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)
09/1999
09/08/1999CN1228207A Receiver and filter arrangement comprising polyphase filters
09/08/1999CN1228001A High-frequency receiver
09/07/1999US5950119 Image-reject mixers
09/07/1999US5949830 Small wireless radio
09/07/1999US5949472 Method and apparatus for tuning channels for CATV and television applications
08/1999
08/31/1999US5945888 Dielectric resonator tunable via a change in gas pressure
08/31/1999US5945876 Soft switching for Cartesian feedback loop control with a transmission system
08/25/1999EP0937333A1 Frequency synthesizer circuit for mobile stations
08/18/1999EP0936764A2 Method and apparatus for calibration of digital down converters in a signal processing system
08/18/1999EP0935851A1 A digital communication device and a mixer
08/17/1999US5940750 Low-cost low noise block down-converter with a self-oscillating mixer for satellite broadcast receivers
08/11/1999EP0906666A4 Printed circuit board having integrated broadside microwave coupler
08/11/1999CN1225548A Wireless selective call receiving apparatus which can reduce current consumption and wireless selective call receiving method
08/10/1999US5937341 Simplified high frequency tuner and tuning method
08/10/1999US5937338 Scanning radio receiver
08/10/1999CA2259671A1 Method and apparatus for calibration of digital down converters in a signal processing system
08/10/1999CA2193153C An efficient rf cmos amplifier with increased transconductance
08/10/1999CA2127366C Frequency control system
08/10/1999CA2095216C Receiver with automatic frequency control
08/10/1999CA2086279C A differential detection demodulator
08/05/1999WO1999039432A1 Structure and method for super fet mixer having logic-gate generated fet square-wave switching signal
08/05/1999WO1999039431A1 Radio system including fet mixer device and square-wave drive switching circuit and method therefor
08/04/1999EP0894369A4 Distribution of radio-frequency signals through low bandwidth infrastructures
08/03/1999US5933771 Low voltage gain controlled mixer
08/03/1999US5933767 Apparatus and method for tuning the gain of a transmitter utilizing cartesian feedback
08/03/1999US5933448 Automatic tuning of a radio transceiver
08/03/1999CA2098660C Automatic frequency control circuit
07/1999
07/29/1999WO1999038253A1 Mixer circuit
07/28/1999EP0932252A2 Tuning demodulator for digitally modulated RF signals
07/28/1999EP0932251A1 A radio receiver and a radio transmitter
07/28/1999CN1224549A Distribution of radio-frequency signals through low bandwidth infrastructure
07/27/1999US5930697 Heterodyne receiver with synchronous demodulation for receiving time signals
07/27/1999US5930696 Broadband low-noise low-intermodulation receiver
07/27/1999US5930689 Apparatus and method for producing a plurality of output signals with fixed phase relationships therebetween
07/27/1999US5930682 Centralized channel selection in a distributed RF antenna system
07/27/1999US5930301 Up-conversion mechanism employing side lobe-selective pre-distortion filter and frequency replica-selecting bandpass filter respectively installed upstream and downstream of digital-to-analog converter
07/27/1999US5929708 Low-voltage radio frequency amplifier
07/22/1999WO1999030424A3 Transmitter comprising a vco
07/21/1999CN1223756A Dual band transceiver
07/20/1999US5926753 Radio selection call receiver capable of increasing receiving ratio
07/20/1999US5926751 Method and apparatus for receiving communication signals
07/20/1999US5926129 Combined duplexer and mixer
07/20/1999US5926052 Delay locked loop circuit
07/15/1999WO1999035736A1 Quadrature modulator and demodulator
07/15/1999CA2316969A1 Quadrature modulator and demodulator
07/14/1999EP0929149A1 Receiver for data transmission
07/14/1999EP0929146A1 Tuner for satellite broadcasting receiver
07/14/1999CN1222792A Radio telecommunication apparatus
