
| 09/02/2009 | CN100536326C Differential amplifier, digital-to-analog converter, and display device |
| 09/02/2009 | CN100536323C Power amplifier module |
| 09/02/2009 | CN100536317C Television switch module |
| 09/01/2009 | USRE40900 Amplifier circuit |
| 09/01/2009 | US7584009 Multi-chip PWM synchronization and communication |
| 09/01/2009 | US7583752 Transmitter for outputting differential signals of different voltage levels |
| 09/01/2009 | US7583166 Inductor Q factor enhancement apparatus has bias circuit that is coupled to negative resistance generator for providing bias signal |
| 09/01/2009 | US7583150 Power efficient multistage amplifier and design method |
| 09/01/2009 | US7583149 Power supply apparatus, amplifier apparatus, radio apparatus and reproducing apparatus |
| 09/01/2009 | US7583147 Buffer drive |
| 09/01/2009 | US7583146 Balanced differential cross-coupled transconductance amplifier for a multiplexor |
| 09/01/2009 | US7583145 Hybrid output stage apparatus and related method thereof |
| 09/01/2009 | US7583144 Power efficient programmable amplifier |
| 09/01/2009 | US7583143 Method and system for digitally controlling transmitter gain compensation |