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)
10/2003
10/07/2003US6630899 Scheme for maximizing efficiency of power amplifier under power backoff conditions
10/07/2003US6630867 Power amplifier with provisions for varying operating voltage based upon power amplifier output power
10/07/2003US6630865 Push-pull amplifiers
10/07/2003US6630864 Linear variable gain amplifiers
10/07/2003US6630862 System for pre-distorting an input signal for a power amplifier using-non-orthogonal coordinates
10/07/2003US6630861 Variable gain amplifier
10/07/2003US6630817 Electrical circuit arrangement for converting an input voltage
10/07/2003CA2289396C Feed forward compensation using phase and time modulation
10/02/2003WO2003081870A1 Adaptive predistorter based on the probability distribution function of the output amplitude
10/02/2003WO2003081867A1 Transmitting method and transmitting apparatus
10/02/2003WO2003081833A2 Floating-gate analog circuit
10/02/2003WO2003081793A1 System and method for eliminating signal zero crossings in single and multiple channel communication systems
10/02/2003WO2003081792A1 Method and apparatus using base band transformation to improve transmitter performance
10/02/2003WO2003081791A1 Transmission power control apparatus and method thereof
10/02/2003WO2003081772A1 Optimising power consumption in amplifiers
10/02/2003WO2003081771A1 A bias circuit for a bipolar transistor
10/02/2003WO2003081770A1 Method and apparatus for providing carrier cancellation in a feed forward amplifier circuit
10/02/2003WO2002003541A3 Digitally modulated rf amplifier system having reduced intermodulation energy at rf channel edges
10/02/2003US20030186509 Method of manufacturing semiconductor device
10/02/2003US20030185409 Noise reduction method
10/02/2003US20030184384 Voltage-limited distributed current source for ultra-broadband impedance termination
10/02/2003US20030184383 Distributed amplifier
10/02/2003US20030184382 High frequency amplifier
10/02/2003US20030184379 Operational amplifier output stage and method
10/02/2003US20030184376 Class D amplifier energy control
10/02/2003US20030184375 Feedforward signal generation for combined amplifiers
10/02/2003US20030184374 Type-based baseband predistorter function estimation technique for non-linear circuits
10/02/2003US20030184373 Ultra-low distortion, wide-bandwidth amplifier architecture using actively phase-matched feed-forward linearization
10/02/2003US20030184372 Distortion compensating apparatus
10/02/2003US20030184371 Power amplifier array with same type predistortion amplifier
10/02/2003US20030184370 Reference voltage generating circuit and voltage amplifier using the same
10/02/2003US20030184369 Distributed circular geometry power amplifier architecture
10/02/2003US20030184359 Current leakage compensation circuit and method
10/02/2003US20030184313 Amplification device
10/02/2003US20030184267 Internal power-supply potential generating circuit
10/02/2003US20030183871 Floating-gate analog circuit
10/01/2003EP1349267A1 Amplifier circuit for am broadcasing
10/01/2003EP1348254A1 Amplifier circuit
10/01/2003EP0916181B1 Voltage to current converter for high frequency applications
10/01/2003CN1446399A 信号调制 Modulation
10/01/2003CN1446398A Broad-band driver circuit
10/01/2003CN1445925A 线性调节器 Linear regulator
10/01/2003CN1445634A Temp. characteristic compensation device
10/01/2003CN1123116C Pulse referenced control method for enhance power amplification of pulse modulated signal
10/01/2003CN1123115C Fulse modulation power amplifier with enhanced cascade control method
10/01/2003CN1123114C Rodio communication system with multiple portable device for communication
09/2003
09/30/2003US6628221 Signal amplifying method, signal amplifier and devices related therewith
09/30/2003US6628170 Low noise amplifier
09/30/2003US6628169 Method and circuit for trimming offset and temperature drift
09/30/2003US6628161 Reference voltage circuit
09/30/2003US6628146 Comparator circuit and method
09/30/2003US6627867 Integrated fiber optic receiver power meter
