| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/08/2006 | EP1624564A1 Controllable power operational transconductance amplifier |
| 02/08/2006 | EP1623501A1 Systems and methods for providing multi channel pulse width modulated audio with staggered outputs |
| 02/08/2006 | EP1623500A2 Digital switching power amplifier |
| 02/08/2006 | CN1732620A Power amplifier circuit and method using bandlimited signal component estimates |
| 02/08/2006 | CN1732619A Circuit for adjusting the operating point of multiple gate field effect transistors |
| 02/08/2006 | CN1732568A RF power transistor with internal bias feed |
| 02/08/2006 | CN1731675A Differential amplifier, and data driver of display device using the same |
| 02/08/2006 | CN1731674A High-frequency amplifier |
| 02/08/2006 | CN1731673A Method for realizing memory-type power amplifier linearization and its baseband predistortion device |
| 02/08/2006 | CN1241324C Feed forward amplifier and feed forward amplifying method |
| 02/08/2006 | CN1241323C Differential sampler structure of reducing distortion and current requirement |
| 02/08/2006 | CN1241322C Frequency conversion circuit |
| 02/07/2006 | US6995737 Method and system for adjusting precharge for consistent exposure voltage |
| 02/07/2006 | US6995627 Transmitter equalization method and apparatus |
| 02/07/2006 | US6995616 Power amplifier having cascode architecture with separately controlled MOS transistor and parasitic bipolar transistor |
| 02/07/2006 | US6995615 Current-mode preamplifiers |
| 02/07/2006 | US6995613 Power distribution and biasing in RF switch-mode power amplifiers |
| 02/07/2006 | US6995612 Circuit for reducing current mirror mismatch due to gate leakage current |
| 02/07/2006 | US6995611 Inductive amplifier with a feed forward boost |
| 02/07/2006 | US6995610 Amplifier and radio frequency tuner |
| 02/07/2006 | US6995609 Switching circuit and digital power amplifier |
| 02/02/2006 | US20060023518 Semiconductor apparatus having logic level decision circuit and inter-semiconductor apparatus signal transmission system |
| 02/02/2006 | US20060023095 Flexy-power amplifier: a new amplifier with built-in power management |
| 02/02/2006 | US20060022756 Power amplifier arrangement and method for processing a radiofrequency signal |
| 02/02/2006 | US20060022755 Nagative conductance power amplifier |
| 02/02/2006 | US20060022754 Buffer circuit |
| 02/02/2006 | US20060022753 Method and apparatus for controlling common-mode output voltage in fully differential amplifiers |
| 02/02/2006 | US20060022752 Power amplifier apparatus and DC component removing method |
| 02/02/2006 | US20060022750 High frequency amplifier |
| 02/02/2006 | US20060022749 Method of preventing abrupt voltage changes at the outputs of a pair of amplifiers and control circuit for a pair of amplifiers self-configuring in a bridge configuration |
| 02/02/2006 | US20060022748 Variable gain amplifier circuit and radio machine |
| 02/02/2006 | US20060022747 Estimating the operating point on a non-linear traveling wave tube amplifier |
| 02/02/2006 | US20060022718 Differential output circuit for improving bandwidth |
| 02/02/2006 | DE10044416B4 Switching mode power converter has controller for motor speed control coupled to pair of switches, which activates each of the switches during respective switching cycles |
| 02/01/2006 | EP1622261A2 Source follower amplifier device and camera using same |
| 02/01/2006 | EP1622260A2 Differential amplifier circuit and mixer circuit having improved linearity |
| 02/01/2006 | EP1622259A1 Source follower amplifier device and camera using the same |
| 02/01/2006 | EP1622258A2 Power amplifier apparatus and dc component removing method |
| 02/01/2006 | EP1622257A1 Amplifier for converting a current signal of an optical receiving element into a voltage signal |
| 02/01/2006 | EP1622166A1 Integrating and sampling amplifier for pulse length matched filter |
| 02/01/2006 | EP1620943A1 N-way rf power amplifier circuit with increased back-off capability and power added efficiency using selected phase lengths and output impedances |
| 02/01/2006 | EP1620942A2 Rf amplifier employing active load linearization |
| 02/01/2006 | EP1620325A2 N-way rf power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division |
| 02/01/2006 | EP1579573A4 Apparatus and method for safely handling asynchronous shutdown of pulsewidth modulated output |
| 02/01/2006 | CN1729637A A transmitter and a method of calibrating power in signals output from a transmitter |
