Patents
Sitemap › H03 - Basic electronic circuitry › H03D - Demodulation or transference of modulation from one carrier to another › H03D 7 - Transference of modulation from one carrier to another, e.g. frequency-changing
Patents for H03D 7 - Transference of modulation from one carrier to another, e.g. frequency-changing (7,673)
09/2003
09/03/2003CN1440588A 无线电接收机 Radio receiver
09/03/2003CN1120567C Microwave mixing circuit and down-converter
09/02/2003US6615031 Heterodyne stage for high-frequency receivers
08/2003
08/28/2003WO2003071696A1 Method and apparatus for down conversion of radio frequency (rf) signals
08/28/2003WO2003071673A2 Frequency down converter using a multitone local oscillator
08/28/2003US20030162521 System and method for on-chip filter tuning
08/28/2003US20030162515 Ultra-high linearity RF passive mixer
08/28/2003CA2477310A1 Frequency down converter using a multitone local oscillator
08/28/2003CA2477307A1 Method and apparatus for down conversion of radio frequency (rf) signals
08/27/2003EP1338089A2 Active continuous-time filter with increased dynamic range in the presence of blocker signals
08/27/2003EP0880713B1 Combined gps positioning system and communications system utilizing shared circuitry
08/26/2003US6611570 Programmable digital intermediate frequency transceiver
08/26/2003US6611569 Down/up-conversion apparatus and method
08/21/2003US20030157918 Double balanced FET mixer with high IP3 and IF response down to DC levels
08/21/2003US20030157906 High-frequency signal transmission apparatus and electronic tuner using the same
08/21/2003US20030155959 Class AB differential mixer
08/20/2003EP1337035A1 Mixer with exponentially variable gain
08/20/2003EP1336246A2 Direct conversion receiver
08/14/2003WO2003067775A1 A multi-band receiver
08/14/2003WO2003067754A1 Output circuit amd mixer circuit
08/14/2003US20030153293 Use of an image reject mixer in a forward data channel tuner
08/14/2003US20030151136 LTCC fet mixer
08/13/2003EP1335488A2 Frequency conversion circuit having phase noises lowered
08/13/2003EP1335487A2 Quadrature mixer circuit using double frequency conversion
08/13/2003EP1177621B1 Mos variable gain amplifier
08/13/2003CN1435994A High frequency signal transmission device and electronic tuner using it
08/13/2003CN1118188C DBS tuner for receiving satellite broadcast
08/07/2003WO2003065585A1 Transceiver using a harmonic rejection mixer
08/07/2003WO2003065580A1 Television tuner and printed circuit board used therein
08/07/2003WO2002089313A3 Multiple frequency converter using digital mixers
08/07/2003US20030148751 Differential mixer injection with optional step gain control
08/07/2003US20030147014 Television signal transmitter capable of eliminating occurrence of adverse influences caused by interference signals
08/07/2003CA2474129A1 Transceiver using a harmonic rejection mixer
08/06/2003EP1333575A1 Electronic tuner
08/06/2003EP1332563A1 Two-port demodulation device
08/06/2003EP1332548A2 Direct conversion tuner
08/05/2003US6603964 Mixer with reduced carrier feedthrough
07/2003
07/31/2003WO2003063371A1 High frequency signal receiving apparatus
07/31/2003WO2002041488A3 Self oscillating mixer
07/30/2003EP1330905A1 Modulator with low sensitivity to amplitude and phase errors of the carrier signal
07/30/2003EP1183777B1 Band-pass filter with carrier frequency reduction
07/30/2003CN1433592A Demodulating method and equipment in high-speed time-division multiplex packet data transmission
07/30/2003CN1116777C Transceiver for wireless communication
07/29/2003US6600913 Two-port demodulation device
07/29/2003US6600906 Up/down converter
07/29/2003US6600795 Receiving circuit
07/24/2003WO2003061145A1 Generating local oscillator signals for direct downconversion
07/24/2003WO2003061112A1 Transmission mode mixing device comprising rejection of intermediate, low lateral and local oscillator frequencies,
07/24/2003US20030139879 GPS receiver and method for processing GPS signals
