| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 06/25/2013 | US8472911 Wireless communication system |
| 06/25/2013 | US8472643 Power amplifier and method for restraining power of improved power amplifier |
| 06/25/2013 | US8471794 Driving circuit for display apparatus, and method for controlling same |
| 06/25/2013 | US8471639 Method and system for a feedback transimpedance amplifier with sub-40khz low-frequency cutoff |
| 06/25/2013 | US8471638 Doherty amplifier |
| 06/25/2013 | US8471636 Differential pair with constant offset |
| 06/25/2013 | US8471635 Bias circuit and amplifier providing constant output current for a range of common mode inputs |
| 06/25/2013 | US8471634 Method and apparatus of common mode compensation for voltage controlled delay circuits |
| 06/25/2013 | US8471633 Differential amplifier and data driver |
| 06/25/2013 | US8471631 Bias circuit, power amplifier, and current mirror circuit |
| 06/25/2013 | US8471627 Cross current minimization |
| 06/25/2013 | US8471541 Switching power supply device and a semiconductor integrated circuit |
| 06/20/2013 | WO2013090890A1 Low noise amplifier for multiple channels |
| 06/20/2013 | WO2013090851A1 Techniques for pga linearity |
| 06/20/2013 | WO2013090849A1 Load impedance detection |
| 06/20/2013 | WO2013090847A1 Millimeter wave power amplifier |
| 06/20/2013 | WO2013089482A1 Apparatus and circuit for amplifying baseband signal |
| 06/20/2013 | WO2013089163A1 Resonant circuit, distributed amplifier, and oscillator |
| 06/20/2013 | WO2013088635A1 High output power amplifier |
| 06/20/2013 | WO2013087639A1 Electrically variable impedance matching network for an hf power transistor |
| 06/20/2013 | WO2013087124A1 Digital polar modulator for a switch mode rf power amplifier |
| 06/20/2013 | WO2013055615A3 Hybrid coupler |
| 06/20/2013 | WO2013025623A3 Class e amplifier overload detection and prevention |
| 06/20/2013 | US20130156084 Rectifier, received signal strength indicator, and receiver |
| 06/20/2013 | US20130156079 Amplifiers and transceiver devices using the same |
| 06/20/2013 | US20130155777 Current sensing type sense amplifier and method thereof |
| 06/20/2013 | US20130154863 Amplifier, fully-differential amplifier and delta-sigma modulator |
| 06/20/2013 | US20130154806 Accurate Persistent Nodes |
| 06/20/2013 | US20130154745 Clipping circuit, differential amplifying circuit, and amplifying circuit |
| 06/20/2013 | US20130154743 Class ab amplifiers |
| 06/20/2013 | US20130154742 Low Noise Amplifier for Multiple Channels |
| 06/20/2013 | US20130154741 Apparatus and circuit for amplifying baseband signal |
| 06/20/2013 | US20130154740 Techniques for pga linearity |
| 06/20/2013 | US20130154739 Analog circuits having improved transistors, and methods therefor |
| 06/20/2013 | US20130154737 Comparator and amplifier |
| 06/20/2013 | US20130154736 Transient Signal Suppression for a Class-D Audio Amplifier Arrangement |
| 06/20/2013 | US20130154731 N way doherty amplifier |
| 06/20/2013 | US20130154730 Using a new synchronization scheme for a multi-channel class-d amplifier |
| 06/20/2013 | US20130154729 Dynamic loadline power amplifier with baseband linearization |
| 06/20/2013 | US20130154728 Adaptive Filtering of Blocker Signals in Demodulators |
| 06/20/2013 | CA2798943A1 Using a new synchronization scheme for a multi-channel class-d amplifier |
| 06/19/2013 | EP2603974A1 Switched-mode power supply apparatus and method |
| 06/19/2013 | EP2603973A1 High-frequency power amplifier having doherty enhancement |
| 06/19/2013 | CN203014747U Active power amplification board |
| 06/19/2013 | CN203014675U Buck-boost switching power supply and controller thereof |
| 06/19/2013 | CN103168354A Inductor |
| 06/19/2013 | CN103166585A Complementary metal oxide semiconductor (CMOS) amplifying circuit matched with infrared low-impedance photoconductive detector |
| 06/19/2013 | CN103166584A Complementary metal-oxide-semiconductor transistor (CMOS) amplifier strengthening sinking current and driving capacitive load |
| 06/19/2013 | CN103166583A Linear amplifier that perform level shift and method of level shifting |
