| Patents for H03D 7 - Transference of modulation from one carrier to another, e.g. frequency-changing (7,673) |
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| 10/15/1997 | CN1162222A Local signal generator |
| 10/14/1997 | US5678226 Unbalanced FET mixer |
| 10/14/1997 | US5678225 Direct-coupled active balanced mixer |
| 10/14/1997 | US5678224 Mixer circuit |
| 10/14/1997 | US5678222 Modulation and frequency conversion by time sharing |
| 10/14/1997 | US5678220 Device for rejection of the image signal of a signal converted to an intermediate frequency |
| 10/12/1997 | CA2202317A1 Radio transmitter apparatus |
| 10/08/1997 | EP0800314A1 Receiver for programmes broadcast by a satellite or an MMDS-station |
| 10/08/1997 | EP0800283A2 Transmitter/receiver for transmitting and receiving of an RF signal in two frequency bands |
| 10/08/1997 | EP0799523A1 Receiver circuit |
| 10/08/1997 | EP0799522A1 Image-reject mixers |
| 10/01/1997 | CN1161116A Automatic tuning of a radio transceiver |
| 09/25/1997 | WO1997035412A1 Method and apparatus for routing a digitized rf signal to a plurality of paths |
| 09/25/1997 | WO1997035381A1 Reducing or eliminating radio transmitter mixer spurious outputs |
| 09/24/1997 | EP0797311A2 Multiple-band mobile transceiver having a smaller number of local oscillators |
| 09/24/1997 | EP0797304A2 Improvements in or relating to radio receivers |
| 09/24/1997 | EP0797104A2 Monostatic homodyne radar system |
| 09/18/1997 | WO1997034367A1 A high conversion gain cmos mixer |
| 09/17/1997 | EP0795957A1 Device comprising a passive, 180 degree phase-shifting coupling circuit |
| 09/17/1997 | EP0795954A1 Apparatus comprising a ring mixer |
| 09/16/1997 | US5669067 Remotely controllable variable intermediate frequency transceiver |
| 09/16/1997 | US5668701 Up-down tuner having a grounding plate provided with generally L-shaped soldering portions |
| 09/16/1997 | CA2089259C Transient suppression circuit for a time domain duplex transceiver |
| 09/12/1997 | WO1997033382A1 An improved gps receiver utilizing a communication link |
| 09/10/1997 | EP0794613A1 Low noise-high linearity HEMT-HBT composite |
| 09/04/1997 | WO1997032404A1 Apparatus and method for digitizing and detecting a received radio frequency signal |
| 09/02/1997 | US5663734 GPS receiver and method for processing GPS signals |
| 08/27/1997 | EP0792052A1 Local signal generator |
| 08/26/1997 | US5661761 Quasi-synchronous detection and demodulation circuit and frequency discriminator used for the same |
| 08/20/1997 | EP0789953A1 Automatic tuning of a radio transceiver |
| 08/19/1997 | US5659894 Dual-channel low current low noise block downconverter |
| 08/19/1997 | US5659546 Wideband frequency signal digitizer and method |
| 08/13/1997 | EP0789450A2 An efficient RF CMOS amplifier with increased transconductance |
| 08/13/1997 | EP0789449A2 Distortion-free switching signal mixer |
| 08/12/1997 | US5657344 Transmitting/receiving signal processing circuit in digital cordless telephone |
| 08/07/1997 | CA2196938A1 Distortion-free chopper-based signal mixer |
| 08/05/1997 | US5654674 Oscillator control circuit with phase detection feedback |
| 07/30/1997 | EP0786168A1 Wide band radio-frequency converter having multiple use of intermediate frequency translators |
| 07/24/1997 | WO1997026710A1 Method and apparatus for selecting from multiple mixers |
| 07/23/1997 | EP0785641A2 Digital signal processing system |
| 07/22/1997 | US5650743 Common mode controlled signal multiplier |
| 07/22/1997 | US5650714 Orthogonal signal generation system |
| 07/16/1997 | EP0784381A2 Two band receiver |
| 07/15/1997 | US5649312 MMIC downconverter for a direct broadcast satellite low noise block downconverter |
| 07/15/1997 | US5649288 Dual-function double balanced mixer circuit |
| 07/15/1997 | US5648736 Frequency converting circuit |
| 07/09/1997 | CN1154023A Amplifier having distortion compensation and base station for radio communication using the same |
| 07/02/1997 | EP0782249A1 System and method for rejecting image signals |
| 06/27/1997 | CA2190545A1 System architecture and method for processing signals received over a path |
| 06/26/1997 | WO1997023036A1 Quasi-double balanced passive reflection fet mixer |
| 06/26/1997 | WO1997023035A1 Triple-balanced passive transmission fet mixer |
| 06/26/1997 | WO1997023034A1 Frequency agile modulator |