07/13/1999US5924024 Method and circuit for achieving frequency conversion
07/13/1999US5924021 Frequency conversion circuit and method for millimeter wave radio
07/13/1999CA2065758C Dual port oscillator for two-stage direct conversion receiver
07/08/1999WO1999034505A1 A mixer for a receiver
07/07/1999EP0927434A1 Thick film construct for quadrature translation of rf signals
07/07/1999EP0819338B1 In-phase and quadrature sampling circuit
07/06/1999US5920811 Superconductor mixer and phase control method therefor
07/06/1999US5920810 Multiplier and method for mixing signals
07/06/1999US5920595 Inter-cross wave compensation method and apparatus performing frequency conversion on signed not detected by a demodulating unit
07/01/1999WO1999007122A8 Biphase modulator with balun design
06/1999
06/30/1999EP0926838A1 Radio communication equipment
06/30/1999EP0926811A1 Modulator with low crosstalk
06/29/1999US5918168 Double super tuner
06/29/1999US5917386 Printed circuit transformer hybrids for RF mixers
06/24/1999WO1999018657A3 Down/up-conversion apparatus and method
06/23/1999EP0924853A1 Diode mixer circuit
06/23/1999EP0923809A1 Satellite receiver
06/23/1999CN1220547A Cable modem tuner
06/23/1999CN1220524A Direct conversion receiver using single reference clock signal
06/22/1999US5914990 Filtering in a receiver that uses log-polar signal processing
06/22/1999US5914986 Receiving circuit
06/22/1999US5914620 Frequency doubling of a quadrature-amplitude modulated signal using a frequency multiplier
06/17/1999WO1999030428A1 Receiver with sigma-delta analog-to-digital converter
06/17/1999WO1999030424A2 Transmitter comprising a vco
06/17/1999WO1999030420A1 A communication system, a communication device and a frequency synthesizer
06/17/1999WO1999030413A1 Efficient polyphase quadrature digital tuner
06/17/1999WO1999017376A3 Diode device having a low threshold voltage
06/16/1999CN1219826A 下行转换混合器 Down-conversion mixer
06/16/1999CA2224953A1 A low voltage topology for radio frequency integrated circuit design
06/15/1999US5912927 Multi-channel transmitter having an adaptive antenna array
06/10/1999WO1999016179A3 Improvements in or relating to phasing receivers
06/09/1999EP0921633A1 Improved frequency shifter with low power dissipation
06/01/1999US5909644 AM radio receiver
05/1999
05/27/1999WO1999026353A1 Transceiver architecture in a dual band mobile phone
05/27/1999WO1999026352A1 Tuning bandwidth minimization for low voltage dual band receiver
05/27/1999WO1999026349A1 Signal generating circuit, and transmitter, receiver and transmitting and receiving device using the circuit
05/27/1999WO1999026336A1 Simplified reference frequency distribution in a mobile phone
05/20/1999WO1999025104A1 Qam modulation using direct digital synthesis and upconversion
05/19/1999EP0917285A1 Low-voltage amplifiers
05/19/1999EP0917283A2 High linearity active balance mixer
05/14/1999WO1999023756A1 Method and device in a telecommunication system
05/14/1999WO1999023755A1 A linear rf power amplifier with optically activated switches
05/12/1999EP0915561A1 Image reject mixer circuit arrangements
05/11/1999US5903827 Single balanced frequency downconverter for direct broadcast satellite transmissions and hybrid ring signal combiner
05/11/1999US5903600 Automatic frequency control circuit for digital radio communication system
05/06/1999EP0913924A1 Tuner for receiving digital television signals
05/06/1999EP0913036A1 Compensation for second order intermodulation in a homodyne receiver
05/06/1999EP0778996B1 Process and device for reshaping pairs of signals
05/04/1999US5901350 Low distortion large swing frequency down coverter filter amplifier circuit
05/04/1999US5901349 Mixer device with image frequency rejection
04/1999
04/29/1999WO1999008389A3 A digital communication device and a mixer
04/29/1999WO1999007122A9 Biphase modulator with balun design
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