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)
12/1999
12/22/1999EP0966095A1 Apparatus and method for extending the dynamic range of a mixer using feed forward distortion reduction
12/22/1999CN1239389A System and method for calibrating single sideband receiver reject image product
12/21/1999US6006081 Communications receivers
12/21/1999US6006080 Receiving mixer circuit for mobile radio transceiver designed to operate with multiple modulation modes and multiple frequency bands
12/21/1999US6005506 Receiver with sigma-delta analog-to-digital converter for sampling a received signal
12/21/1999CA2147921C Dual-function double balanced mixer circuit
12/15/1999EP0964523A1 High frequency upconverter
12/14/1999US6002926 Double superheterodyne type receiving circuit
12/14/1999US6002924 Full-spectrum all-mode radio receiver apparatus and method
12/14/1999US6002923 Signal generation in a communications transmitter
12/14/1999US6002860 High frequency noise and impedance matched integrated circuits
12/14/1999US6002363 Combined GPS positioning system and communications system utilizing shared circuitry
12/14/1999US6002352 Method of sampling, downconverting, and digitizing a bandpass signal using a digital predictive coder
12/14/1999US6002302 Frequency generator
12/11/1999CA2272077A1 Receiving broadcast channel and broadcast process, especially for a mobile telephone
12/09/1999WO1999063676A1 Merged variable gain mixers
12/09/1999WO1999063655A1 Methods of suppressing reference oscillator harmonic interference and related receivers
12/09/1999DE19823103A1 Mehrfachband-Frequenzgenerierung mit einer PLL-Schaltung Multi-band frequency generation using a PLL circuit
12/08/1999EP0963110A2 Frequency conversion arrangement for a composite television signal
12/08/1999EP0962046A2 System and method for harmonic interference avoidance in carrier recovery for digital demodulation
12/08/1999CN1237866A Transceiver for wireless communication
12/07/1999US5999845 Muscle artifact noise detector for ECG signals
12/07/1999US5999804 Low noise quadrature mixer circuit
12/07/1999US5999802 Direct conversion tuner
12/07/1999US5999793 Satellite receiver tuner chip with frequency synthesizer having an externally configurable charge pump
12/07/1999US5999572 Digital broadcasting receiver tuner
12/02/1999WO1999062199A1 A receiver and receiving method for wireless communication
12/02/1999WO1999062178A1 Multiband frequency generation using a single pll-circuit
12/01/1999EP0961399A1 Multiple conversion radio receivers
12/01/1999EP0961398A1 Mixer circuit arrangements
12/01/1999EP0960473A1 Signal analog processing circuit for satellite positioning receiver
12/01/1999CN1237063A DBS tuner for receiving satellite broadcast
11/1999
11/30/1999US5995819 Frequency converter and radio receiver using same
11/30/1999US5995818 Low noise block downconverter
11/27/1999CA2272877A1 Mixer circuit arrangements
11/24/1999EP0959559A1 Direct broadcast satellite tuner
11/24/1999EP0959503A1 Field effect transistor, control method for controlling such a field affect transistor and a frequency mixer means including such a field effect transistor
11/24/1999EP0958657A1 A communication system, a communication device and a frequency synthesizer
11/24/1999EP0958653A1 Transmit signal generation with the aid of a receiver
11/24/1999EP0721697B1 Dwarf waves mixer realized by windowing
11/24/1999CN1236502A Frequency synthesizer circuit for mobile stations
11/23/1999US5991612 Amplitude correction circuit
11/23/1999US5991603 Narrow-band communication apparatus
11/23/1999US5991597 Converter for a satellite signal receiving antenna
11/17/1999CN1235379A Field effect transistors, control method for controlling such field effect transistor and frequency mixer means including such field effect transistor
11/16/1999US5987309 Transceiver circuits for TDMA system with variable frequency second local oscillator
11/11/1999WO1999057929A1 Gsm cellular telephone and gps receiver combination
11/11/1999DE19819038A1 Frequency converter arrangement for high frequency receivers or generators
11/11/1999CA2270662A1 Field effect transistor, control method for controlling such a field effect transistor and a frequency mixer means including such a field effect transistor
