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)
04/2003
04/02/2003EP1186097B1 Amplifier circuit
04/02/2003CN1407830A Radio communication frequency signal amplifier and transmitting/receiving device
04/02/2003CN1407829A 射频功率放大器 RF power amplifier
04/02/2003CN1407726A Driving circuit
04/02/2003CN1407719A High frequency power amplifer, module of high frequency power amplifer and mobile telephone
04/02/2003CN1407718A Operation amplifer with deviation offset function
04/02/2003CN1104774C 增益控制 Gain Control
04/01/2003US6542662 Mode translating waveguide adapter for a quasi-optic grid array
04/01/2003US6542037 Low distortion broadband amplifier using GaAs pHEMT devices
04/01/2003US6542036 Low current amplifier circuit with protection against static electricity
04/01/2003US6542035 Modular high power solid state amplifier
04/01/2003US6542034 Operational amplifier with high gain and symmetrical output-current capability
04/01/2003US6542033 Differential amplifier circuit requiring small amount of bias current in a non-signal mode
04/01/2003US6542032 Extremely linear, high speed, class AB rail to rail bipolar amplifier output stage with high output drive
04/01/2003US6542007 Inverter circuit
04/01/2003US6541945 Apparatus and method for sharing two or more amplifiers to an array of pass circuits in a regulator circuit
04/01/2003CA2132519C Linear amplifier control
03/2003
03/27/2003WO2003025995A1 Semiconductor device and high-frequency amplifier comprising it
03/27/2003WO2003025692A1 Amplifier having a variable power factor
03/27/2003WO2002054589A3 Triple class e doherty amplifier topology for high efficiency signal transmitters
03/27/2003US20030058956 Switching mode power amplifier using PWM and PPM for bandpass signals
03/27/2003US20030058051 Automatic ldmos biasing with long term hot carrier compensation
03/27/2003US20030058050 Amplifier with multiple inputs
03/27/2003US20030058049 Folded cascode high voltage operational amplifier with class ab source follower output stage
03/27/2003US20030058047 Differential amplifier circuit used in solid-state image pickup apparatus, and arrangement that avoids influence of variations of integrated circuits in manufacture and the like
03/27/2003US20030058041 Variable gain amplifier
03/27/2003US20030058040 Pop sound reduction circuit and voice output amplification device
03/27/2003US20030058039 Self-operating PWM amplifier
03/27/2003US20030058038 Class D amplifier
03/27/2003US20030058035 Current control circuitry
03/27/2003US20030058034 Transistor-based interface circuitry
03/27/2003US20030057930 Electrical circuit arrangement for converting an electrical input variable into an impressed output electrical voltage
03/27/2003US20030057436 Semiconductor device
03/26/2003EP1296448A2 Amplifier with multiple inputs
03/26/2003EP1296447A1 High-frequency amplifier
03/26/2003EP1296446A1 Balanced Mixer using bipolar Transistors
03/26/2003EP1295388A1 Signal modulation
03/26/2003EP1295356A1 Mode translating waveguide adapter for a quasi-optic grid array
03/26/2003EP0944956B1 Class d amplifier
03/26/2003EP0910895B1 Current feedback differential amplifier clamp
03/26/2003EP0906662B1 Low voltage analog front end
03/26/2003CN1405977A 差动分离放大电路 Separation differential amplifier circuit
03/26/2003CN1405975A Constant-voltage circuit and infrared telecontrol veceiver using said constant-voltage circuit
03/25/2003US6539235 Channel leakage power monitor apparatus and method
03/25/2003US6538832 Single ended preamplifier having multiple first stage banks for improved noise characteristics
03/25/2003US6538793 Electronically tunable and modulatable quasi-optic grid oscillator
03/25/2003US6538632 Thin film transistor circuit and a semiconductor display device using the same
03/25/2003US6538590 Transient noise reduction circuits, systems and methods in power digital-to-analog converters
03/25/2003US6538515 Power amplifier and method of operating a power amplifier having multiple output-power modes
03/25/2003US6538514 Compensation method in a class-G amplifier output stage
