| Patents for H03D 7 - Transference of modulation from one carrier to another, e.g. frequency-changing (7,673) |
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| 04/15/1997 | US5621345 In-phase and quadrature sampling circuit |
| 04/10/1997 | WO1997013349A2 Receiver architecture for receiving angle-modulated/scanned carrier signals of different frequency |
| 04/09/1997 | EP0766833A1 Electronic viewing aid |
| 04/03/1997 | DE19536526A1 Empfängerarchitektur zum Empfangen von winkelmodulierten/-getasteten Trägersignalen unterschiedlicher Frequenz Receiver architecture for receiving angle-modulated / -getasteten carrier signals of different frequencies |
| 04/02/1997 | EP0766410A2 Ultra high frequency radio communication apparatus |
| 04/02/1997 | EP0766409A2 Multiband downconverter for digital receivers |
| 04/02/1997 | EP0766380A2 Integrated microwave silicon component |
| 04/02/1997 | CN1146672A Two-purpose circuit for receiving and transmitting |
| 04/02/1997 | CN1146664A Single balanced frequency downconverter for direct broadcast satellite transmissions and hybrid ring signal combiner |
| 04/01/1997 | US5617344 Digital filter |
| 04/01/1997 | US5617060 Method and apparatus for automatic gain control and DC offset cancellation in quadrature receiver |
| 03/27/1997 | DE19639237A1 Double television tuner device |
| 03/25/1997 | CA2064979C Image recovery mixer |
| 03/20/1997 | WO1997010647A1 Transmission process in which a conversion oscillator signal is synthesised by means of a fractional n-phase-shift control loop |
| 03/20/1997 | DE19534462A1 Übertragungsverfahren Transmission method |
| 03/19/1997 | EP0763885A2 Modulator and frequency multiplier for use therein |
| 03/19/1997 | CN1145707A Method and appts. for reducing quantization noise |
| 03/19/1997 | CN1145554A Superheterodyne receiving circuit and superheterodyne receiver |
| 03/18/1997 | US5613234 Receive filter using frequency translation for or in cellular telephony base station |
| 03/18/1997 | US5613233 Apparatus with distortion cancelling feedback signal |
| 03/18/1997 | US5613197 Multi-channel transponder with channel amplification at a common lower frequency |
| 03/18/1997 | US5612971 Intermediate frequency receiver apparatus |
| 03/12/1997 | EP0762662A2 Low noise amplifier/mixer/frequency synthesizer circuit for an RF system |
| 03/12/1997 | EP0701746B1 Terrestrial and satellite television reception tuner |
| 03/12/1997 | EP0317642B1 Frequency converter circuit |
| 03/06/1997 | WO1997008857A1 Burst mode optical digital receiver and repeater |
| 03/06/1997 | WO1997008840A2 Common transmit module for a programmable digital radio |
| 03/06/1997 | WO1997008821A1 High performance mixer and method of designing same |
| 03/06/1997 | WO1997008567A1 Digitally programmable radio modules for transponder systems |
| 03/06/1997 | CA2230553A1 Common transmit module for a programmable digital radio |
| 03/05/1997 | EP0760554A1 Direct conversion type frequency mixer circuit receiving an unbalanced signal and outputting an output voltage having a minimized offset voltage |
| 02/27/1997 | WO1997007596A1 A low voltage temperature and vcc compensated radio frequency mixer |
| 02/26/1997 | EP0759656A1 A microwave mixing circuit |
| 02/25/1997 | US5606738 Frequency conversion circuit with linear feedback |
| 02/25/1997 | US5606736 Heterodyne radio receiver with plural variable frequency local oscillator signals |
| 02/23/1997 | CA2179552A1 Low noise amplifier/mixer/frequency synthesizer circuit for an rf system |
| 02/20/1997 | WO1997006607A1 Automatic tuning of a radio transceiver |
| 02/20/1997 | WO1997006604A1 Universal rf receiver |
| 02/20/1997 | CA2227869A1 Universal rf receiver |
| 02/18/1997 | US5604927 Receiver having an adjustable bandwidth filter |
| 02/13/1997 | WO1997005704A1 Multi-channel transceiver having an adaptive antenna array and method |
| 02/11/1997 | US5603099 Transceiver for preventing the degradation of reception sensitivity and modulation accuracy of a transmitted signal when an external reference signal incorporates noise |
| 02/11/1997 | US5603097 Digital radio system capable of high-speed frequency changing at low power consumption |
| 02/11/1997 | US5602874 Method and apparatus for reducing quantization noise |
| 02/11/1997 | US5602847 Segregated spectrum RF downconverter for digitization systems |
| 02/11/1997 | US5602501 Mixer circuit using a dual gate field effect transistor |
| 02/05/1997 | EP0757489A2 Satellite receiver with a controllable head end |
| 02/05/1997 | EP0756780A1 Improvements in or relating to communications receivers |
