| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/11/2003 | US6518817 Voltage buffer |
| 02/06/2003 | WO2003010886A1 Amplification circuit |
| 02/06/2003 | WO2003010885A1 Improved linear power amplifier |
| 02/06/2003 | WO2003010884A1 Multistage amplifier and integrated circuit |
| 02/06/2003 | WO2003010883A1 Multistage amplifier and integrated circuit |
| 02/06/2003 | WO2003010882A2 Electronic circuit comprising an amplifier for amplifying a binary signal |
| 02/06/2003 | WO2003010616A1 Mos integrated circuit with current mirror |
| 02/06/2003 | WO2002087462A9 Integrated low-corner frequency high pass filter circuit |
| 02/06/2003 | WO2002087073A3 An improved dc offset self-calibration system for a digital switching amplifier |
| 02/06/2003 | US20030027539 Directional coupler, high frequency circuit module and wireless communication system |
| 02/06/2003 | US20030025562 Low-power, differential optical receiver in silicon on insulator |
| 02/06/2003 | US20030025561 Load switching for transmissions with different peak-to-average power ratios |
| 02/06/2003 | US20030025560 High output amplifier for stable operation |
| 02/06/2003 | US20030025559 Differential mode circuitry and method of calibrating same without matched external current sources |
| 02/06/2003 | US20030025558 Class AB operational amplifier having high gain and low settling time |
| 02/06/2003 | US20030025557 Linear transconductance amplifier |
| 02/06/2003 | US20030025556 Differential amplifier providing precisely balanced output signals and having low power consumption |
| 02/06/2003 | US20030025555 Radio frequency power amplifier |
| 02/06/2003 | US20030025554 Headphone amplifier |
| 02/06/2003 | US20030025536 Voltage follower and related method of regulation |
| 02/06/2003 | US20030025533 Multi-input differential circuit |
| 02/05/2003 | EP1232643A4 A low insertion loss current sense circuit |
| 02/05/2003 | EP0680674B1 A method for adjusting transmission power, and a base station |
| 02/05/2003 | CN2534732Y Inverted Darlington audio frequency amplifier with stable bias current |
| 02/05/2003 | CN1395441A Reducing amplifier sensitivity to deflection voltage |
| 02/05/2003 | CN1395365A Wide-band bias system of bias electronic circuit and amplifier using said system |
| 02/05/2003 | CN1395364A Switching amplifier and signal amplifying method |
| 02/05/2003 | CN1395310A Internal power supply for IC with temp. compensating pedestal generator |
| 02/05/2003 | CN1101077C Split-path linear isolation circuit apparatus and method |
| 02/04/2003 | US6516206 Transceiver operation in radio system |
| 02/04/2003 | US6516182 High gain input stage for a radio frequency identification (RFID) transponder and method therefor |
| 02/04/2003 | US6515612 Method and system to reduce signal-dependent charge drawn from reference voltage in switched capacitor circuits |
| 02/04/2003 | US6515547 Self-biased cascode RF power amplifier in sub-micron technical field |
| 02/04/2003 | US6515546 Bias circuit for use with low-voltage power supply |
| 02/04/2003 | US6515545 RF power amplifier transistor quiescent current checking and adjusting |
| 02/04/2003 | US6515544 Multi-terminal power combining feed-forward amplifier |
| 02/04/2003 | US6515542 Differential intermediate frequency (IF) amplifier with narrow band noise dithering for driving high speed analog-to-digital conversion and communication applications |
| 02/04/2003 | US6515541 Multi-level power amplifier |
| 02/04/2003 | US6515518 Analog switch circuit |
| 02/04/2003 | US6515464 Input voltage offset calibration of an analog device using a microcontroller |
| 01/30/2003 | WO2003009553A1 Line driver for digital signal transmission |
| 01/30/2003 | WO2003009468A1 Heterojunction bipolar transistor optoelectronic transimpedance amplifier using the first transistor as an optical detector |
| 01/30/2003 | WO2003009466A1 Preamplification circuit |
| 01/30/2003 | WO2002056459A3 A high performance intermediate stage circuit for a rail-to-rail input/output cmos operational amplifier |
| 01/30/2003 | WO2002054581A3 Class e doherty amplifier topology for high efficiency signal transmitters |
| 01/30/2003 | US20030021430 Multifunctional power supply unit for a portable game machine |
| 01/30/2003 | US20030021133 Current-voltage converter |
| 01/30/2003 | US20030020724 Method and apparatus for uniform brightness in displays |
