Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › 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)
11/2007
11/13/2007US7295820 Method and apparatus for DC offset control
11/13/2007US7295675 Phantom powered capacitor microphone and a method of using a vacuum tube in the same
11/13/2007US7295605 Adaptive equalizer with DC offset compensation
11/13/2007US7295236 Circuit for processing a time-discrete analog signal and image sensor
11/13/2007US7295075 OFDM amplifier and method therefor
11/13/2007US7295074 Doherty power amplifier with phase compensation
11/13/2007US7295072 Amplifier circuit
11/13/2007US7295071 High speed, high DC gain and wide dynamic range amplifier
11/13/2007US7295070 Flip around switched capacitor amplifier
11/13/2007US7295069 Differential amplifier circuit capable of reducing current consumption
11/13/2007US7295068 Increasing the linearity of a transconductance cell
11/13/2007US7295067 Current source circuit and differential amplifier
11/13/2007US7295065 High efficiency doherty amplifier with a segmented main amplifier
11/13/2007US7295064 Doherty amplifier
11/13/2007US7295063 Class D amplifier
11/13/2007US7295062 Pulse modulated power converter
11/13/2007US7295043 Differential output circuit for improving bandwidth
11/08/2007WO2007127995A2 Current source circuit and design methodology
11/08/2007WO2007127777A2 Circuit and method for driving bulk capacitance of amplifier input transistors
11/08/2007WO2007126573A2 Frequency limiting amplifier in a fsk receiver
11/08/2007WO2007125895A1 Amplification circuit
11/08/2007WO2007125873A1 Infrared sensor
11/08/2007WO2007125496A2 Power control of a power amplifier using pulse width modulation of input signal
11/08/2007WO2007125469A1 Power amplifier.
11/08/2007WO2007124895A1 Operational amplifier
11/08/2007US20070259631 Radio Transmitter and a Method of Operating a Radio Transmitter
11/08/2007US20070257942 Display apparatus and driving device for displaying
11/08/2007US20070257762 Riaa correction of audio signal with use of transformer
11/08/2007US20070257734 Balanced output circuit and electronic apparatus utilising the same
11/08/2007US20070257733 Amplifier system with current-mode servo feedback
11/08/2007US20070257732 Circuits and methods for amplifying signals
11/08/2007DE102006019887A1 Multifunctional radio frequency circuit for use in radar system for e.g. automobile application, has two inductors and capacitor connected in series between output of amplifier branch and output of another amplifier branch
11/08/2007DE102004033608B4 Verstärker mit variabler Verstärkung zur linearen Verstärkung in Dezibel Variable gain amplifier to the linear gain in decibels
11/07/2007EP1853086A1 A/v amplifier and method for driving the same
11/07/2007EP1852972A1 Single-ended to differential buffer amplifier
11/07/2007EP1851855A1 Receiver comprising an amplifier
11/07/2007EP1851854A1 Receiver comprising an amplifier
11/07/2007EP1673858A4 Stacked rf power amplifier
11/07/2007EP1625656B1 Circuit for improved differential amplifier and other applications
11/07/2007EP1476912B1 Switchable combiner and integrated combining apparatus for using it
11/07/2007CN200973159Y Prealarm high speed intelligent ball device with directional monitoring function
11/07/2007CN200973071Y Audio power amplifier circuit
11/07/2007CN200973070Y Anti-interference high sensitivity high articulation audio detector
11/07/2007CN200973069Y Feed forward power amplifier circuit and pick-up device of its adjacent power
11/07/2007CN101069343A Current-voltage conversion circuit, and power consumption detection circuit and electronic equipment using the same
11/07/2007CN101068106A Regulated cascode circuit, an amplifier including the same, and method of regulating a cascode circuit
11/07/2007CN101068105A Amplifier unit and method of detecting failure in the same
