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)
05/1979
05/29/1979US4156873 Transponder for a moving vehicle tracking system
05/29/1979US4156867 Data communication system with random and burst error protection and correction
05/22/1979CA1055172A1 Satellite communications system
05/15/1979US4155039 Two-way transmission system between a main station and secondary stations
05/15/1979CA1054732A1 Satellite data transmission systems
05/15/1979CA1054731A1 Satellite communications systems
05/15/1979CA1054688A1 Adaptive amplitude equalizer
05/01/1979US4152651 Method for detecting the code-phase coincidence in an SSMA receiver
05/01/1979US4152647 Rapidly deployable emergency communication system
04/1979
04/17/1979US4150335 Highly reliable distribution control unit with improved control capability
04/17/1979US4150334 Control circuit for a radio repeater
04/10/1979US4149121 Four phase to two phase correlator
04/03/1979US4147894 Time division multiplex communication device comprising a switching matrix between C/E buffers and control circuits
03/1979
03/27/1979US4146893 System for compensating for cross polarization coupling
03/27/1979US4146838 System for detecting by a first pilot and a group of second pilots correlated to the first a frequency and/or phase difference between relayed carriers
03/27/1979CA1051520A1 Sf signaling system for radio frequency repeaters
03/20/1979US4145658 Method and apparatus for cancelling interference between area coverage and spot coverage antenna beams
03/20/1979US4145573 Digital satellite system and method for serving users of differing capacities
03/13/1979US4144497 Two-way communications system having remote channel selection
03/13/1979US4144496 Mobile communication system and method employing frequency reuse within a geographical service area
03/13/1979US4144495 Satellite switching system
03/13/1979US4144412 Method of assigning a radio channel to a calling mobile body of mobile communication system and radio channel assigning system therefor
03/06/1979US4143241 Small digital time division switching arrangement
02/1979
02/27/1979US4142155 Diversity system
02/20/1979US4140973 Channel evaluation apparatus for point-to-point communications systems
02/13/1979CA1048664A1 Radiotelephone system
01/1979
01/16/1979US4135156 Satellite communications system incorporating ground relay station through which messages between terminal stations are routed
01/16/1979US4135060 Circuit arrangement for a time division multiplex communication system for the channel by channel combination at the receiving end of information transmitted in the form of multiframes
01/16/1979US4135059 Multiple channel per burst tdma multiple transponder network
01/16/1979CA1046669A1 Spread spectrum communication techniques for a code division message multiplexing system
01/09/1979US4134118 Aircraft antenna-switching arrangements
01/09/1979US4134071 SSMA Data transmission system
01/09/1979US4134069 Single side band multiplex signal radio relay
01/09/1979US4134068 Transmitter/receivers
01/02/1979CA1045730A1 Acquisition system for the sdma/tdma satellite communication system
12/1978
12/26/1978US4131849 Two-way mobile radio voice/data shared communications system
12/21/1978WO1978000018A1 A digital time division switching arrangement
12/20/1978EP0000039A1 A data transmission process and system to permit substantial reduction of interference between a received first and second digital signal
12/20/1978EP0000038A1 Method and apparatus for cancelling interference between area coverage and spot coverage antenna beams
12/19/1978CA1044826A1 Telephone system comprising a satellite
12/12/1978US4129755 Frame synchronizing system for TDMA radio communications
12/05/1978US4128740 Antenna array for a cellular RF communications system
11/1978
11/28/1978US4127744 Mobile radio communication system
11/21/1978CA1042989A2 Radio telephone system
11/14/1978CA1042576A1 Transmit phase control system of synchronization burst for sdma/tdma satellite communication system
10/1978
10/31/1978US4123718 SSMA receiver with synchronous demodulation and variable gain control
10/24/1978US4122393 Spread spectrum detector
10/24/1978CA1041235A1 Method and circuit arrangement for synchronizing the pulse frames in data transmission by the time multiplex process via telecommunication satellites
10/24/1978CA1041234A1 Receiver for electric oscillations modulated by ssma technique
10/24/1978CA1041199A1 Homodyne communication system
10/17/1978US4121217 Data transmission network interface unit
10/17/1978US4121159 Method for the synchronization of a transmission path
10/10/1978US4119964 Systems and methods for determining radio frequency interference
10/10/1978US4119926 Apparatus and method for stabilized phase detection for binary signal tracking loops
10/10/1978CA1040329A1 Telephone system comprising a satellite
10/03/1978US4118598 Amplitude modulated impatt diode oscillator and a low cost communication system using same
09/1978
09/26/1978US4117405 Narrow-band radio communication system
09/26/1978US4117267 System for two-way communication between a master station and a plurality of substations via a satellite
09/26/1978CA1039362A2 Radio telephone system
09/19/1978US4115661 Single channel per burst TDMA multiple transponder network
09/19/1978CA1038976A1 Time division multiple access satellite communications system
09/19/1978CA1038932A1 Reliable earth terminal for satellite communications
09/05/1978US4112498 Digital correlation receiver
09/05/1978US4112372 Spread spectrum communication system
09/05/1978US4112370 Digital communications receiver for dual input signal
08/1978
08/22/1978US4109202 Traffic switching in communications satellites
08/22/1978US4109100 Reverberation compensating communication system
08/22/1978CA1037167A1 Synchronisation system
08/15/1978US4107609 Communications transponder
08/15/1978US4107608 Method and apparatus for burst synchronization in a time division multiple access communication system
08/08/1978US4106022 Radio position-determining system
08/08/1978US4105977 Adaptive undesired signal canceller
08/08/1978US4105973 Multibeam, digitally modulated, time division, switched satellite communications system
07/1978
07/18/1978US4101836 Sectored antenna receiving system
07/11/1978US4100499 Carrier synchronization system for coherent phase demodulators
07/11/1978US4100496 Ghost cancellation device
07/04/1978US4099121 Spatial diversity satellite communications system with error control
06/1978
06/27/1978US4097809 Local event broadcast system
06/27/1978US4097808 Entertainment system and method
06/27/1978US4097804 Transmitting and receiving diversity system
06/27/1978US4097010 Satellite connected by means of a long tether to a powered spacecraft
06/13/1978US4095226 System for communication
06/13/1978US4095047 Phase regulating circuit
05/1978
05/30/1978US4092601 Code tracking signal processing system
05/30/1978US4092600 Installation for two-way radio communication
05/30/1978US4092598 Stations for radioelectric transmission
05/16/1978US4090137 System for compensating cross-polarized waves to attenuate crosstalk
05/16/1978US4090036 Satellite communications system
05/02/1978US4087818 Lossless network and method for orthogonalizing dual polarized transmission systems
05/02/1978US4087753 Communication apparatus for communicating between a first and a second object
04/1978
04/25/1978US4086537 Time division multiplex communication receiving apparatus
04/18/1978US4085370 Radio receiver having co-channel interference operated squelch
04/04/1978US4083009 High reliability diversity communications system
04/04/1978US4083004 Expendable repeater employing harmonic mixing
03/1978
03/14/1978US4079380 Null steering apparatus for a multiple antenna array on an FM receiver
03/14/1978US4079318 Space diversity receiving system with phase-controlled signal combining at intermediate frequency stage
02/1978
02/14/1978US4074266 System for receiving radio waves through single antenna apparatus
01/1978
01/31/1978US4071828 Self synchronizing convolver system
01/24/1978US4070637 Redundant microwave configuration
01/10/1978US4068104 Interface for in band SCPC supervisory and signalling system
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