| 02/01/2006 | CN1729619A Phase corrected miller compensation of chopper and nested chopper amplifiers |
| 02/01/2006 | CN1729618A Power amplifier for bias control |
| 02/01/2006 | CN1729617A Transmitter stage |
| 02/01/2006 | CN1729518A Arrangement for reading an information carrier |
| 02/01/2006 | CN1728573A Radio communicator |
| 02/01/2006 | CN1728545A Feedback comparison type digital power amplifier |
| 02/01/2006 | CN1728544A BiCMOS logarithmic amplifier |
| 02/01/2006 | CN1728543A Injection circuit with external predistortion |
| 02/01/2006 | CN1240183C Clip circuit and toothed wave generator comprising same |
| 02/01/2006 | CN1240182C Demodulator for digital audio-frequency amplifier |
| 02/01/2006 | CN1239971C Output circuit for density grade control, its detector and detection method |
| 01/31/2006 | US6993438 System and method for measuring essential power amplification functions |
| 01/31/2006 | US6993302 Class-L power-output amplifier |
| 01/31/2006 | US6993286 Dual band bidirectional amplifier for wireless communication |
| 01/31/2006 | US6993090 Distortion compensation apparatus and distortion compensation method |
| 01/31/2006 | US6993087 Switching mode power amplifier using PWM and PPM for bandpass signals |
| 01/31/2006 | US6993086 High performance short-wave broadcasting transmitter optimized for digital broadcasting |
| 01/31/2006 | US6992610 PWM signal generator and PWM signal generating method |
| 01/31/2006 | US6992543 Mems-tuned high power, high efficiency, wide bandwidth power amplifier |
| 01/31/2006 | US6992530 RF amplifier with improved impedance matching |
| 01/31/2006 | US6992529 Apparatus, methods and articles of manufacture for a dual mode amplifier |
| 01/31/2006 | US6992528 Semiconductor device |
| 01/31/2006 | US6992527 Digital power amplifier |
| 01/31/2006 | US6992525 Arrangement in a pulse amplifier |
| 01/31/2006 | US6992511 Output buffer circuit |
| 01/31/2006 | US6992509 Switched-capacitor sample/hold having reduced amplifier slew-rate and settling time requirements |
| 01/31/2006 | CA2427379C Wideband dual amplifier circuits |
| 01/26/2006 | WO2006009651A2 Improved integrated circuit implementation for power and area efficient adaptive equalization |
| 01/26/2006 | WO2005086680A3 Current mode output stage circuit with open loop dc offset reduction |
| 01/26/2006 | WO2005015753A3 Improved radio frequency digital-to-analog converter |
| 01/26/2006 | US20060019621 Radio frequency circuit and communication system with power amplifier control |
| 01/26/2006 | US20060018669 Optical receiver with dynamic gain and bandwidth |
| 01/26/2006 | US20060017828 Charge recycling amplifier for a high dynamic range CMOS imager |
| 01/26/2006 | US20060017538 Distributed active transformer power control techiques |
| 01/26/2006 | US20060017506 Programmable low noise amplifier and method |
| 01/26/2006 | US20060017505 Current source circuit and differential amplifier |
| 01/26/2006 | US20060017504 Clamping circuit for operational amplifiers |
| 01/26/2006 | US20060017503 Method and apparatus for a fully differential amplifier output stage |
| 01/26/2006 | US20060017502 Differential amplifier for dual bridge transducer |
| 01/26/2006 | US20060017500 Composite power amplifier |
| 01/26/2006 | US20060017499 Subtractor circuit and power detector arrangement having that subtractor circuit |
| 01/26/2006 | US20060016963 Medical sensors |
| 01/26/2006 | US20060016894 Optical receiver |
| 01/26/2006 | DE19938907B4 Schaltung und Verfahren zum Verringern von Schaltstörungen Circuit and method for reducing switching noise |
| 01/26/2006 | DE102004031687A1 Leistungsverstärkeranordnung und Verfahren zum Verarbeiten eines Hochfrequenzsignals Power amplifier arrangement and method for processing a high-frequency signal |
| 01/25/2006 | EP1619792A1 Preamplifier |
| 01/25/2006 | EP1619515A2 Apparatus and method for compensation of errors in a reference voltage |
| 01/25/2006 | EP1618694A2 Distributed gain network |
| 01/25/2006 | EP1618653A1 Radio frequency limiter circuit |
| 01/25/2006 | EP1618652A2 Large gain-bandwith amplifier |
| 01/25/2006 | EP1618651A2 Amplifier apparatus, method, and system |
| 01/25/2006 | EP1510000B1 Operational amplifier with independent input offset trim for high and low common mode input voltages |
| 01/25/2006 | EP1407586B1 Line driver for digital signal transmission |
| 01/25/2006 | EP1374392B1 Amplifying circuit |
| 01/25/2006 | CN2754272Y Predistortion circuit |