| 02/05/1997 | CN1142293A Multi-channel digital transceiver and method thereof |
| 02/05/1997 | CN1142147A Device for regulating control-modulation device of microwave doble-phase phase shifting key and frequency mixing device, and method thereof |
| 02/04/1997 | US5600680 High frequency receiving apparatus |
| 02/04/1997 | US5600327 Dielectric waveguide mixer and dielectric waveguide radar module |
| 01/29/1997 | CN1141541A Integrated circuit and transmitter/receiver |
| 01/22/1997 | EP0755125A2 Method for the reduction of secondary receiving positions in homodyne receivers with time variable carrier frequency |
| 01/22/1997 | EP0755124A2 Procedure for increasing the sensitivity of a homodyn receiver |
| 01/14/1997 | US5594759 Quasi-synchronous detection and demodulation circuit and frequency discriminator used for the same |
| 01/14/1997 | US5594633 Voltage-to-current converting circuit operating with low supply voltage |
| 01/14/1997 | US5594341 Nuclear magnetic resonance receiver, method and system |
| 01/08/1997 | EP0752761A2 Transceiver circuits for TDMA system with variable frequency second local oscillator |
| 01/08/1997 | EP0752756A2 Single balanced frequency downconverter for direct broadcast satellite transmissions and hybrid ring signal combiner |
| 01/08/1997 | CN1139998A 接收电路 Receiving circuit |
| 01/08/1997 | CA2180416A1 Single balance frequency downconverter for direct broadcast satellite transmissions and hybrid ring signal combiner |
| 01/02/1997 | EP0751614A1 Cuber based predistortion circuit and mobile station using the same |
| 01/02/1997 | DE19523432A1 Frequency-converting system |
| 01/01/1997 | CN1139343A Double superheterodyne tuner |
| 12/31/1996 | US5589791 Variable gain mixer having improved linearity and lower switching noise |
| 12/24/1996 | US5587713 Radar transmitter/receivers |
| 12/24/1996 | US5587690 Ring resonator oscillator usable in frequency synthesizers and communication apparatus |
| 12/19/1996 | WO1996041295A1 Bipolar analog multipliers for low voltage applications |
| 12/19/1996 | DE19521707A1 Antenna signal receiver apparatus |
| 12/18/1996 | EP0749055A2 Heterodyne receiver with synchronous demodulation for time signal reception |
| 12/12/1996 | WO1996039750A1 Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion |
| 12/11/1996 | EP0748044A2 Variable gain mixer having improved linearity and lower switching noise |
| 12/11/1996 | CN1137710A Transmitter-receiver |
| 12/10/1996 | US5584069 HF mixing stage in the form of a common-base circuit |
| 12/10/1996 | US5584068 Direct conversion receiver |
| 12/10/1996 | US5584066 Correcting circuit for mixing circuit receiver using same and frequency spectrum inverting circuit using same |
| 12/10/1996 | US5584064 Converter circuit for satellite broadcasting receivers having mixer isolation |
| 12/10/1996 | US5584062 Method and apparatus for compensating phase locked receivers |
| 12/10/1996 | US5584059 DC offset reduction in a zero-if transmitter |
| 12/10/1996 | CA2059887C Frequency doubling and mixing circuit |
| 11/26/1996 | US5579341 Multi-channel digital transceiver and method |
| 11/26/1996 | US5578947 Delayed detection type demodulator |
| 11/13/1996 | EP0742647A1 Receiving circuit |
| 11/13/1996 | EP0742640A1 A front-end circuit |
| 11/12/1996 | US5574755 I/Q quadraphase modulator circuit |
| 11/12/1996 | US5574749 Line interface apparatus and method for isolating data terminal equipment from the line |
| 11/12/1996 | US5574409 Apparatus and method for adjusting microwave BPSK modulator and mixer |
| 11/12/1996 | US5574405 Low noise amplifier/mixer/frequency synthesizer circuit for an RF system |
| 11/07/1996 | DE19532989C1 Multiplicative mixer with three or four-pole compensation stage |
| 10/31/1996 | DE19616779A1 Automatische Stromwahl- und Stromversorgungsvorrichtung für einen Mehrfach-Low-Noise-Wandlerblock Automatic Stromwahl- and power supply apparatus for a multiple-low-noise block converter |
| 10/29/1996 | US5570392 Phase generator |
| 10/29/1996 | US5570056 Bipolar analog multipliers for low voltage applications |
| 10/23/1996 | EP0739090A1 Transceiver and method for generating and processing of complex I/Q-signals |
| 10/22/1996 | US5568520 Slope drift and offset compensation in zero-IF receivers |
| 10/17/1996 | WO1996032814A1 Catv converter |
| 10/17/1996 | WO1996032782A1 Compensated ring mixers |
| 10/17/1996 | DE19535356C1 Method of demodulating amplitude modulated high frequency signals |
| 10/16/1996 | EP0738053A2 Automatic frequency control circuit applicable to a mobile communication system |
| 10/10/1996 | WO1996031944A1 In-phase and quadrature sampling circuit |