| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 05/30/2013 | US20130135053 Power amplifier |
| 05/30/2013 | US20130135044 High-frequency power amplifier with doherty extension |
| 05/29/2013 | CN202957789U Audio distortion adjusting and controlling apparatus |
| 05/29/2013 | CN103125076A Reducing non-linearities in a differential receiver path prior to a mixer using calibration |
| 05/29/2013 | CN103125070A Power series digital predistorter and control method thereof |
| 05/29/2013 | CN101971488B Differential current output driver with overvoltage protection |
| 05/29/2013 | CN101147424B Offset correction circuit for voltage-controlled current source |
| 05/28/2013 | US8451061 Amplification of an incoming signal received via an antenna |
| 05/28/2013 | US8451060 Amplifier device |
| 05/28/2013 | US8451055 Distortion compensating apparatus, transmitting apparatus, and distortion compensating method |
| 05/28/2013 | US8451052 Instrumentation input systems |
| 05/28/2013 | CA2743484C Hybrid power control for a power amplifier |
| 05/23/2013 | WO2013074890A1 System linearization |
| 05/23/2013 | WO2013074541A1 Apparatus and methods for voltage converters |
| 05/23/2013 | WO2013074323A2 Low noise auto-zero circuits for amplifiers |
| 05/23/2013 | WO2013072426A1 Replaceable up-stream branch or up-stream amplifier |
| 05/23/2013 | WO2013071959A1 A mos device assembly |
| 05/23/2013 | WO2013021028A3 Asynchronous switch mode supply |
| 05/23/2013 | US20130127646 Multiplying digital-to-analog converter (dac) |
| 05/23/2013 | US20130127547 Efficient supply voltage |
| 05/23/2013 | US20130127546 Bias current monitor and control mechanism for amplifiers |
| 05/23/2013 | US20130127541 Analog Pre-distortion Linearizer |
| 05/23/2013 | US20130127535 Method and System for Optoelectronic Receivers for Uncoded Data |
| 05/23/2013 | US20130127526 Low noise auto-zero circuits for amplifiers |
| 05/22/2013 | EP2595312A1 Automatic gain control circuit and method for automatic gain control |
| 05/22/2013 | CN202949394U Power detection and protection device for microwave amplifier |
| 05/22/2013 | CN202949393U Electron tube preceding stage audio frequency amplifier |
| 05/22/2013 | CN103117719A Precision reference voltage generator of feedforward compensation amplifier |
| 05/22/2013 | CN103117715A System and method for generating a radio frequency pulse-width modulated signal |
| 05/22/2013 | CN103117714A Audio amplifier |
| 05/22/2013 | CN103117713A Chopping amplifier and method of lowering offset voltage of chopping amplifier |
| 05/22/2013 | CN103117712A Complementary metal-oxide-semiconductor (CMOS) high gain broad band low noise amplifier |
| 05/22/2013 | CN103117711A Monolithic integrated radio frequency high-gain low-noise amplifier |
| 05/22/2013 | CN103117710A Differential type low-noise parallel multifrequency amplifier |
| 05/22/2013 | CN101803182B Linear RF amplifier with polar feedback |
| 05/21/2013 | US8447571 Trimming of operative parameters in electronic devices based on corrections mappings |
| 05/21/2013 | US8447570 Predictive sensor readout |
| 05/21/2013 | US8447190 Distortion compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system |
| 05/21/2013 | US8447050 Thermal feedback for switch mode amplification |
| 05/21/2013 | US8446220 Method and apparatus for increasing the effective resolution of a sensor |
| 05/21/2013 | US8446216 Anti-pop circuit |
| 05/16/2013 | WO2013070373A1 Broadband high efficiency amplifier system incorporating dynamic modulation of load impedance |
| 05/16/2013 | WO2013070372A1 BROADBAND AMPLIFIER SYSTEM USING A 3dB QUADRATURE COMBINER TO DYNAMICALLY MODULATE LOAD IMPEDANCE |
| 05/16/2013 | WO2013069213A1 Wireless apparatus and method for manufacturing same |
| 05/16/2013 | WO2013069087A1 Distortion compensating circuit and distortion compensating method |
| 05/16/2013 | US20130120062 Adaptive linearizer with narrowband feedback path |
| 05/16/2013 | US20130120061 Doherty Amplifier Circuit |
| 05/16/2013 | US20130120059 Amplifier circuit and light receiving circuit |
| 05/15/2013 | EP2592750A1 Power series digital predistorter and control method thereof |
| 05/15/2013 | EP2592749A1 Power amplifying circuit and high-frequency module |
| 05/15/2013 | EP2592652A2 Variable capacitor circuit and method |
| 05/15/2013 | EP2591720A1 Biomedical acquisition system with motion artifact reduction |