11/10/1999CN1234696A Selective paging wireless receiver using direct conversion method
11/09/1999US5983127 ECG noise detection system
11/09/1999US5983070 Method and system providing increased antenna functionality in a RF distribution system
11/03/1999EP0954123A1 Base station transceiver for a radio communications system
11/03/1999EP0954093A1 Suppression of local oscillator second order harmonics
11/03/1999EP0623259B1 An integrated circuit including a surface acoustic wave transformer and a balanced mixer
11/03/1999CN1233925A Dual band mobile phone hand set
11/03/1999CN1233912A Synchrodyning of VSB and QAM final I-F signals supplied by separate converters in QAM/VSB digital TV receiver
11/02/1999US5978662 Circuit arrangement comprising a Cartesian amplifier
11/02/1999US5977760 Bipolar operational transconductance amplifier and output circuit used therefor
10/1999
10/28/1999WO1999055015A1 Direct conversion receiver
10/28/1999WO1999039432A9 Structure and method for super fet mixer having logic-gate generated fet square-wave switching signal
10/27/1999EP0952665A2 Slope, drift and offset compensation in zero-if receivers
10/26/1999US5974306 Time-share I-Q Mixer system with distribution switch feeding in-phase and quadrature polarity inverters
10/26/1999US5973576 Mixer for mixing carrier signals and data signals
10/26/1999US5973539 Mixer circuit for mixing two signals having mutually different frequencies
10/20/1999EP0951138A1 Method for attenuating spurious signals and receiver
10/20/1999EP0950194A2 An improved gps receiver utilizing a communication link
10/14/1999WO1999052214A2 Communications device
10/13/1999CN1045702C Frequency mixer circuit using FET
10/12/1999US5966666 Multiple-band mobile transceiver having a smaller number of local oscillators
10/12/1999US5966646 Dual-band radio receiver
10/12/1999US5966297 Large bandwidth analog isolation circuit
10/07/1999WO1999050954A1 Digital signal processing architecture for multi-band radio receiver
10/07/1999CA2326103A1 Digital signal processing architecture for multi-band radio receiver
10/06/1999EP0948129A1 RF image reject mixer for a radio receiver.
10/06/1999EP0947053A2 Improvements in or relating to phasing receivers
10/05/1999US5963858 Method and apparatus for mixing signals
10/05/1999US5963856 Wireless receiver including tunable RF bandpass filter
09/1999
09/29/1999EP0945998A2 Receiver for high frequency signals with two or more receiver branches
09/29/1999EP0945991A2 Dual band mobile phone handset
09/29/1999CN1230309A Compensation for second order intermodulation in homodyne receiver
09/28/1999US5959499 Predistortion system and method using analog feedback loop for look-up table training
09/28/1999CA2181807C Wideband frequency signal digitizer and method
09/23/1999DE19809283A1 Difference amplifier circuit e.g. for operational amplifiers and integrated circuits
09/22/1999EP0943176A1 Double balanced compact mixer using microwave monolithic integrated circuit cold fet quad
09/22/1999EP0943175A1 Method and arrangement for frequency conversion
09/22/1999CN1229541A 无线电接收机 Radio receiver
09/21/1999US5955783 High frequency signal processing chip having signal pins distributed to minimize signal interference
09/16/1999WO1999046864A1 Integrable radio receiver circuit for frequency-modulated digital signals
09/16/1999WO1999046852A1 Dc offset correction for direct conversion tuner ic
09/16/1999WO1999039432B1 Structure and method for super fet mixer having logic-gate generated fet square-wave switching signal
09/16/1999DE19810558A1 Integratable radio receiver circuit for frequency modulated digital signals
09/15/1999EP0942526A1 Circuit arrangement for adjusting the impedance of a differential active component
09/15/1999EP0701745B1 Direct conversion tuner
09/14/1999US5953644 Microwave transmission system
09/14/1999US5953641 Multimode radio communication terminal
09/14/1999CA2187967C Balanced modulator
09/14/1999CA2158667C Method and apparatus for communication and signal synthesis
09/10/1999WO1999045636A1 Front end filter circuitry for a dual band gsm/dcs cellular phone
09/08/1999EP0940014A1 Method and apparatus for mixing signals
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