| 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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| 10/24/2013 | US20130278337 Differential signal correction circuit |
| 10/24/2013 | US20130278334 Slew rate and bandwidth enhancement in reset |
| 10/24/2013 | US20130278333 Optimizing cascade gain stages in a communication system |
| 10/24/2013 | US20130278332 Doherty amplifying apparatus and method |
| 10/24/2013 | US20130278331 Reference Potential Converter Circuit |
| 10/23/2013 | EP2654204A2 Distortion cancellation in analog circuits |
| 10/23/2013 | EP2654203A1 An amplifier circuit, a method, and a computer program for amplifying a modulated radio-frequency signal |
| 10/23/2013 | EP2652871A1 Apparatus and methods for capacitive load reduction |
| 10/23/2013 | EP2652870A1 Cancelation of gain change due to amplifier self-heating |
| 10/23/2013 | EP2499739B1 Method for determining a matching network based on poincaré discs of reflection factors |
| 10/23/2013 | CN103370874A Apparatus and methods for capacitive load reduction |
| 10/23/2013 | CN103368512A Multichannel differential amplification circuit and accuracy compensation method thereof |
| 10/23/2013 | CN103368509A 跨导运算放大器 Transconductance operational amplifier |
| 10/23/2013 | CN103368507A Sound wave excitation signal amplifier with turn-off controlling function |
| 10/23/2013 | CN103368506A 宽带可变增益放大器 Wideband variable gain amplifier |
| 10/23/2013 | CN103368505A Improved power amplifier lookup table predistortion method |
| 10/23/2013 | CN103368504A Reflection-type nonlinear pre-distortion circuit |
| 10/23/2013 | CN103368503A MEMS device front-end charge amplifier and related method |
| 10/23/2013 | CN103368502A Compensating circuit and method of amplifier driving large capacitive load |
| 10/23/2013 | CN102045077B Integrally packaged intermediate frequency receiver assembly |
| 10/23/2013 | CN102007687B Amplitude control circuit, polar modulation transmission circuit and polar modulation method |
| 10/23/2013 | CN101911477B Predistorter |
| 10/22/2013 | US8564369 Linear amplifier |
| 10/22/2013 | US8564368 Digital Predistorter (DPD) structure based on dynamic deviation reduction (DDR)-based volterra series |
| 10/22/2013 | US8564366 High-frequency power amplifier device |
| 10/17/2013 | WO2013155197A1 Adaptive rail power amplifier technology |
| 10/17/2013 | WO2013154013A1 Power amplifier |
| 10/17/2013 | WO2013153894A1 Cascode amplifier and amplifier circuit |
| 10/17/2013 | WO2013153485A1 Digital predistorter (dpd) structure based on dynamic deviation reduction (ddr)-based volterra series |
| 10/17/2013 | US20130271220 Semiconductor device |
| 10/17/2013 | US20130271219 Apparatus and methods for frequency compensation of an amplifier |
| 10/17/2013 | US20130271213 Signal processing circuit with circuit induced noise cancellation |
| 10/17/2013 | US20130271212 Digital Predistorter (DPD) Structure Based On Dynamic Deviation Reduction (DDR)-Based Volterra Series |
| 10/17/2013 | DE112012000470T5 Vorrichtung und Verfahren zur Miller-Kompensation bei mehrstufigen Verstärkern Apparatus and method for Miller compensation in multi-stage amplifiers, |
| 10/17/2013 | DE102013206838A1 System und verfahren für einen kapazitiven signalverstärker mit hohem eingangssignal System and method for a capacitive signal amplifier with high input signal |
| 10/16/2013 | CN203243282U 自适应放大电路 Adaptive amplifier circuit |
| 10/16/2013 | CN103354443A CTCMFB (continuous time common-mode feedback) circuit applied to high-speed fully differential operational amplifier |
| 10/16/2013 | CN102355203B Intelligent output technology of microwave power amplifier |
| 10/16/2013 | CN101902242B Radio-frequency front-end circuit with single-ended input differential output applied to ultra-wideband system |
| 10/15/2013 | US8558621 Driver amplifier circuit and communication system |
| 10/15/2013 | US8558616 Amplifying apparatus |
| 10/15/2013 | US8558615 Apparatus for and method of controlling a predistorter, and method of detecting power control state |
| 10/15/2013 | US8558612 Electronic device and method for an amplifier with resistive feedback |
| 10/10/2013 | WO2013152290A1 Headphone amplifier |
| 10/10/2013 | WO2013150156A1 Extremely high frequency dual-mode class ab power amplifier |
| 10/10/2013 | US20130266156 Sensor amplifier arrangement and method for amplification of a sensor signal |
| 10/10/2013 | US20130263665 Mems device front-end charge amplifier |
| 10/09/2013 | EP2648334A1 Mems device front-end charge amplifier |
| 10/09/2013 | EP2648333A2 Sensor amplifier arrangement and method for amplifying a sensor signal |
| 10/09/2013 | EP2648332A1 Pre-amplifier polarisation device |