| 05/15/2013 | EP2591567A2 Controlling a transmit path based on monitored error vector magnitude (evm) performance |
| 05/15/2013 | EP2591548A1 Linear differential amplifier having high input impedance |
| 05/15/2013 | CN202940777U Power amplification system used for intelligent converting station test system |
| 05/15/2013 | CN202940775U Servo isolation amplifying circuit |
| 05/15/2013 | CN202940774U High-efficiency and high-linearity power amplifier |
| 05/15/2013 | CN202940773U Big dipper first-generation low-noise amplifier |
| 05/15/2013 | CN103107781A Protective method and circuit for simultaneous breakover of standard complementary voltage switch type D class power amplifiers |
| 05/15/2013 | CN103107780A Chopping amplifier |
| 05/15/2013 | CN103107779A Device for restraining audio power amplifier impact sound of power amplifier |
| 05/15/2013 | CN103107778A Doherty power amplifier capable of reducing third order intermodulation and modulating method thereof |
| 05/15/2013 | CN103107777A Power amplifying circuit and high-frequency module |
| 05/15/2013 | CN102124303B Wireless telemetry electronic circuitry for measuring strain in high-temperature environments |
| 05/15/2013 | CN102006018B Opening control circuit used for AB class audio amplifier |
| 05/14/2013 | US8441315 Analog circuit and display device and electronic device |
| 05/10/2013 | WO2013065401A1 Power amplifying circuit |
| 05/10/2013 | WO2013064177A1 Receiver non-linear post compensation |
| 05/10/2013 | WO2012085685A3 Accurate bias tracking for process variation and supply modulation |
| 05/09/2013 | US20130114331 Control signal generation circuit and sense amplifier circuit using the same |
| 05/09/2013 | US20130113569 Cross-coupled multipath feedforward operational amplifiers |
| 05/09/2013 | US20130113563 Gain enhancement for cascode structure |
| 05/09/2013 | US20130113560 Power amplifying circuit and high-frequency module |
| 05/09/2013 | US20130113559 Device and method for pre-distorting and amplifying a signal based on an error attribute |
| 05/09/2013 | US20130113553 Chopper |
| 05/08/2013 | EP2589145A1 Predistortion of complex modulated waveform |
| 05/08/2013 | CN202931255U Power amplification driving circuit applied to electric-power carrier communication |
| 05/08/2013 | CN202931254U Active antenna low-noise amplification circuit |
| 05/08/2013 | CN202931253U Doherty功率放大器 Doherty Power Amplifier |
| 05/08/2013 | CN1754312B A method and a device for adjusting power amplifier properties |
| 05/08/2013 | CN103098525A Optimizing power consumption of a base station |
| 05/08/2013 | CN103098368A Output mode switching amplifier |
| 05/08/2013 | CN103096788A A signal processing device for use in electroencephalography and a cable system incorporating the device |
| 05/08/2013 | CN103095228A Intermodulation suppression amplifying circuit and control method |
| 05/08/2013 | CN103095226A Integrated circuit |
| 05/08/2013 | CN103095225A Power amplification transistor circuit and method for improving stability of circuit |
| 05/08/2013 | CN103095224A Complementary metal-oxide-semiconductor transistor (CMOS) broadband low-noise amplifier adopting noise cancellation technology |
| 05/08/2013 | CN103095223A Radio-frequency low-noise amplifier |
| 05/08/2013 | CN103095222A Active Balun with mismatch compensation technology |
| 05/08/2013 | CN103095221A Programmable low noise amplifier and methods for use therewith |
| 05/08/2013 | CN102098007B Mismatch protection device for radio frequency (RF) amplifying circuit and method thereof |
| 05/08/2013 | CN101933228B Lna having a post-distortion mode and a high-gain mode |
| 05/08/2013 | CN101729029B Electronic devices with calibrated radio frequency communications circuitry |
| 05/08/2013 | CN101507104B Energy-efficient consumer device audio power output stage and method of using the same |
| 05/08/2013 | CN101222211B Peak-hold circuit and signal strength indicator using the peak-hold circuit |
| 05/07/2013 | US8437986 Method for detecting and filtering a random noise signal |
| 05/02/2013 | WO2013063364A1 Average frequency control of switcher for envelope tracking |
| 05/02/2013 | WO2013063212A1 Systems and methods for performing multi-modal power amplification |
| 05/02/2013 | WO2013062975A1 Dual mode power amplifier control interface |
| 05/02/2013 | WO2013061138A1 Low-stress cascode structure |