Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
11/2000
11/28/2000CA2209666C Apparatus for stabilizing cut-off frequency using a transconductance
11/28/2000CA2179469C Linear low-noise mixer
11/23/2000WO2000070765A1 Cascode signal driver with low harmonic content
11/23/2000WO2000070763A1 A high-voltage level tolerant transistor circuit
11/23/2000WO2000070756A1 Compensation mechanism for compensating bias levels of an operation circuit in response to supply voltage changes
11/23/2000WO2000070751A1 Broadcast transmission system with correction for distortion
11/23/2000WO2000070750A1 Broadcast transmission system with single correction filter for correcting linear and non-linear distortion
11/23/2000WO2000070749A1 Broadcast transmission system with distributed correction
11/23/2000WO2000070748A1 Broadcast transmission system with sampling and correction arrangment for correcting distortion caused by amplifying and signal conditioning components
11/23/2000WO2000070747A1 Switching amplifier crossover distortion reduction technique
11/23/2000WO2000070746A1 Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform
11/23/2000WO2000069245A2 Output buffer with independently controllable current mirror legs
11/23/2000WO2000030248A9 Rf power amplifier linearization using parallel rf power amplifiers having intermod-complementing predistortion paths
11/23/2000CA2374079A1 Broadcast transmission system with correction for distortion
11/23/2000CA2373798A1 Compensation mechanism for compensating bias levels of an operation circuit in response to supply voltage changes
11/23/2000CA2373778A1 Broadcast transmission system with distributed correction
11/23/2000CA2372183A1 Output buffer with independently controllable current mirror legs
11/22/2000EP1054510A2 High frequency tuned amplifier used as a buffer circuit
11/22/2000EP1054507A2 Mobile station employing single ended use of a differential power amplifier for reduced output power
11/22/2000EP1053591A1 Device for amplifying signals
11/21/2000US6150997 Video transmission system
11/21/2000US6150885 Transconductance amplifier with wideband noise filtering
11/21/2000US6150884 Multistage amplifier circuit with improved nested transconductance capacitance compensation
11/21/2000US6150876 Voltage bias, current sense preamplifier for a magnetoresistive reader
11/21/2000US6150853 Integrated unit gain output stage
11/21/2000CA2060859C Multi-stage amplifier with capative nesting and multi-path forward feeding for frequency compensation
11/16/2000WO2000069067A1 Power sensing apparatus for power amplifiers
11/16/2000WO2000069066A1 Adaptive linearizer for rf power amplifiers
11/16/2000WO2000069065A2 Amplifier with wideband digital predistortion
11/16/2000DE10023460A1 Transmit power control circuit for radio transmission devices selects between high and low power transmission levels
11/16/2000CA2370944A1 Adaptive linearizer for rf power amplifiers
11/15/2000CN2406419Y Keyboard-disassembling struture for power amplifier
11/15/2000CN1273455A Feedforward amplifier
11/15/2000CN1058588C Switch-mode power supply for bridged linear amplifier
11/14/2000US6148220 Battery life extending technique for mobile wireless applications
11/14/2000US6148185 Feed-forward amplifying device and method of controlling the same and base station with feed-forward amplifying device
11/14/2000US6147559 Noise figure and linearity improvement technique using shunt feedback
11/14/2000US6147557 Semiconductor circuit compensating for changes in gain slope of the circuit's gain-frequency characteristic caused by ambient temperature changes
11/14/2000US6147555 Amplification system having mask detection
11/14/2000US6147553 Amplification using amplitude reconstruction of amplitude and/or angle modulated carrier
11/14/2000US6147552 Chopper-stabilized operational amplifier including integrated circuit with true random voltage output
11/09/2000WO2000067372A1 Method and apparatus for controlling the common mode impedance misbalance of an isolated single-ended circuit
11/09/2000WO2000067371A1 Balanced error correction amplifier and method of removing distortion from an amplified signal
11/09/2000WO2000067370A1 Digital phase modulator using non-linear amplifiers and a ring oscillator
11/09/2000DE10021944A1 Non dispersive Infra-red (NDIR) acquisition system for a measurement sensor circuit, amplifies modulated direct current signals to reduce noise from the infra-red sensor
11/09/2000CA2336994A1 Digital phase modulator using non-linear amplifiers and a ring oscillator
