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
11/29/2007US20070273448 Output power control of an rf amplifier
11/29/2007US20070273447 Bias circuit for power amplifier having a low degradation in distortion characteristics
11/29/2007US20070273444 Techniques for enabling a 10BT active output impedance line driver using a low power supply
11/29/2007US20070273443 Operational amplifier circuit
11/29/2007US20070273442 High-efficiency class-AB amplifier
11/29/2007US20070273441 Amplifier
11/29/2007US20070273440 Digital Amplifier
11/29/2007US20070273438 Mode selection amplifier circuit usable in a signal acquisition probe
11/29/2007US20070273437 Driving device
11/29/2007US20070273436 Pwm modulator and class-d amplifier having the same
11/29/2007US20070273435 Am Intermediate Frequency Variable Gain Amplifier Circuit, Variable Gain Amplifier Circuits and its Semiconductor Integrated Circuit
11/29/2007US20070273411 Amplifier with pulse coded output and remote signal reconstruction from the pulse output
11/29/2007US20070273354 Control Circuit For Diode Based Rf Circuits
11/29/2007DE102006046288B3 Amplifier device for supplying electricity to high frequency transmitting coil, has switching components controllable by control device, for selectively connecting supply input with ground voltage and each intermediate voltage
11/28/2007EP1860772A2 Automatic input-gain control circuit and method thereof
11/28/2007EP1860771A2 Differential circuit, amplifier circuit; driver circuit and display device using those circuits
11/28/2007EP1859530A1 Receiver having a gain-controllable input amplifier.
11/28/2007EP1859381A2 Electrical power multiplication
11/28/2007EP1522142B1 Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit
11/28/2007EP1332551B1 Amplifier linearisation
11/28/2007CN101079650A Image forming device and image forming method
11/28/2007CN101079602A Automatic input-gain control circuit and method thereof
11/28/2007CN101079599A An implementation method and device for quickly responding to switch power amplification
11/28/2007CN101079598A High-frequency power amplifier and communication device
11/28/2007CN101079597A RF transmitter and its driver amplification circuit
11/28/2007CN101079595A Apparatus and method of dynamically adapting the lut spacing for linearizing a power amplifier
11/28/2007CN100351845C Amplifier modulation
11/27/2007US7302246 Programmable gain amplifier with self-adjusting offset correction
11/27/2007US7301459 Closed loop transmitter control for power amplifier in an EAS system
11/27/2007US7301417 Pulse width modulation method and apparatus
11/27/2007US7301403 Low noise amplifier with switch gain control
11/27/2007US7301401 Low noise op amp
11/27/2007US7301400 Multi-phase switching power supply for mobile telephone applications
11/27/2007US7301399 Class AB CMOS output circuit equipped with CMOS circuit operating by predetermined operating current
11/27/2007US7301398 High linearity differential transconductance amplifier
11/27/2007US7301396 System and method for distortion cancellation in amplifiers
11/27/2007US7301395 Doherty amplifier
11/27/2007US7301393 Low distortion class-D amplifier using carrier reference signal symmetry modulation
11/27/2007US7301391 Filtering variable offset amplifier
11/27/2007US7301373 Asymmetric precharged flip flop
11/27/2007US7301353 Sensor element for providing a sensor signal, and method for operating a sensor element
11/27/2007US7301315 Power supplying method and apparatus including buffer circuit to control operation of output driver
11/22/2007WO2007133416A1 Dual op amp ic with single low noise op amp configuration
11/22/2007WO2007132297A1 Amplifier circuit and integrated circuit therefor
11/22/2007WO2007132274A2 High frequency low noise amplifier
11/22/2007WO2006124691A3 Low power glare sensor
11/22/2007US20070268074 Dynamically Biased Amplifier
11/22/2007US20070268073 Electronic device
11/22/2007US20070268071 High efficiency switch-mode power amplifier
11/22/2007US20070268070 Power amplifier using transmission line transformer
11/22/2007US20070268069 Apparatus and method for controlling temperature of electronic apparatus
11/22/2007DE102006023710A1 Klasse-AB-Verstärkerschaltung mit kombinierter Ruhestrom- und Gleichtaktregelung Class AB amplifier circuit with combined quiescent and common-mode control
11/21/2007EP1858160A1 Amplifier arrangement
11/21/2007EP1858159A1 Apparatus and method for performing a calculation operation
11/21/2007EP1858158A1 Strain compensation device
11/21/2007EP1857907A1 Semiconductor device
11/21/2007EP1856798A1 Measurement circuit and method for measuring the level of an rf signal, and a transmitter including a measurement circuit
11/21/2007EP1451926B1 Power amplifier control
11/21/2007EP1310042B1 Noise and input impedance matched amplifier
11/21/2007CN101076281A Apparatus and method for reducing interference
11/21/2007CN101073493A DC digital amplifier for recording human body and non-human body microsignal
11/21/2007CN100350741C Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals
11/21/2007CN100350740C Voltage level translation circuits
11/21/2007CN100350739C 电路 Circuit
11/21/2007CN100350738C AB amplifier for controlling static current
11/20/2007US7299015 Transmission output control circuit, and wireless device using the same
11/20/2007US7298855 Volume circuit using resistive ladder circuits
11/20/2007US7298215 Amplifying circuit
11/20/2007US7298214 Amplifying circuit with variable supply voltage
11/20/2007US7298211 Power amplifying apparatus
11/20/2007US7298210 Fast settling, low noise, low offset operational amplifier and method
11/20/2007US7298207 Automatic gain control for a multi-stage gain system
11/20/2007US7298206 Multi-band amplifier for test and measurement instruments
11/20/2007US7298205 Amplifier and frequency converter
11/20/2007US7298204 Method and apparatus for outputting audio signal
11/20/2007US7298180 Latch type sense amplifier
11/20/2007US7297922 Optical receiver protection circuit
11/20/2007US7297921 Photodetection circuit and confocal microscope that has it
11/15/2007WO2007129118A1 Rf power amplifiers
11/15/2007WO2002091565A3 Signal amplifying method, signal amplifier and devices related therewith
11/15/2007US20070262820 Amplifier thermal management
11/15/2007US20070262815 Electronic signal generator with modulated cyclic ratio, compensated for variations in its power supply voltage
11/15/2007US20070262795 Current source circuit and design methodology
11/15/2007US20070262243 Optical navigation system and method for reducing the power consumption of the system
11/15/2007US20070262242 Method of optimization of measurement time for optical mouse sensor
11/15/2007DE102006020485A1 Operationsverstärker Operational amplifier
11/15/2007CA2744952A1 Multipoint touch surface controller
11/15/2007CA2744845A1 Multipoint touch surface controller
11/14/2007EP1854209A2 Method and apparatus for an improved power amplifier
11/14/2007EP1854208A2 Method and apparatus for an improved power amplifier
11/14/2007EP1364458B1 Protection circuit for extending headroom with off-chip inductors
11/14/2007CN200976571Y Message amplifier driving by single power supply
11/14/2007CN200976570Y High-frequency power amplifier circuit
11/14/2007CN200976568Y Power amplifier circuit
11/14/2007CN101073201A Coupling net and mmic amplifier
11/14/2007CN101072014A 运算放大器 Operational Amplifier
11/14/2007CN101072013A Linear amplifier and its high power pulse power source
11/14/2007CN101071983A Method to reduce inrush voltage and current in a switching power converter
11/14/2007CN100349389C Communication signal bidirection amplifier
11/13/2007US7295828 Differential signal comparator
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