H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements

Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
11/2013
11/27/2013	EP2667506A1 Two-stage operational amplifier in class ab
11/27/2013	EP2667500A1 Amplifier circuit and method for operating an amplifier circuit
11/27/2013	CN203313139U Calibrating circuit for calibrating fixed gain amplifier
11/27/2013	CN203313138U Current operational circuit
11/27/2013	CN203313137U Audio-frequency amplifying circuit with filtering function
11/27/2013	CN203313136U 芯片 Chip
11/27/2013	CN203313135U Current-limiting power amplification driving circuit in power line carrier communication
11/27/2013	CN203313134U Radio frequency power amplifier applied to 433MHz frequency band
11/27/2013	CN203313133U Power amplifier
11/27/2013	CN203313132U Anti-jamming infrared amplifier
11/27/2013	CN203313131U High-sensitivity infrared amplifier
11/27/2013	CN203313130U Sensitive infrared amplifying circuit
11/27/2013	CN203313129U Anti-jamming infrared amplifying circuit
11/27/2013	CN203313128U Novel infrared amplifying circuit
11/27/2013	CN103415993A 增强型多尔蒂放大器 Enhanced Doherty Amplifier
11/27/2013	CN103414442A High-precision fully differential amplifier based on chopper technology
11/27/2013	CN103414441A Open loop amplifier with stable output common-mode voltage
11/27/2013	CN103414440A Signal amplification circuit with time-varying gain
11/27/2013	CN103414439A Full differential power current amplifier provided with noise cancellation circuits
11/27/2013	CN103414438A Error amplifier circuit
11/27/2013	CN103414437A AB/inverse F type multi-mode power amplifier based on gallium nitride transistor with high electro mobility
11/27/2013	CN103414435A Predistortion linearization device of millimeter wave power amplifier
11/27/2013	CN102075154B Low-power consumption programmable gain amplifier device
11/26/2013	US8594346 Audio output drivers for piezo speakers
11/26/2013	US8593226 Transimpedance amplifier
11/26/2013	US8593225 Hybrid class amplifier
11/26/2013	US8593224 Regulator and temperature compensation bias circuit for linearized power amplifier
11/26/2013	US8593222 Amplifier
11/26/2013	US8593221 Methods and circuits for common mode stability and bandwidth broadening in transistor amplifiers
11/26/2013	US8593220 Power MOSFETs with improved efficiency for multi-channel class D audio amplifiers and packaging therefor
11/26/2013	US8593219 Method and apparatus for amplifying a radio frequency signal
11/26/2013	US8593218 Fast settling low power low noise amplifier
11/26/2013	US8592742 Circuit and method for controlling current supplied to an optical sensor
11/21/2013	WO2013173771A1 Integrated start-up bias boost for dynamic error vector magnitude enhancement
11/21/2013	WO2013171819A1 Depp type amplifier circuit
11/21/2013	WO2013093616A3 Output stage for wireless transmitter
11/21/2013	US20130310114 Amplifier and mobile communication device
11/21/2013	US20130309985 Transmission module
11/21/2013	US20130308893 Integrated driver and related method
11/21/2013	US20130307635 Integrated directional coupler within an rf matching network
11/21/2013	US20130307629 Power amplification circuit
11/21/2013	US20130307628 Radio Frequency Power Amplifier and Packaging and Fabrication Method Thereof
11/21/2013	US20130307627 Integrated start-up bias boost for dynamic error vector magnitude enhancement
11/21/2013	US20130307626 Silicon-on-Insulator High Power Amplifiers
11/21/2013	US20130307623 Amplifier Circuits with Reduced Power Consumption
11/21/2013	US20130307622 Differential amplifier circuit having plural current mirror circuits
11/21/2013	US20130307621 Vramp limiting using resistors
11/21/2013	US20130307620 Signal amplifying circuit with reduced output signal noise by introducing coupling effect and related method thereof
11/21/2013	US20130307619 Traveling wave amplifier with suppressed jitter
11/21/2013	DE102013209056A1 Verstärker und mobilkommunikationsvorrichtung Amplifiers and mobile communication device