| 01/30/2003 | US20030020557 Digital signals, radio transmitter circuits and method |
| 01/30/2003 | US20030020555 Switched capacitor circuit |
| 01/30/2003 | US20030020547 Adjustable peaking capacitor in high-speed optical fiber communication receiver |
| 01/30/2003 | US20030020546 Active element bias circuit for RF power transistor input |
| 01/30/2003 | US20030020545 Linear power amplifier |
| 01/30/2003 | US20030020543 Bipolar differential amplifier |
| 01/30/2003 | US20030020542 Level-shift circuits and related methods |
| 01/30/2003 | US20030020540 Amplifier bias adjustment circuit to maintain high-output third-order intermodulation distortion performance |
| 01/30/2003 | US20030020539 Power amplifier apparatus |
| 01/30/2003 | US20030020519 Input buffer for analog-to-digital convertor |
| 01/30/2003 | US20030020446 Voltage-current converter |
| 01/30/2003 | US20030020445 EMC immune low drop regulator |
| 01/30/2003 | DE10132800C1 Rauscharme Verstärkerschaltung Low-noise amplifier circuit |
| 01/29/2003 | EP1280033A1 EMC immune low drop regulator |
| 01/29/2003 | EP1279230A1 Differential phase-locked-loop circuit |
| 01/29/2003 | EP1279223A2 Boosted high gain, very wide common mode range, self-biased operational amplifier |
| 01/29/2003 | CN1394386A Voltage level translation circuits |
| 01/29/2003 | CN1394385A Voltage level translation circuits |
| 01/29/2003 | CN1393991A Linear power amplifier and multi-carrier power amplifying method and system |
| 01/29/2003 | CN1100397C Power interface circuit for TDMA transmitter |
| 01/29/2003 | CN1100382C Reactive current trimmed power amplifier and trimming method thereof |
| 01/28/2003 | US6512419 Method and apparatus to tune and calibrate an on-chip oscillator in a wireless transceiver chip |
| 01/28/2003 | US6512418 Amplifier |
| 01/23/2003 | WO2003007473A1 Amplifier switch |
| 01/23/2003 | WO2002054588A3 Multiplexed input envelope restoration scheme for linear high-efficiency power amplification |
| 01/23/2003 | WO2002013371A3 Driver circuit for subscriber terminals |
| 01/23/2003 | US20030017840 Cellular telephone |
| 01/23/2003 | US20030017818 Circuit intended to generate a substantially constant negative conductance as a function of frequency |
| 01/23/2003 | US20030017813 Parallel operation system of transmission amplifier |
| 01/23/2003 | US20030016426 Apparatus and method for detecting beam power in optical drive |
| 01/23/2003 | US20030016298 Flexy-power amplifier: a new amplifier with built-in power management |
| 01/23/2003 | US20030016091 Equalization of a transmission line signal using a variable offset comparator |
| 01/23/2003 | US20030016084 Heterojunction bipolar transistor optoelectronic transimpedance amplifier using the first transistor as an optical detector |
| 01/23/2003 | US20030016083 Linear power amplifier |
| 01/23/2003 | US20030016082 High frequency power amplifier circuit device |
| 01/22/2003 | EP1277276A1 Electronic circuit for providing a desired common mode voltage to a differential output of an amplifier stage |
| 01/22/2003 | EP1277275A1 Ft-multiplier amplifier with low-power biasing circuit |
| 01/22/2003 | EP1277274A2 An accurate power detection circuit for use in a power amplifier |
| 01/22/2003 | CN2532622Y Remote programing controlled digital power amplifier |
| 01/22/2003 | CN2532620Y 数字功率放大器 Digital Power Amplifier |
| 01/22/2003 | CN1393053A Bootstrapped dual-gate class E amplifier circuit |
| 01/22/2003 | CN1393052A Cascode bootstrapped analog power amplifier circuit |
| 01/22/2003 | CN1393036A Combined transistor-capactor structure in deep sub-micro CMOS for power amplifier |
| 01/22/2003 | CN1392668A Voltage comparing circuit |
| 01/22/2003 | CN1099755C Microwave amplifier for reducing pulsating noise |
| 01/21/2003 | US6510012 High-speed CMOS buffer circuit with programmable quadratic transfer function |
| 01/21/2003 | US6509825 Integrated circuit device having a self-biased, single pin radio frequency signal input |
| 01/21/2003 | US6509799 Electrically tuned integrated amplifier for wireless communications |
| 01/21/2003 | US6509797 Amplifier phase reversal suppression |
| 01/21/2003 | US6509796 Variable transconductance variable gain amplifier utilizing a degenerated differential pair |
| 01/21/2003 | US6509795 CMOS input stage with wide common-mode range |
| 01/21/2003 | US6509794 Systems for rail-to-rail dynamically controlled amplifiers and input stages |