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)
12/2003
12/02/2003US6657495 Operational amplifier output stage and method
12/02/2003US6657494 Variable gain mixer-amplifier with fixed DC operating voltage level
12/02/2003US6657493 Distortion compensation apparatus and distortion compensation method
12/02/2003US6657491 System and method for activating gain stages in an amplification module
12/02/2003US6657488 Offset correction and slicing level adjustment for amplifier circuits
12/02/2003US6657487 Photodetector preamplifier circuit having a rotating input stage
12/02/2003US6657486 MOS differential amplifier circuit having a wide linear input voltage range
12/02/2003US6657485 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor
12/02/2003US6657465 Rail-to-rail charge pump circuit
11/2003
11/27/2003WO2003098819A1 A transmitter
11/27/2003WO2003098797A1 Method and apparatus for error compensation in a hybrid matrix amplification system
11/27/2003WO2003098796A1 Power amplifier end stage
11/27/2003WO2003098795A1 Rf power amplifier
11/27/2003WO2002078179B1 Digital signal processor enhanced pulse width modulation amplifier
11/27/2003WO2002063761A3 Photodetector preamplifier circuit having a rotating input stage
11/27/2003WO2002060146A8 Method of implementing modulation and modulator
11/27/2003WO2002060050A3 Power amplifier system having frequency and amplifier failure compensation
11/27/2003US20030219260 Pseudo-differential transimpedance amplifier
11/27/2003US20030219135 Acoustic drive circuit
11/27/2003US20030219134 Audio control device
11/27/2003US20030219111 Integrated driver circuitry
11/27/2003US20030219069 Signal, interference and noise power measurement
11/27/2003US20030218817 Method of controlling reader amplifier gain variations of a HDD preamplifier, or the like
11/27/2003US20030218508 Transimpedance amplifier with selective DC compensation
11/27/2003US20030218507 Amplification device
11/27/2003US20030218506 Bias control circuit for power amplifier
11/27/2003US20030218505 Low noise gain-controlled amplifier
11/27/2003US20030218503 High gain amplifier with rail to rail range and frequency compensation
11/27/2003US20030218502 Variable gain amplifier
11/27/2003US20030218500 Power amplifier capable of switching gain while suppressing noise power in reception band
11/27/2003US20030218499 Polyphase impedance transformation amplifier
11/27/2003US20030218496 Very small current generating ciruit
11/27/2003US20030218482 Signal settling device and method
11/27/2003US20030218185 Semiconductor device, manufacturing thereof and power amplifier module
11/26/2003EP1365504A2 Low noise gain-controlled amplifier
11/26/2003EP1365503A2 Power amplifier capable of adjusting operating point
11/26/2003EP1365302A1 Low drop-out voltage regulator
11/26/2003EP1364468A2 Calibration of in-phase and quadrature transmit branches of a transmitter
11/26/2003EP1364460A1 Interface circuit for a differential signal
11/26/2003EP1364457A2 Circuit for linearizing electronic devices
11/26/2003EP1364456A2 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
11/26/2003EP1275205B1 Dual-mode communications transmitter
11/26/2003CN1459145A Circuit and method for controlling dynamic, bi-directional high voltage analog switch and ultrasound examination apparatus equipped with such a circuit
11/26/2003CN1459144A Circuit and method for input side impedance matching of power amplifier in electronic device
11/25/2003US6654604 Equipment for communication system
11/25/2003US6654591 Low distortion signal amplifier system and method
11/25/2003US6654462 Line terminal circuit for controlling the common mode voltage level on a transmission line
11/25/2003US6654192 High frequency track and hold full-wave rectifier
11/25/2003US6653909 Digital signals, radio transmitter circuits and method
11/25/2003US6653905 Amplifier for FM antennas
11/25/2003US6653904 Electrically tuned integrated amplifier for wireless communications
11/25/2003US6653903 Supply voltage decoupling device for HF amplifier circuits
11/25/2003US6653902 Amplifier power control circuit
11/25/2003US6653901 System and method for a startup circuit for a differential CMOS amplifier
11/25/2003US6653900 Driving method and related apparatus for improving power efficiency of an operational transconductance amplifier
11/25/2003US6653899 Audio amplifier power and temperature controller having network detecting and associated methods
11/25/2003US6653897 Power amplifier apparatus
11/25/2003US6653896 Differential rf/microwave power amplifier using independent synchronized polar modulators
11/25/2003US6653895 Gain-boost nulling amplifier for auto-zero circuit
11/25/2003US6653894 Integrated current mirror in output stage of operational amplifier
11/25/2003US6653893 Voltage margin testing of a transmission line analog signal using a variable offset comparator in a data receiver circuit
11/25/2003US6653892 Squelch circuit to create a squelch waveform for USB 2.0
11/20/2003WO2003096527A1 Power amplification device
11/20/2003WO2003096525A2 Polyphase impedance transformation amplifier
11/20/2003WO2003096032A2 Current source evaluation sense-amplifier
11/20/2003WO2003034387A3 Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator
11/20/2003WO2003032680A3 Transponder with a changeable circuit configuration
11/20/2003WO2003021638A3 High voltage integrated circuit amplifier
11/20/2003US20030214423 Circuit and method for DC offset calibration and signal processing apparatus using the same
11/20/2003US20030214359 Power amplifying apparatus and radio communications apparatus using same
11/20/2003US20030214358 Multistage amplifier circuit capable of boosting output power
11/20/2003US20030214356 Amplifier and radio frequency tuner
11/20/2003US20030214355 Method and apparatus for error compensation in a hybrid matrix amplification system
11/20/2003US20030214353 Transimpedance amplifier
11/20/2003US20030214352 Power amplifier capable of adjusting operating point
11/20/2003US20030214351 Non-switched capacitor offset voltage compensation in operational amplifiers
11/20/2003US20030214328 Semiconductor device having input buffers to which internally-generated reference voltages are applied
11/20/2003US20030214275 Low drop-out regulator having current feedback amplifier and composite feedback loop
11/20/2003US20030213925 Activity detector circuit
11/20/2003US20030213618 Output stage layout for minimum cross coupling between channels
11/20/2003DE10212291C1 Unterwasserantenne Underwater antenna
11/19/2003EP1363401A1 Input buffers with common internal reference voltage
11/19/2003EP1363394A1 Switching power amplifier, and switching control method of the switching power amplifier
11/19/2003EP1362416A2 Variable bias control for switch mode rf amplifier
11/19/2003EP1362415A2 Power control of switched-mode power amplifiers with one or more stages
11/19/2003CN1457555A Calibration of in-phase and quadrature transmit branches of transmitter
11/19/2003CN1457548A Interface circuit for differential signal
11/19/2003CN1457146A AB amplifier for controlling static current
11/19/2003CN1457144A Transient-inhibiting audio-frequency circuit and method
11/19/2003CN1128499C Integral three-channel audio signal amplifier
11/18/2003US6650876 Methods and arrangement relating to a radio communication network
11/18/2003US6650614 Optical disk pickup using current mode signal exchanges and systems and methods using the same
11/18/2003US6650605 Apparatus for scanning optical recording media
11/18/2003US6650185 Frequency selective distributed amplifier
11/18/2003US6650184 High gain amplifier circuits and their applications
11/18/2003US6650182 Exponential transconductance amplifier
11/18/2003US6650181 High-frequency amplifier
11/18/2003US6650180 Totem pole rf amplifiers with phase and amplitude correction
11/18/2003US6650137 Circuit for monitoring an open collector output circuit with a significant offset
11/18/2003US6649900 Photoreceiver assembly for high-powered lasers
1 ... 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 ... 441