11/08/2000EP1050957A2 Amplifier system for digitally modulated RF signals having adjacent sideband distortion reduction
11/08/2000EP1050139A1 Pulse shaping which compensates for component distortion
11/08/2000EP1050103A1 Start-up circuit for self oscillating class d amplifier
11/08/2000EP1050102A1 Amplifier with stabilization means
11/08/2000EP1049404A1 Digital sliding pole fast-restore for an electrocardiograph display
11/07/2000US6144706 Distortion compensation circuit
11/07/2000US6144535 Device load variation protection circuit
11/07/2000US6144259 Low-noise amplifier and circuit for controlling the same
11/07/2000US6144258 Apparatus and method for amplifying an audio signal without reference to ground
11/07/2000US6144256 Wide bandwidth, current sharing, Mosfet audio power amplifier with multiple feedback loops
11/07/2000US6144255 Feedforward amplification system having mask detection compensation
11/07/2000US6144243 Method and circuit arrangement for reducing offset voltage of a signal
11/07/2000US6144233 Gain control circuit for controlling operation of a variable-gain amplifier or the like
11/02/2000WO2000065716A1 Circuitry for a high voltage linear current sense ic
11/02/2000WO2000065711A1 Overvoltage protection
11/02/2000EP1049250A2 Temperature compensation AGC circuit with temperature characteristic of AGC voltage
11/02/2000EP1049249A1 Variable gain amplifiers
11/02/2000EP1048176A2 Apparatus and method of linearizing a power amplifier in a mobile radio communication system
11/02/2000EP1048119A1 Orthogonal signal transmitter
11/02/2000CA2371066A1 Overvoltage protection
11/01/2000CN1058117C Method and apparatus for amplifying signal
10/2000
10/31/2000US6141541 Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals
10/31/2000US6141390 Predistortion in a linear transmitter using orthogonal kernels
10/31/2000US6141169 System and method for control of low frequency input levels to an amplifier and compensation of input offsets of the amplifier
10/31/2000US6140879 Cascode amplifier with positive feedback for high frequency performance and method for operating and optimizing such amplifier
10/31/2000US6140874 Amplification system having mask detection and bias compensation
10/31/2000US6140872 Offset-compensated amplifier input stage and method
10/31/2000US6140868 Master tuning circuit for adjusting a slave transistor to follow a master resistor
10/31/2000US6140858 Predistortion circuit for an analog signal in a video communication network
10/31/2000CA2238622C An automatic control system for reducing distortion produced by electrical circuits
10/26/2000WO2000064062A1 System and method for selectively controlling amplifier performance
10/26/2000WO2000064048A1 Rf power amplifier with feedback from the isolation port of a hybrid coupler
10/26/2000WO2000064047A1 Linear traveling wave tube amplifier utilizing input drive limiter for optimization
10/26/2000WO2000064046A1 System and method for converting from single-ended to differential signals
10/26/2000WO2000064045A1 Amplifier arrangement
10/26/2000WO2000064025A1 Protective circuit for protecting active components from over- or undervoltage
10/26/2000WO2000041371A3 Power i-q modulation systems and methods using predistortion circuit
10/26/2000CA2370209A1 System and method for selectively controlling amplifier performance
10/25/2000EP1047188A2 Offset voltage cancellation system for radio frequency power controllers
10/25/2000EP1047187A2 Pre-amplifier circuit
10/25/2000EP1047185A2 On-line calibration of linear amplifiers
10/25/2000EP1047184A2 Disbtributed gain line driver amplifier
10/25/2000EP1046225A1 Device with common mode feedback for a differential output
10/25/2000CN1271209A Pre-amplifier cirucit
10/25/2000CN1271116A 电流源 Current source
10/24/2000US6138042 Method, device, phone, and base station for providing an efficient tracking power converter for variable signals
10/24/2000US6137366 High VSWR mismatch output stage
10/24/2000US6137362 Low noise and high input dynamic range differential amplifier stage
10/24/2000US6137361 Low power class A amplifier circuit
10/24/2000US6137360 Differential amplifier and voltage follower circuit
10/24/2000US6137358 Class S radio frequency power amplifier
10/24/2000US6137356 Operational amplifier with means for changing a resistance value of an active feedback element
10/24/2000US6137355 Dual-mode amplifier with high efficiency and high linearity
10/24/2000US6137354 Bypassable amplifier
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