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)
11/2005
11/02/2005EP1592126A1 Doherty amplifier and its distortion characteristic compensation method
11/02/2005EP1590934A2 Signal processing system with baseband noise modulation chopper circuit timing to reduce noise
11/02/2005EP1590905A2 Signal processing system with baseband noise modulation and noise fold back reduction
11/02/2005EP1410126A4 Differential current source with active common mode reduction
11/02/2005EP1201023A4 Dc offset calibration for a digital switching amplifier
11/02/2005CN1692551A Differential amplifier and calculation amplifier
11/02/2005CN1692550A Filter circuit and radio device
11/02/2005CN1691495A Differential amplifier device, 2-stage amplifier device, and analog/digital converter device
11/02/2005CN1690674A Color sensor circuit with integrated programmable gain selection
11/02/2005CN1225843C Calibration of in-phase and quadrature transmit branches of transmitter
11/02/2005CN1225834C High-frequency power amplifier with bipolar transistor
11/02/2005CN1225833C Method and device for distortion compensation
11/01/2005US6961554 Power amplifier including a desensitized bias circuit
11/01/2005US6961553 Bidirectional distributed amplifier
11/01/2005US6961546 Adaptive radio transceiver with offset PLL with subsampling mixers
11/01/2005US6961385 Signal processing system with baseband noise modulation chopper circuit timing to reduce noise
11/01/2005US6960959 Power amplifier and communication apparatus
11/01/2005US6960941 Latch circuit capable of ensuring race-free staging for signals in dynamic logic circuits
11/01/2005US6960907 Efficient low dropout linear regulator
11/01/2005US6960754 Photoelectric current and voltage converting circuit
10/2005
10/27/2005WO2005101651A1 High frequency active device
10/27/2005WO2005101650A1 Digital amplifier and methods for enhancing resolution and dynamic range of a digital amplifier
10/27/2005WO2005101538A2 Transconductance circuit for piezoelectric transducer
10/27/2005WO2005101156A1 Reference voltage generating circuit
10/27/2005US20050238014 Receiver and method for receiving burst mode packet
10/27/2005US20050237401 Color sensor circuit with integrated programmable gain selection
10/27/2005US20050237116 FET band amplifier
10/27/2005US20050237115 FET band amplifier
10/27/2005US20050237114 MMIC distributed amplifier gate control using active bias
10/27/2005US20050237112 Even order distortion elimination in push-pull or differential amplifiers and circuits
10/27/2005US20050237109 Servo balancing among driver devices
10/27/2005US20050237108 Switching class A-B amplifier
10/27/2005US20050237105 Self-biased bandgap reference voltage generation circuit insensitive to change of power supply voltage
10/27/2005US20050237095 Frequency output circuit
10/27/2005US20050237088 Circuit for differential current sensing with reduced static power
10/27/2005US20050236689 High-frequency amplification device
10/27/2005DE102005016291A1 Differenzverstärkerschaltung Differential amplifier circuit
10/27/2005DE102004017165A1 Schaltung zur Erhöhung der Transitfrequenz eines Verstärkerelements Circuit for increasing the gain-bandwidth product of an amplifier element
10/27/2005DE102004016073A1 Verfahren zur Erzeugung eines Impulsausgangssignals aus einem periodischen Sägezahnsignal und einer Referenzspannung, und getakteter Stromwandler A method for generating a pulse output signal from a periodic sawtooth signal and a reference voltage, and a clocked current transformer
10/27/2005DE102004015650A1 Automatically stimulated at variable frequencies D-class amplifier for a motor car loudspeaker has a positive feedback closed loop with an error amplifier circuit and a zero crossing detector
10/27/2005CA2562111A1 Method and apparatus for dynamically adjusting a transmitter's impedance and implementing a hybrid power amplifier therein which selectively connects linear and switch-mode power amplifiers in series
10/26/2005EP1589660A2 Frequency output circuit
10/26/2005EP1589659A1 Method for generating a pulse signal with a predetermined shape
10/26/2005EP1589658A1 Differential amplifier device, 2-stage amplifier device, and analaog/digital converter device
10/26/2005EP1589657A1 Control circuit of the transconductance of at least one transistor in conduction