| 10/09/2013 | EP2647123A1 Bias point setting for third order linearity optimization of class a amplifier |
| 10/09/2013 | CN203233366U Intermodulation suppressing amplification circuit |
| 10/09/2013 | CN203233365U Low noise amplifier with encapsulated and protective circuit |
| 10/09/2013 | CN203233364U Infrared detector based on low noise amplifier |
| 10/09/2013 | CN203233363U Automotive antenna amplifier with spacing device |
| 10/09/2013 | CN103346792A Method and device for eliminating clock jitter in analog-to-digital conversion and digital pre-distortion method |
| 10/09/2013 | CN103346744A Current arithmetic device |
| 10/09/2013 | CN103346741A Double-circuit noise canceling type current-reuse low noise amplifier |
| 10/09/2013 | CN103346740A Class D audio power amplifier for suppressing noise and audio signal processing method thereof |
| 10/09/2013 | CN103346739A System and method for amplifying G-class voice frequency |
| 10/09/2013 | CN102217262B Method for transmitting radio frequency signals and base station device |
| 10/08/2013 | US8554518 Discrete principal component analysis (DPCA) for pattern recognition and diagnostics of tissue pathologies such as cancer |
| 10/08/2013 | US8554517 Physiological signal quality classification for ambulatory monitoring |
| 10/08/2013 | US8552803 Amplifier with dynamic bias |
| 10/08/2013 | US8552798 Method for offset compensation of a switched-capacitor amplifier and switched capacitor amplifier arrangement |
| 10/03/2013 | WO2013145748A1 Amplifier and amplification method |
| 10/03/2013 | WO2013144277A1 Determination of envelope shaping and signal path predistortion of an et amplification stage using device characterisation data |
| 10/03/2013 | WO2013144275A1 Dynamic characterisation of amplifier using multiple envelope shaping functions |
| 10/03/2013 | US20130257545 Power amplifier including variable capacitor circuit |
| 10/03/2013 | US20130257537 Matched feedback amplifier with improved linearity |
| 10/03/2013 | US20130257532 Power conversion circuit and electronic device with power conversion circuit |
| 10/03/2013 | US20130257531 Amplifying device and method for controlling the same |
| 10/03/2013 | US20130257530 Pre-Distortion for a Radio Frequency Power Amplifier |
| 10/03/2013 | US20130257529 Circuitry for reducing power consumption |
| 10/03/2013 | US20130257528 System and method for controlling radio frequency transmissions from an electronic device |
| 10/02/2013 | EP2645565A1 A fully differential amplifier topology to drive dynamic speakers in class AB mode |
| 10/02/2013 | EP2645564A1 Electronic device with increased immunity to audio noise from system ground currents |
| 10/02/2013 | EP2643932A1 Digital predistortion of non-linear devices |
| 10/02/2013 | CN203225705U Input protective circuit |
| 10/02/2013 | CN103338293A Binaural recording device based on intelligent recording telephone, and recording method thereof |
| 10/02/2013 | CN103338014A Operational amplifier circuits |
| 10/02/2013 | CN103338013A Power tube grid electrode drive device of D-type audio power amplifier controlled by edge slope |
| 10/02/2013 | CN103338012A Current limiting power amplification driving circuit for power line carrier communication |
| 10/02/2013 | CN103338011A Low temperature drift trimming circuit for trimming offset voltage of amplifier |
| 10/02/2013 | CN103338010A Circuit for improving self-heating effect of power amplifier |
| 10/02/2013 | CN103338009A Circuit for improving power added efficiency of power amplifier |
| 10/02/2013 | CN102130655B Intersection moving-down circuit |
| 10/01/2013 | US8547174 Broadband linearizer with combined second and third order generation with adjustable tilt |
| 10/01/2013 | US8547171 System and method for controlling radio frequency transmissions from an electronic device |
| 10/01/2013 | US8546939 RF module including control IC without the aid of a relay pad |
| 10/01/2013 | CA2781700C Signal processing arrangement and signal processing method |
| 09/26/2013 | WO2013142529A2 Reconfigurable input power distribution doherty amplifier with improved efficiency |
| 09/26/2013 | WO2013140852A1 Reference-voltage circuit |
| 09/26/2013 | WO2013140740A1 Iv converter and inertial force sensor using iv converter |
| 09/26/2013 | WO2013140286A1 Bandpass sampling schemes for observation receiver for use in pa dpd system for concurrent multi-band signals |
| 09/26/2013 | US20130249636 Cancelation of gain change due to amplifier self-heating |
| 09/26/2013 | US20130249631 Memory structure having taps and non-unitary delays between taps |
| 09/26/2013 | US20130249629 Impedance adjustments in amplifiers |
| 09/26/2013 | US20130249628 Low noise cryogenic amplifier |
| 09/26/2013 | US20130249626 Multiple power mode amplifier |