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)
11/2003
11/19/2003EP1363432A1 Efficient charge transfer using a switched capacitor resistor
11/19/2003EP1363393A2 Mixing circuit
11/19/2003EP1363392A2 Gilbert cell mixer
11/19/2003EP1362414A2 Transmitter and receiver circuit for radio frequency
11/19/2003EP1362412A2 Quadrature frequency converter
11/19/2003CN1457556A DC offset correction scheme for wireless receivers
11/19/2003CN1457555A Calibration of in-phase and quadrature transmit branches of transmitter
11/19/2003CN1128538C NTSC with signal receivers with reduced sensitivity to interference from co-channel digital television signals
11/18/2003US6650883 Mixer with adjustable linearity
11/18/2003US6650375 Television signal transmitter for eliminating interference caused by differential signal of two frequency converters
11/13/2003WO2003094339A2 Integrated circuit
11/12/2003EP1361655A1 Mirror suppression circuit in a quadrature demodulator
11/12/2003EP1157456B1 Direct conversion receiver employing subharmonic frequency translator architecture and related preprocessor
11/11/2003US6647250 Method and system for ensuring reception of a communications signal
11/06/2003US20030206065 Apparatus and method for phase lock loop gain control using unit current sources
11/05/2003CN1454408A Reducing the DC offset of a homodyne receiver
11/04/2003US6642767 DC offset cancellation
10/2003
10/30/2003WO2003090370A1 Multiple-input multiple-output radio transceiver
10/30/2003WO2003090368A1 Image signal cancel type heterodyne reception method and direct conversion orthogonal frequency division multiplex reception method
10/30/2003WO2003007471A3 Mixer
10/30/2003WO2002098004A3 Quadrature alignment in communications receivers
10/30/2003US20030203743 Multiple-Input Multiple-Output Radio Transceiver
10/29/2003CN1452769A Image processing device for transmitting color with fidelity and image data providing method
10/29/2003CN1452407A Low-noise frequency changer using for satellite roadcast receiving system and in receiver unit
10/29/2003CN1126340C System and method for generating RF signals in communication transmitter and base band signal generator
10/29/2003CN1126250C Receiver and filter arrangement comprising polyphase filters
10/28/2003US6640091 Dual-band output switching high-frequency transmission circuit with a transmission mixer having two outputs
10/28/2003US6639950 Method and arrangement for correcting phase error in linearization loop of power amplifier
10/28/2003US6639447 High linearity Gilbert I Q dual mixer
10/28/2003US6639446 High linearity, high gain mixer circuit
10/23/2003US20030199259 A Tunable Upconverter Mixer With Image Rejection
10/23/2003US20030197810 Digital IF demodulator with carrier recovery
10/22/2003EP1245080B1 An active polyphase filter with transconductor cross-coupling of filter sections
10/22/2003CN1450641A Semiconductor IC device
10/22/2003CN1125533C Balance frequency mixer
10/21/2003US6636731 Demodulation method preserving a high spectral purity
10/21/2003US6636730 Wideband IF image rejecting receiver
10/21/2003US6636569 Nyquist band frequency translation
10/21/2003US6636115 Amplifier and mixer with improved linearity
10/16/2003WO2003085820A2 Quadrature switching mixer with reduced leakage
10/16/2003WO2003085819A2 Linearity improvement of gilbert mixers
10/16/2003WO2001099270A3 Gilbert cell multiplier in a quadrature modulator
10/16/2003WO2001071906A3 Integrated frequency translation and selectivity with gain control functionality, and applications thereof
10/16/2003US20030194985 Low noise converter employed in satellite broadcast reception system and receiver apparatus
10/16/2003US20030194983 Semiconductor integrated circuit device
10/16/2003US20030194978 System and method for coarse/fine PLL adjustment
10/15/2003CN1449599A A mixer
10/14/2003US6633255 Method for open loop tracking GPS signals
10/14/2003US6633194 Mixer
10/09/2003WO2003084054A2 Amplifier and frequency converter
10/09/2003WO2003019800A3 Method and apparatus for conversion of radio frequency (rf) signals using aperiodic mixing signals