11/21/2013	DE102013208757A1 Gleichspannungswandler zur einhüllendenverfolgung DC voltage converter for einhüllendenverfolgung
11/20/2013	EP2665181A1 Amplifier circuit
11/20/2013	EP2664060A1 Systems and methods for a radio frequency transmitter with improved linearity and power out utilizing pre-distortion and a gan (gallium nitride) power amplifier device
11/20/2013	EP2244381B1 Class AB amplifier systems
11/20/2013	EP2244378B1 Amplifying circuit, AC signal amplifying circuit and input bias adjusting method
11/20/2013	EP2244377B1 Amplifying circuit and amplifying method
11/20/2013	EP2145386B1 Multiport amplifiers in communications satellites
11/20/2013	EP2138815B1 Photometric device
11/20/2013	EP2133998B1 Digital-analogue converter for pulse density modulated digital signals
11/20/2013	EP1885059B1 Electron beam facility for processing material and current adding device for rapid actuation of inductivity and image creation device for an electron beam facility for processing material
11/20/2013	CN203301436U Variable impedor of passive coupling circuit, and radio frequency power amplifier
11/20/2013	CN203301430U CMOS amplifier capable of reinforcing sink current and driving capacitive load
11/20/2013	CN203301429U Current amplifier applied to plane power supply
11/20/2013	CN203301428U Infrared amplifier with filter function
11/20/2013	CN203301427U Infrared amplifier
11/20/2013	CN203301423U Bio-electricity signal amplifier
11/20/2013	CN103404025A Amplifier module
11/20/2013	CN103403958A LCL high power combiner
11/20/2013	CN103402167A Network type digital power amplifier
11/20/2013	CN103401518A Digital power amplifier unit of passenger compartment
11/20/2013	CN103401517A Radio frequency power amplifier system
11/20/2013	CN103401516A Radio frequency protector
11/20/2013	CN103401515A Feedforward power amplifier for self-adaptive frequency compensation
11/20/2013	CN103401511A Power amplifier pre-distortion method used for real-time system
11/20/2013	CN103401508A Fusion structure of LNA (low noise amplifier) and frequency mixer
11/20/2013	CN102084589B Method of achieving high selectivity in receiver RF front-ends
11/19/2013	US8588712 Modulation method and apparatus
11/19/2013	US8587381 Even order distortion cancellation in single-ended input, differential output amplifiers using feed-back
11/19/2013	US8587380 Saturation protection of a regulated voltage
11/19/2013	US8587379 Power amplifier with stabilising network
11/19/2013	US8587376 Automatic gain control
11/19/2013	US8587375 Power amplifier linearization method and apparatus
11/19/2013	US8586905 Semiconductor device and driving method thereof
11/14/2013	WO2013169777A1 Programmable-gain amplifier
11/14/2013	WO2013168598A1 Power source device for high-frequency electric power amplifying circuit, and high-frequency electric power amplifying device
11/14/2013	US20130301854 Audio amplifier
11/14/2013	US20130300508 Amplifier circuit and method of amplifying a signal in an amplifier circuit
11/14/2013	US20130300507 Power amplifier with feedback impedance for stable output
11/14/2013	US20130300506 Accurate bias tracking for process variation and supply modulation
11/14/2013	US20130300505 Rf power amplifier
11/14/2013	US20130300504 Bias control for push-pull amplifier arrangement
11/14/2013	US20130300502 Variable-gain low noise amplifier
11/14/2013	US20130300501 Bandwidth extension of an amplifier
11/14/2013	US20130300500 Method and apparatus for filter-less class d audio amplifier emi reduction
11/14/2013	US20130300499 Programmable wide-band radio frequency feed network
11/14/2013	US20130300498 Methods, systems, and computer program products for low power multimode interconnect for lossy and tightly coupled multi-channel
11/14/2013	US20130300486 Reduced delay level shifter
11/13/2013	EP2662979A1 High-linearity low-noise receiver with load switching
11/13/2013	EP2661813A1 Loop filter buffer with level shifter
11/13/2013	CN203289386U Collected signals amplification module in transformer substation air-conditioner intelligent control system

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