09/25/2003WO2003079587A1 Rf transmitters with saturation detection and correction and methods therefor
09/25/2003WO2003079545A1 An implementation method for pre-distortion of non-linear devices
09/25/2003WO2003079544A1 Transistor arrangement
09/25/2003WO2003079543A1 Cascode amplifier
09/25/2003WO2003079542A1 Microwave circuit
09/25/2003WO2003079541A1 R.f. output power control
09/25/2003WO2003079540A2 Arrangement for reducing non-linear distortions in an output signal of an amplifier stage
09/25/2003WO2003079406A2 Voltage-limited distributed current source for ultra-broadband impedance termination
09/25/2003WO2002060051A3 High linearity circuits and methods regarding same
09/25/2003WO2002031996A3 Adjustment of bias current in a first integrated circuit based on a signal gain of a second integrated circuit
09/25/2003WO2002029970A3 Variable bias control for switch mode rf amplifier
09/25/2003US20030181191 Feed-forward amplifier loop control utilizing if signal processing
09/25/2003US20030181181 Low noise amplifier (LNA) gain switch circuitry
09/25/2003US20030179831 Power amplifier linearization
09/25/2003US20030179829 Method and apparatus using base band transformation to improve transmitter performance
09/25/2003US20030179828 Method for avoiding interference radiation of am transmitters used in digital transmission
09/25/2003US20030179051 Cooling circuit; heat insulation container; stable signal transmission
09/25/2003US20030179048 Amplifier bias system and method
09/25/2003US20030179047 Operational amplifier having large output current with low supply voltage
09/25/2003US20030179043 Method and apparatus for providing carrier cancellation in a feed forward amplifier circuit
09/25/2003US20030179042 Distortion reduction
09/25/2003US20030179041 Method and apparatus for cancellation of third order intermodulation distortion and other nonlinearities
09/25/2003US20030179039 Amplifying circuit capable of limiting amplitude of output signal supplied to a speaker
09/25/2003US20030179038 Amplifier and tuner
09/25/2003US20030179037 Method and circuit for reduction of audible turn-on and turn-off transients in switching amplifiers
09/24/2003EP1347570A1 Temperature-stable bias circuit for an integrated circuit field-effect transistor
09/24/2003EP1346473A2 Feed-forward amplifier loop control utilizing if signal processing
09/24/2003EP1346472A1 Closed loop active cancellation technique (act)-based rf power amplifier linearization architecture
09/24/2003EP1346469A2 Triple class e doherty amplifier topology for high efficiency signal transmitters
09/24/2003EP1346466A2 Modulator using class-e stage
09/24/2003CN2575899Y Hand-free device for push-button trigger electronic sound volume adjusting mobile telephone
09/24/2003CN2575898Y Telephone set with wireless earphone
09/24/2003CN1444794A Linearized class C amplifier with dynamic biasing
09/24/2003CN1444411A Feedforward amplifier with double loop
09/24/2003CN1444335A Band domain intragroup delayed flat circuit and distortion compensation amplifier
09/24/2003CN1122359C Automatic gain control circuit, method and receiver
09/24/2003CN1122358C Differential amplifying device
09/23/2003US6625430 Method and apparatus for attaining higher amplifier efficiencies at lower power levels
09/23/2003US6625238 Low power and high linearity receivers with reactively biased front ends
09/23/2003US6624712 Method and apparatus for power modulating to prevent instances of clipping
09/23/2003US6624711 Method and apparatus for power modulating to prevent instances of clipping
09/23/2003US6624702 Automatic Vcc control for optimum power amplifier efficiency
09/23/2003US6624700 Radio frequency power amplifier for cellular telephones
09/23/2003US6624699 Current-controlled CMOS wideband data amplifier circuits
09/23/2003US6624698 Low-voltage, broadband operational amplifier
09/23/2003US6624695 Waveform pershaping for efficiency improvements in DC to RF conversion
09/23/2003US6624694 System and method for producing an amplified signal
09/23/2003US6624693 Amplification circuit for electric charge type sensor
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