07/24/2003US20030139168 Methods and systems for down-converting electromagnetic signals, and applications thereof
07/23/2003EP1329028A1 Subharmonic mixer circuit and method
07/23/2003EP1329018A1 Reducing the dc offset of a homodyne receiver
07/23/2003CN1115894C Method and appts. of down frequency conversion
07/23/2003CN1115787C Transmitter comprising VCO
07/22/2003US6597900 Circuit arrangement providing impedance translation filtering
07/22/2003US6597899 Image reject mixer circuit arrangements
07/22/2003US6597247 Circuit for the frequency multiplication of an angle modulated signal using a PLL and method
07/17/2003WO2001095552A3 High frequency network receiver
07/17/2003US20030134611 Local oscillator balun using inverting circuit
07/17/2003US20030133517 Signal generating circuit
07/17/2003US20030133049 Tuner arrangement and set top box
07/17/2003US20030132868 Frequency converter for converting a digital baseband signal into a real bandpass signal
07/17/2003US20030132455 Methods and apparatus for implementing a receiver on a monolithic integrated circuit
07/16/2003EP1327298A2 Frequency synthesiser
07/16/2003CN1430390A Device and method for compensating error of analog integral modulator
07/16/2003CN1115060C Radio selection call receiver capable of increasing receiving ratio
07/16/2003CN1114997C Raidio receiver
07/15/2003US6594504 Frequency transposition device having low local oscillator signal leakage and corresponding leakage reduction process
07/15/2003US6594478 Self oscillating mixer
07/15/2003US6594477 Electronic tuner
07/10/2003WO2003017507A3 Transmitter apparatus and methods using frequency doubling modulation
07/10/2003US20030130006 Two-stage variable-gain mixer employing shunt feedback
07/10/2003US20030129959 Weaver image reject mixer with fine resolution frequency step size
07/10/2003US20030129958 Mixer having low noise, controllable gain, and/or low supply voltage operation
07/10/2003US20030129955 Walking weaver image reject mixer for radio
07/09/2003EP1325552A2 Calibration of a quadrature receiver
07/09/2003CN1429426A Apparatus for radio frequency processing with dual modulus synthesizer
07/09/2003CN1114314C Multi-tap radio frequency modulator
07/09/2003CN1114277C Microwave mixer circuit and down converter using said circuit
07/08/2003US6591093 Circuit and method for frequency translation
07/08/2003US6591091 System and method for coarse/fine PLL adjustment
07/08/2003US6590943 Radio receiver
07/08/2003CA2337077C Multi-conversion radar detector having increased tuning range and self-calibrating function
07/08/2003CA2092960C Aperture-coupled microstrip line magic-tee
07/03/2003US20030125006 Communication device
07/03/2003US20030124981 Method of eliminating a DC component and filtering device obtained by this method
07/02/2003CN1113453C Linear RF power amplifier with optically activated switches
07/02/2003CN1113250C GPS receiver and method for processing GPS signals
07/01/2003US6587678 Direct conversion receiver employing subharmonic frequency translator architecture and related preprocessor
07/01/2003US6587513 Predistorter
06/2003
06/26/2003US20030119474 Quadrature mixer circuit including three-input local mixers
06/26/2003US20030119473 Adjustable balanced modulator
06/26/2003US20030119472 Switched capacitor mixer circuit to attain high gain and linearity in radio frequency receivers
06/26/2003US20030119470 Generating local oscillator signals for downconversion
06/26/2003US20030119458 Up/down converter
06/26/2003US20030119456 Voltage controlled quadrature oscillator with phase tuning
06/26/2003US20030118126 Apparatus and method for compensating error for analog quadrature modulator (AQM)
06/25/2003EP1320934A2 Frequency translator using a cordic phase rotator
06/25/2003EP1320926A2 Wideband fast-hopping receiver front-end and mixing method
06/25/2003EP1320925A2 Receiver , and method
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