Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 7 - Radio transmission systems, i.e. using radiation field
Patents for H04B 7 - Radio transmission systems, i.e. using radiation field (186,426)
04/1981
04/08/1981EP0026328A2 Demand assignment method and system for a time division multiple access satellite communication network
04/07/1981US4261056 Equalizing signal combiner
04/07/1981US4261054 Real-time adaptive power control in satellite communications systems
04/01/1981EP0026085A1 Satellite communication system
03/1981
03/31/1981US4259741 Satellite relay system
03/18/1981EP0025217A1 Clock recovery circuit for burst communications systems
03/17/1981US4256925 Capacity reallocation method and apparatus for a TDMA satellite communication network with demand assignment of channels
03/17/1981CA1097741A1 Mobile radio communication system
03/13/1981EP0020606A4 A system for the communication of radio signals.
03/10/1981US4255816 Receiving apparatus having a plurality of antennas
03/10/1981US4255814 Simulcast transmission system
03/10/1981CA1097108A1 Holographic optical satellite communication system
02/1981
02/24/1981US4253193 Tropospheric scatter radio communication systems
02/24/1981US4253191 Straight-through-repeater
02/24/1981US4252999 Signaling and ranging technique for a TDMA satellite communication system
02/19/1981WO1981000495A1 Single sideband receiver with pilot-based feed forward correction for motion-induced distortion
02/18/1981EP0023948A1 Circuit arrangement for the receiving station of a diversity communication line
02/17/1981US4251865 Polling system for a duplex communications link
02/17/1981US4251801 Mobile data communication system
02/17/1981US4251783 Variable resonance type amplitude equalizing circuit
02/17/1981US4251782 Multiple tuned circuit correction apparatus
02/11/1981EP0023605A1 Wireless communication system
02/11/1981EP0023562A1 Common wave radio network
02/11/1981EP0023511A1 Process and device for detecting and interpreting a distress signal.
02/05/1981WO1981000333A1 Equalizing signal combiner
01/1981
01/27/1981US4247857 Method for controlling an antenna of an earth station for telecommunication via satellites
01/21/1981EP0022453A1 Method of avoiding interference disturbances in radio transmission to a mobile transmit/receive apparatus situated in the radiofield of two synchronous or quasi-synchronous common frequency transmitters, and device for carrying out the method
01/20/1981US4246656 Diversity switch correlation system
01/20/1981US4246655 Circuit for providing an indication of signal/noise ratio in a selector diversity system
01/20/1981CA1094162A1 Traffic switching in communications satellites
01/08/1981WO1981000034A1 A technique for increasing the rain margin of a communication system
01/07/1981EP0020893A1 Radio network
01/07/1981EP0020606A1 A system for the communication of radio signals.
12/1980
12/30/1980US4242753 Radio transmitter time out timer
12/30/1980US4242661 Device for registration of objects
12/23/1980CA1092261A1 Two-way radio transmission system between a main station and secondary stations
12/10/1980EP0019746A1 Directional radio relay system for large communal antenna systems
12/02/1980CA1090885A1 Multi-channel radio relay systems
11/1980
11/25/1980US4236255 Rack entry vehicle communication system
11/18/1980US4234959 Dual threshold repeater squelch circuit
11/18/1980CA1089963A1 Digital time division switching arrangement
11/11/1980US4233576 Automatic polarization decoupling network
11/04/1980US4232399 Continuously variable phase shift network
11/04/1980US4232392 Radio transmission systems
11/04/1980US4232389 Receiver for satellite navigational positioning system
11/04/1980US4232321 Multiple beam satellite antenna with preferred polarization distribution
11/04/1980US4232318 Duplex microwave radio communication system
11/04/1980US4232266 Technique for sharing a plurality of transponders among a same or larger number of channels
11/04/1980US4232197 Processor for a TDMA burst modem
11/04/1980CA1089016A1 Communication system interface circuit
10/1980
10/29/1980EP0017707A1 Automatic receiver selecting arrangement for central radio stations
10/28/1980US4231114 Synchronizing means for a two-way communication system
10/28/1980US4230989 Communications system with repeater stations
10/28/1980CA1088632A1 Space diversity receiving system with phase- controlled signal combining at intermediate frequency stage
10/28/1980CA1088630A1 Diverstity system
10/28/1980CA1088628A1 Antenna array for a cellular rf communications system
10/21/1980US4229822 Data detector for a data communication system
10/21/1980US4229620 Mobile radiotelephone station two-way ranging system
10/15/1980EP0017597A1 Satellite earth observation system
10/15/1980EP0017037A1 Assembly of at least two directionally and/or omnidirectionally inclined antennas coupled to a power dividing device
10/15/1980EP0016783A1 Surface acoustic wave unique word detector and coherent demodulator.