10/26/2005EP1588485A1 Voltage buffer for capacitive loads
10/26/2005EP1588484A1 Pulse modulated power converter
10/26/2005EP1588339A2 Circuit arrangements and methods for a remote control receiver having a photodiode
10/26/2005EP1474863B1 Biasing arrangement for paralleled transistors
10/26/2005EP1421681A4 Thermally distributed darlington amplifier
10/26/2005EP1346469B1 Triple class e doherty amplifier topology for high efficiency signal transmitters
10/26/2005EP1344314B1 Wideband dual amplifier circuits
10/26/2005EP1221195A4 Methods and apparatus for noise shaping a mixed signal power output
10/26/2005CN1689223A Providing DC isolation in switching amplifiers
10/26/2005CN1225138C Linear power amplifier rack of mobile communication base station and its switchover method of the type
10/26/2005CN1225082C High frequency power amplifier and power amplifier module utilizing the same
10/25/2005US6958872 Method and apparatus for measuring an output signal of a floating transducer
10/25/2005US6958742 Current drive system
10/25/2005US6958654 Layout technique for matched resistors on an integrated circuit substrate
10/25/2005US6958653 Temperature compensated amplifier
10/25/2005US6958652 Transconductance varying circuit of transconductor circuit, varying bandwidth filter circuit using the same and digital tuning circuit of transconductor-capacitor filter
10/25/2005US6958650 Push-pull buffer/amplifier
10/25/2005US6958649 High-frequency power amplification electronic part and wireless communication system
10/25/2005US6958647 Dual loop feedforward power amplifier
10/25/2005US6958640 Interpolation delay cell for 2ps resolution jitter injector in optical link transceiver
10/20/2005WO2005099084A1 Automatic current reduction biasing technique for rf amplifier
10/20/2005WO2005098880A2 Distributed active transformer power control techniques
10/20/2005US20050233713 Method and system for compensating for phase variations caused by transmitter activation
10/20/2005US20050232446 Trickle-charged amplifier
10/20/2005US20050231452 Drive circuit with offset compensation capability, and liquid crystal display using the same
10/20/2005US20050231290 Multi-band low noise amplifier system
10/20/2005US20050231289 Integrated amplifier, electronic communication unit with integrated amplifier and method for operating the electronic communication unit with an integrated amplifier
10/20/2005US20050231287 Voltage level detector for power amplifier protection control
10/20/2005US20050231286 Power amplifier
10/20/2005US20050231284 Operational amplifier
10/20/2005US20050231282 Differential output circuit with reduced differential output variation
10/20/2005US20050231281 Class D amplifier
10/20/2005US20050231280 Class D amplifier
10/20/2005US20050231278 High power doherty amplifier
10/20/2005US20050231277 Amplifier circuit
10/20/2005US20050231276 Power amplifier
10/20/2005US20050231275 Operational amplifier
10/20/2005US20050231274 Low-noise, fast-settling bias circuit and method
10/20/2005US20050231239 Transconductance control circuit for at least one transistor in conduction
10/20/2005US20050230758 Transistor well bias scheme
10/19/2005EP1587212A1 Class D amplifier
10/19/2005EP1586162A1 High efficiency power amplification apparatus with multiple power mode
10/19/2005EP1543611A4 Providing dc isolation in switching amplifiers
10/19/2005CN1685622A Method for optimizing an operating point of a power amplifier in a wcdma mobile terminal
10/19/2005CN1685607A 高频功率放大器模块 High-frequency power amplifier module
10/19/2005CN1684531A GSM/CDMA two-way duplex tower top amplifier
10/19/2005CN1684378A Power amplifier mode selector of mobile communication terminal
10/19/2005CN1684362A Drive circuit with offset compensation function, and liquid crystal display apparatus employing the same
10/19/2005CN1684361A Amplifier circuit
10/19/2005CN1684360A D类放大器 Class D Amplifier
10/19/2005CN1684016A Output circuit for concentration scale control, testing apparatus thereof, and testing method
10/19/2005CN1224170C Method and an arrangement relating to telecommunications systems
10/19/2005CN1224166C Power amplifier and communication appts
10/19/2005CN1223977C Display and display driver circuit
10/18/2005US6956781 Amplifier and semiconductor storage device using the same
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