11/07/2007CN100347952C Amplitude modulation o phase modulation cancellation method in an RF amplifier
11/07/2007CN100347951C 放大器电路 Amplifier circuit
11/06/2007US7292105 Power control and modulation of switched-mode power amplifiers with one or more stages
11/06/2007US7292102 Gain control scheme independent of process, voltage and temperature
11/06/2007US7292101 Digitally adjustable variable gain amplifier (VGA) using switchable differential pairs
11/06/2007US7292100 Interpolated variable gain amplifier with multiple active feedback cells
11/06/2007US7292099 Amplifier arrangement and method for operation of an amplifier arrangement
11/06/2007US7292098 Operational amplifier
11/06/2007US7292014 Controller and loading system thereof
11/01/2007WO2007124362A2 Gate leakage insensitive current mirror circuit
11/01/2007WO2007123792A2 Switching power amplifier
11/01/2007WO2007123449A1 Output networks in combination with linc technique
11/01/2007WO2007123040A1 Power amplifier
11/01/2007WO2007121585A1 Cmos temperature compensated transmitter circuit with merged mixer and variable gain amplifier
11/01/2007WO2007100697A3 Class-e radio frequency power amplifier with feedback control
11/01/2007WO2007004673A1 Fet bias circuit
11/01/2007US20070252652 Dual op amp IC with single low noise op amp configuration
11/01/2007US20070252651 Power Amplifier With A Output Matching Network
11/01/2007US20070252650 Semiconductor amplifier
11/01/2007US20070252649 Amplifier
11/01/2007US20070252648 Operational amplifier
11/01/2007US20070252647 Operational amplifier
11/01/2007US20070252646 Adaptive Bias Current Circuit and Method for Amplifiers
11/01/2007US20070252645 Amplifier circuit of BTL system
11/01/2007US20070252644 Audio Power Amplifier Ic and Audio System Provided with the Same
11/01/2007US20070252643 Transistor devices configured to operate above a first cutoff frequency
11/01/2007US20070252642 Active load
11/01/2007CA2648289A1 Output networks in combination with linc technique
10/2007
10/31/2007EP1850477A2 Operational amplifier
10/31/2007EP1850476A1 Differential amplifier circuit
10/31/2007EP1850475A1 Antenna device and portable radio communication device comprising such antenna device
10/31/2007EP1850472A1 High-frequency circuit
10/31/2007EP1849232A1 Broadband microwave amplifier
10/31/2007EP1468487B1 A high performance bifet low noise amplifier
10/31/2007EP1252633B1 A switched-opamp technique for low-voltage switched-capacitor circuits
10/31/2007CN200969567Y Amplifying circuit for sampling circuit of motor control
10/31/2007CN200969566Y Surface photovoltaic spectrum pre-amplifier
10/31/2007CN200969090Y Computer horn playing system
10/31/2007CN200968938Y Electrical source of electron gun for reflected high energy electron diffraction instrument
10/31/2007CN101064521A High-frequency circuit, high-frequency device and communications apparatus
10/31/2007CN101064497A Complementary metal oxide semiconductor cascade high-gain current-to-voltage converter
10/31/2007CN101064496A Semiconductor device
10/30/2007US7288996 Apparatus and method reducing non-linearity in an output signal of an amplifier device
10/30/2007US7288995 Power amplifier of a transmitter
10/30/2007US7288994 Differential to single-ended converter
10/30/2007US7288993 Small signal amplifier with large signal output boost stage
10/30/2007US7288992 Bias circuit for a bipolar transistor
10/30/2007US7288990 Reference buffer with dynamic current control
10/30/2007US7288989 Low-noise amplifier with a transformer
10/30/2007US7288987 RF amplifier employing active load linearization
10/25/2007WO2007121112A2 Systems, methods and devices for dual closed loop modulation controller for nonlinear rf amplifier
10/25/2007WO2007119266A1 High frequency/high output amplifier
10/25/2007WO2003058656A3 High power variable slide rf tuner
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