10/14/1980US4228538 Real-time adaptive power control in satellite communications systems
10/14/1980US4228401 Communication satellite transponder interconnection utilizing variable bandpass filter
10/09/1980EP0016783A4 Surface acoustic wave unique word detector and coherent demodulator.
10/07/1980CA1087251A1 Power control on satellite uplinks
09/1980
09/30/1980CA1086655A1 Audio signal quality indicating circuit
09/23/1980US4224473 TDMA Multiplexer-demultiplexer with multiple ports
09/16/1980US4223405 Multitransmitter digital signaling system
09/16/1980US4223404 Apparatus for recycling complete cycles of a stored periodic signal
09/16/1980US4223312 Directive radio communication transmission system for maintaining the alignment of transmission and receiver antenna
09/16/1980CA1085954A1 Sectored antenna receiving system
09/09/1980US4222118 Intelligent automatic gain control circuit
09/09/1980CA1085463A1 Satellite communication system with improved conference facility
09/03/1980EP0015041A1 Telecommunication system of the mobile radio type
09/03/1980EP0014750A1 System with several radiotelephones for changing over from "alternating duplex communication" to "two-way speech communication"
09/02/1980US4220923 Adaptive interference reduction system for crosstalk cancellation in a dual polarization system
09/02/1980CA1085003A1 Carrier synchronization system for coherent phase demodulators
08/1980
08/26/1980CA1084592A1 System for compensating cross-polarized waves
08/19/1980US4218772 Locked-oscillator repeater with modulation frequency feedback
08/19/1980US4218656 Arrangement for the remote transmission of information for the remote guidance of vehicles which are subject to severe acceleration
08/19/1980US4218654 Space diversity system in TDMA communication system
08/12/1980US4217586 Channel estimating reference signal processor for communication system adaptive antennas
08/07/1980WO1980001631A1 Process and device for detecting and interpreting a distress signal
08/06/1980EP0013706A1 System for automatically monitoring the charging state of the mains independent power supply and the humidity in the responder of a vehicle location system
08/05/1980US4216496 Apparatus for detecting and measuring interference in transmission signals
08/05/1980US4216428 Pulse signal receiving system employing space diversity
08/05/1980CA1083226A1 Method of assigning a radio channel to a calling mobile body of mobile communication system and radio channel assigning system therefor
08/05/1980CA1083225A1 Apparatus for establishing communication between a first radio transmitter and receiver and a second radio transmitter and receiver
08/05/1980CA1083224A1 Apparatus for indicating synchronization and out-of- synchronization conditions
08/05/1980CA1083223A1 Apparatus for indicating synchronization of a radio receiver with a radio transmitter
07/1980
07/29/1980US4215370 Satellite video multiplexing communications system
07/29/1980US4215348 Method of and system for synchronizing data reception and retransmission aboard communication satellite
07/29/1980US4215244 Self-adaptive mobile subscriber access system employing time division multiple accessing
07/29/1980US4214807 Holographic optical satellite communication system
07/23/1980EP0013521A1 Transmitting device for coded track circuits
07/23/1980EP0013316A1 Radiotelephone network with a main station, at least two relay stations working on the same radio channel and a plurality of substations
07/22/1980US4214244 Null pattern technique for reduction of an undesirable interfering signal
07/22/1980US4214213 Signal selecting system
07/22/1980US4214205 Radio receiving and retransmitting apparatus with frequency lock circuit
07/22/1980CA1082313A1 Transmitter/receivers
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