10/09/2003US20030190905 Quadrature divider
10/08/2003EP1351378A1 Quadrature divider
10/08/2003CN1448006A Appts. and method for improved chopping mixer
10/07/2003US6631257 System and method for a mixer circuit with anti-series transistors
10/07/2003US6631256 Simplified high frequency tuner and tuning method
10/07/2003US6631255 Multi-carrier receiver for a wireless telecommunication system
10/02/2003WO2003081775A1 Method and apparatus for digital frequency conversion
10/02/2003WO2003081767A1 Circuit arrangement for shifting the phase of an input signal and circuit arrangement for suppressing the mirror frequency
10/02/2003US20030186670 Method and circuit or down-converting a signal
10/02/2003US20030184378 Mixer and differential amplifier having bandpass frequency selectivity
10/02/2003US20030184366 Filter circuit and detection circuit having filter circuit
10/01/2003EP1349268A2 Large gain range, high linearity, low noise MOS VGA
10/01/2003CN1446397A Calibration of quadrature receiver
10/01/2003CN1123135C Integrable radio receiver circuit for frequency modulated digital signals
10/01/2003CN1123124C Digital communication device and mixer
09/2003
09/30/2003US6628960 Multi-mode radio receiver
09/30/2003US6628927 Method and apparatus for transmitting and receiving signals
09/25/2003WO2003079539A1 Signal processing method and signal processing apparatus
09/25/2003WO2003079538A1 Frequency converter
09/25/2003WO2003079537A2 Frequency converting circuit arrangement and mobile radio set comprising said circuit arrangement
09/25/2003WO2003012478A3 System for recovering information from a magnetic field signal usable for locating an underground object and method
09/25/2003WO2003009464A3 Linearised mixer using frequency retranslation
09/25/2003WO2002096099A3 Quadrature demodulator
09/25/2003WO2002093732A3 Tuner circuit using polyphase filters and mixer
09/25/2003WO2002031962A3 Quadrature frequency converter
09/25/2003US20030181190 Method and apparatus for improving dynamic range in a communication system
09/25/2003US20030181189 Method and apparatus for reducing DC offsets in communication systems using universal frequency translation technology
09/25/2003US20030181186 Reducing DC offsets using spectral spreading
09/24/2003EP1346467A2 Integrated direct conversion satellite tuner
09/24/2003CN1444309A Micrometer wave and milimeter wave guartic harmonic mixer
09/24/2003CN1122357C Microwave mixing circuit
09/23/2003US6625436 Radio receivers
09/23/2003US6625424 Autocalibration of a transceiver through nulling of a DC-voltage in a receiver and injecting of DC-signals in a transmitter
09/18/2003WO2003077413A1 Circuit arrangement for frequency conversion and mobile radio device with the circuit arrangement
09/18/2003WO2003023948A3 Transmitter arrangement especially for mobile radio
09/18/2003US20030176177 Direct conversion receiver employing subharmonic frequency translator architecture and related preprocessor
09/18/2003US20030173945 Method and apparatus for digital frequency conversion
09/17/2003EP1345317A2 Generation of local oscillator inputs for use in a direct conversion receiver
09/17/2003EP1258077B1 Circuit configuration for direct modulation
09/17/2003CN1121772C Radio transmitter
09/11/2003US20030171107 Differential frequency down-conversion using techniques of universal frequency translation technology
09/11/2003US20030169189 Robust system for transmitting and receiving map data
09/11/2003US20030169090 Mixer with exponentially variable gain
09/11/2003US20030169089 High linearity gilbert i q dual mixer
09/10/2003EP1343248A2 Gilbert-Cell Mixer
09/10/2003CN1121092C Method and arrangement for correcting phase error in linearization loop of power amplifier
09/08/2003CA2375438A1 Improvements to a high linearity gilbert i q dual mixer
09/04/2003WO2001093491A3 High frequency network transmitter
09/03/2003EP1341303A1 High-frequency amplifier and high-frequency mixer
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