| 06/26/1997 | WO1997023033A1 Quasi-double balanced dual-transformer passive reflection fet mixer |
| 06/26/1997 | DE19653561A1 Mixer circuit using two diodes |
| 06/25/1997 | EP0780968A1 Multimode radio communications terminal |
| 06/25/1997 | CN1152818A Modulator and used frequency multiplicator thereof |
| 06/24/1997 | US5642071 Transit mixer with current mode input |
| 06/19/1997 | WO1997014049A3 Gps receiver and method for processing gps signals |
| 06/18/1997 | EP0779707A1 RF filter arrangement with image trap |
| 06/18/1997 | EP0779704A1 Image rejection mixer |
| 06/18/1997 | EP0779703A1 Demodulator circuit for a signal, frequency modulated near an intermediate frequency |
| 06/18/1997 | EP0778996A1 Process and device for reshaping pairs of signals |
| 06/18/1997 | EP0704122B1 Process and arrangement for adjusting the local oscillators of a receiver in a multi-channel transmission system |
| 06/17/1997 | US5640699 Mixer constructed from thick film balanced line structure |
| 06/17/1997 | US5640698 Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion |
| 06/17/1997 | US5640697 Wideband multiple conversion receiver system with means for avoiding receiver spurs by combined switching of multiple local oscillator frequencies |
| 06/17/1997 | US5640134 Microwave filter constructed from thick film balanced line structures |
| 06/17/1997 | US5640132 Thick film balanced line structure, and microwave baluns, resonators, mixers, splitters, and filters constructed therefrom |
| 06/16/1997 | CA2192039A1 Mixer device with image frequency rejection |
| 06/12/1997 | WO1997013349A3 Receiver architecture for receiving angle-modulated/scanned carrier signals of different frequency |
| 06/11/1997 | CN1151632A Balanced modulator |
| 06/04/1997 | CN1035092C Transformer circuit, double-balanced mixer |
| 05/29/1997 | WO1997019541A1 Filtering in a receiver that uses log-polar signal processing |
| 05/28/1997 | EP0556269B1 Receiver with automatic frequency control |
| 05/27/1997 | US5634207 Frequency converter capable of reducing noise components in local oscillation signals |
| 05/27/1997 | US5633815 Formatter |
| 05/27/1997 | US5633610 Monolithic microwave integrated circuit apparatus |
| 05/27/1997 | US5633582 Combined signal level meter and leakage detector |
| 05/21/1997 | EP0774832A1 Quadrature demodulator |
| 05/15/1997 | DE19541929A1 Integrated oscillator circuit |
| 05/14/1997 | EP0455711B1 Heterodyne stage having precise closed-loop control of the amplitude of the injection signal thereof |
| 05/14/1997 | CN1149770A Microwave mixing circuit |
| 05/13/1997 | US5630228 Double balanced mixer circuit with active filter load for a portable comunication receiver |
| 05/13/1997 | US5630225 Dielectric resonator image reject mixer and method |
| 05/13/1997 | US5630214 Wide-band receiving apparatus with local oscillating circuit |
| 05/06/1997 | US5628059 DC offset circuit for cartesian loop |
| 05/01/1997 | WO1997008840A3 Common transmit module for a programmable digital radio |
| 04/30/1997 | CN1148913A Improvement in or relating to communications receivers |
| 04/30/1997 | CN1148755A Circuit for synchronous transmitter local oscillator frequency in digital microwave system applied in same wave channel |
| 04/29/1997 | US5625307 Low cost monolithic gallium arsenide upconverter chip |
| 04/24/1997 | DE19610850C1 Monostatic homodyne radar system for vehicle radar and radar sensor, e.g. for level measurement |
| 04/23/1997 | EP0769847A1 Balanced modulator |
| 04/22/1997 | US5623226 Automatic calibration of carrier suppression and loop phase in a Cartesian amplifier |
| 04/17/1997 | WO1997014057A1 A gps receiver and method for processing gps signals |
| 04/17/1997 | WO1997014056A1 Combined gps positioning system and communications system utilizing shared circuitry |
| 04/17/1997 | WO1997014055A1 Method and apparatus for determining the location of an object which may have an obstructed view of the sky |
| 04/17/1997 | WO1997014054A1 Client-server-based remote locator device |
| 04/17/1997 | WO1997014053A1 Improved gps receivers and garments containing gps receivers and methods for using these gps receivers |
| 04/17/1997 | WO1997014049A2 Gps receiver and method for processing gps signals |
| 04/17/1997 | CA2667775A1 Gps receiver and method for processing gps signals |