03/25/2003US6538513 Common mode output current control circuit and method
03/25/2003US6538512 Double-cascode two-stage operational amplifier
03/25/2003US6538510 High efficiency, current sink only line driver
03/25/2003US6538507 Automatic gain control circuit with high linearity and monotonically correlated offset voltage
03/25/2003US6538505 Distortion reduction technique for inductive boost amplifier
03/25/2003US6538504 Switching amplifier crossover distortion reduction technique
03/25/2003US6538503 Instrumentation amplifier and method for obtaining high common mode rejection
03/25/2003US6538502 High bandwidth switched capacitor input receiver
03/25/2003US6538501 Radio frequency amplifier and tuner
03/25/2003US6538490 Offset compensation circuit and offset compensation method
03/25/2003US6538477 Input buffer for analog-to-digital convertor
03/25/2003US6538476 Method of forming a pseudo-differential current sense amplifier with hysteresis
03/25/2003US6538245 Amplified CMOS transducer for single photon read-out of photodetectors
03/25/2003US6537216 Transmit circuit for imaging with ultrasound
03/25/2003CA2154490C Closed loop power controller
03/20/2003WO2003024004A1 Photoreceiver assembly for high-powered lasers
03/20/2003WO2003023954A1 Switchable operational amplifier circuit
03/20/2003WO2003023953A1 Toi and power compression bias network
03/20/2003WO2003023952A1 Gain circuit including ndr and method
03/20/2003WO2002045067B1 Switched amplifier drive circuit for liquid crystal displays
03/20/2003US20030055590 High power amplifier operating point determination apparatus and method
03/20/2003US20030052738 Semiconductor integrated circuit
03/20/2003US20030052737 Operational amplifier in which the idle current of its output push-pull transistors is substantially zero
03/20/2003US20030052736 Radio frequency amplifier and television tuner
03/20/2003US20030052731 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor
03/20/2003US20030052727 High linearity, high gain mixer circuit
03/20/2003US20030052715 Method and apparatus for mitigating the hysteresis effect in a sensing circuit
03/20/2003US20030052653 Amplifier having a variable power factor
03/20/2003DE10035065C2 Leistungsverstärkerschaltung mit Versorgungseinstellung zum Steuern des Spitzen-Mittelwert-Leistungsverhältnisses des verstärkten Signals und Verfahren zum Verstärken A power amplifier circuit with supply setting for controlling the peak-to-average power ratio of the amplified signal and method for enhancing
03/19/2003WO2002025808A1 Nonlinear distortion compensation power amplifier
03/19/2003EP1293074A1 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals
03/19/2003EP1293040A2 Radio frequency device with fast charging of an input capacitance
03/19/2003EP1293038A1 Pwm limiter
03/19/2003EP1293037A1 Silent start
03/19/2003EP1293036A1 Demodulation filter
03/19/2003EP1293035A2 Level shifter for switching power amplifier
03/19/2003EP1293011A1 Techniques for enhancing gain in a quasi-optic grid array
03/19/2003EP1292867A2 Voltage regulator circuit
03/19/2003EP0682826A4 A differential amplifier with common mode bias
03/19/2003CN1404652A Amplifier having stacked current-driven current drivers
03/19/2003CN1404651A High-frequency amplifier circuit with negative impedance cancellation
03/19/2003CN1404650A Amplifier circuit and method for reducing stray feedback
03/19/2003CN1404218A Multi-stage difference amplifier with common-mode feedback circuit
03/19/2003CA2421773A1 Nonlinear distortion compensation power amplifier
03/18/2003US6535724 Receiver portion of a telephone
03/18/2003US6535434 Architecture and scheme for a non-strobed read sequence
03/18/2003US6535090 Compact high-frequency circuit device
03/18/2003US6535069 High-frequency power amplifier module
03/18/2003US6535068 System and method for temperature compensated IF amplifier
03/18/2003US6535067 Power saturation control of class C bipolar amplifiers
1 ... 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 ... 441