| 06/19/2013 | CN103166582A Improved type capacity amplifying circuit |
| 06/19/2013 | CN103166581A Radio frequency low noise amplifier with high linearity |
| 06/19/2013 | CN103166580A Radio frequency power amplification module and high power radio frequency power supply with heat dissipation air channel |
| 06/19/2013 | CN103166579A Amplifying apparatus |
| 06/19/2013 | CN103166576A Latch type sense amplifier capable of resisting turn of single particle |
| 06/19/2013 | CN102158182B 功率放大器 PA |
| 06/19/2013 | CN101919158B Average power efficiency enhancement and linearity improvement of microwave power amplifiers |
| 06/19/2013 | CN101615894B Adjustable linear operation transconductance amplifier |
| 06/19/2013 | CN101485082B D类音频放大器 Class-D audio amplifier |
| 06/19/2013 | CN101473529B Switch mode power magnification |
| 06/18/2013 | US8466748 Amplifier circuit and method for conditioning an output current signal of a detector element |
| 06/18/2013 | US8466747 Integrated-circuit amplifier with low temperature rise |
| 06/18/2013 | US8466746 Three-stage GaN HEMT doherty power amplifier for high frequency applications |
| 06/18/2013 | US8466744 Amplifier and signal filter |
| 06/18/2013 | US8466743 Ground-referenced common-mode amplifier circuit and related method |
| 06/18/2013 | US8466742 Large time constant steering circuit and instrumentation amplifier implementing same |
| 06/18/2013 | CA2722958C Smoke sensor |
| 06/13/2013 | WO2013086361A1 Transformer power combiner with filter response |
| 06/13/2013 | WO2013084778A1 Predistorter, predistorter control method |
| 06/13/2013 | WO2013084066A1 A selection circuit and an amplifier comprising the same |
| 06/13/2013 | US20130149979 Amplifier |
| 06/13/2013 | US20130148453 Current-mode Sense Amplifier for high-speed sensing |
| 06/13/2013 | US20130148452 Voltage shifting sense amplifier for sram vmin improvement |
| 06/13/2013 | US20130148432 Sense amplifier with offset current injection |
| 06/13/2013 | US20130147560 Low noise amplifier with back-to-back connected diodes and back-to-back connected diode with high impedance thereof |
| 06/13/2013 | US20130147559 Fully differential autozeroing amplifier |
| 06/13/2013 | US20130147558 Buffer circuit |
| 06/13/2013 | US20130147556 Squelch Detection Method and Circuit Using Rectifying Circuit for Detecting Out-of-Band Signal |
| 06/13/2013 | US20130147555 Squelch Detection Method and Circuit Using Dual Rectifying Circuit for Detecting Out-of-Band Signal |
| 06/13/2013 | US20130147554 Low-power high-gain multistage comparator circuit |
| 06/13/2013 | US20130147553 Auto-zero amplifier and feedback amplifier circuit using the auto-zero amplifier |
| 06/13/2013 | US20130147552 Class-d amplifier |
| 06/13/2013 | US20130147551 Amplifying apparatus |
| 06/13/2013 | US20130147549 Amplifier |
| 06/12/2013 | EP2602932A1 Power modulator, and method for controlling same |
| 06/12/2013 | EP2602930A1 Transmitter and method for controlling same |
| 06/12/2013 | CN202998011U Multi-configuration analogy amplifying circuit |
| 06/12/2013 | CN202998010U Power amplifying circuit for Beidou satellite navigation |
| 06/12/2013 | CN103155601A Hearing aid and a method of driving an output stage |
| 06/12/2013 | CN103155431A Tunable radio front end and methods |
| 06/12/2013 | CN103152032A Crystal oscillating circuit |
| 06/12/2013 | CN103151997A High fidelity power amplifier |
| 06/12/2013 | CN103151996A Reconfigurable filter |
| 06/12/2013 | CN103151995A Digital tri-state class-D amplifier |
| 06/12/2013 | CN103151994A Stereo preamplifier |
| 06/12/2013 | CN103151993A Precision alternating current amplifier |
| 06/12/2013 | CN103151992A Selection circuit and amplifier comprising same |
| 06/12/2013 | CN103151989A Logarithmic amplifier with low voltage and low temperature coefficient |
| 06/12/2013 | CN103151370A Compound semiconductor device and manufacturing method of the same |
| 06/12/2013 | CN102055417B 驱动放大器电路 Driver amplifier circuit |
| 06/12/2013 | CN101473532B Amplifying circuit and method |