Patents
Patents for H04B 7 - Radio transmission systems, i.e. using radiation field (186,426)
03/1988
03/29/1988CA1234604A1 Electronic circuit capable of stably keeping a frequency during presence of a burst
03/24/1988WO1988002200A1 Power control system for very-small-aperture-terminal
03/23/1988EP0260696A2 Subsidiary station capable of automatically adjusting an internal delay in response to a number signal received in a downward signal by the subsidiary station
03/23/1988EP0260442A2 Satellite transmission device
03/22/1988US4733402 Adaptive filter equalizer systems
03/16/1988EP0259315A1 Communication system
03/15/1988US4731870 Platform transmitter terminal (PTT) for use with an ARGOS type satellite system and utilizing a solar array/rechargeable battery power source
03/15/1988US4731866 Transmission power control system in a satellite communication
03/15/1988US4731814 Computer-controlled cordless telephone
03/15/1988US4731812 Installation with portable, wireless telephone sets
03/15/1988US4731783 Method and system for time division multiple access satellite telecommunications
03/10/1988WO1988001392A3 Ranging and processing satellite system for mobile surveillance and data link
03/09/1988EP0259129A2 Portable radio communication apparatus having diversity reception function
03/09/1988CN87104106A Interactive television and data transmission system
03/08/1988US4730310 Terrestrial communications system
03/08/1988US4730305 Fast assignment technique for use in a switching arrangement
03/08/1988CA1233880A1 Method of communications between register-modelled radio devices
03/02/1988EP0257634A2 Synchronisation burst transmit phase control system
03/02/1988EP0257110A1 Digital cellular system
03/01/1988CA1233525A1 Method for improving the reliability of data transmission over rayleigh fading channels
02/1988
02/25/1988WO1988001457A1 Satellite communications system having frequency addressable high gain downlink beams
02/25/1988WO1988001456A1 Satellite communications system employing frequency reuse
02/25/1988WO1988001455A2 Filter interconnection matrix
02/25/1988WO1988001454A1 Satellite communications system having multiple downlink beams powered by pooled transmitters
02/25/1988WO1988001441A1 Beam-forming network
02/25/1988WO1988001392A2 Ranging and processing satellite system for mobile surveillance and data link
02/25/1988WO1988000417A3 Method and installation for digital communication, particularly between and toward moving vehicles
02/25/1988DE3627863A1 Wireless sound transmission
02/24/1988EP0256595A2 Method and circuit arrangement for assuring the bit synchronization of a data block in a receiver
02/23/1988US4727590 Mobile radio communication system with repeater station grid
02/23/1988US4727568 Unit for preventing an interception of a radio communication signal transmitted between a fixed facility and a mobile station
02/23/1988US4727534 Timing and carrier recovery in dual polarization communications systems
02/17/1988EP0255838A1 Signal processing system
02/16/1988US4726073 Receiver including a multipath transmission detector
02/16/1988US4726052 Radio telephone system and method for controlling same
02/16/1988US4726040 Burst demodulator
02/16/1988US4726027 Data retransmitting method in communication network
02/16/1988CA1232986A1 Supervising and controlling system for a communication station in a tdma communication system
02/16/1988CA1232949A1 System for broadcasting of data, particularly to mobile stations
02/10/1988EP0255628A2 Handoff apparatus and method with interference reduction for a radio system
02/09/1988US4724537 Method and apparatus for managing the use of an electronic lock for a mobile radio telephone
02/09/1988US4723737 Process and device for transmitting data between vehicles moving over a track
02/03/1988EP0255048A2 Portable radio telephone having power saver
02/02/1988US4723321 Techniques for cross-polarization cancellation in a space diversity radio system
02/02/1988US4723304 Mobile station and a mobile radio communication network in which electric power is saved without reduction of an activity ratio of radio communication channels
02/02/1988US4723127 Automobile antenna system
02/02/1988CA1232327A1 Precipitation loss compensation and disablement for avoidance of satellite transponder overloading
01/1988
01/26/1988US4722093 Arrangement for detecting bursts
01/26/1988US4722083 Satellite telecommunications system featuring multi-beam coverage and dynamically controlled allocation of the satellite transmission capacity
01/26/1988CA1232025A1 Frequency control for point to multipoint radio
01/20/1988EP0253039A1 Method and apparatus for the protection against echos in a modem
01/20/1988CN87103632A Combined up and down feed network for a communication satellite antenna
01/19/1988US4720873 Satellite audio broadcasting system
01/14/1988WO1988000417A2 Method and installation for digital communication, particularly between and toward moving vehicles
01/14/1988DE3621679A1 Method and device for selecting the channel suitable for reception in wireless microphone systems
01/13/1988CN87201819U Low voltage transceiver and remote controller
01/13/1988CN86103475A Common frequency relay enlarges f.m. tv. transmitter
01/12/1988CA1231429A1 Rf telemetric system
01/12/1988CA1231383A1 Two-way personal message system with extended coverage
01/07/1988EP0250621A1 Method for information transmission between a central data radio station and a plurality of mobile stations on a single carrier frequency
01/05/1988US4718108 Improved multiple site communication system
01/05/1988US4718066 Self-adaptive hybrid data transmission
12/1987
12/29/1987CA1230928A1 Frequency management system
12/23/1987EP0250105A1 Radio location and apparatus
12/23/1987EP0249951A1 Roadside beacon system
12/22/1987US4715048 Frequency offset diversity receiving system
12/22/1987US4715033 State information communication in a TDMA satellite communication network with high frame availability
12/22/1987US4715029 FDMA communications channel synchronizer
12/22/1987US4714923 Method and apparatus for shedding load in a communications controller of a data communications system
12/22/1987CA1230648A1 Cellular voice and data radiotelephone system
12/17/1987WO1987007770A1 Diversity aerial system
12/17/1987EP0231259A4 Nationwide radio paging system.
12/16/1987CN86209581U High gain integrated circuit frequency-modulating receiver
12/15/1987US4713809 Time division multiple access radio communications system
12/09/1987EP0248351A2 Cordless telephone system
12/08/1987US4712229 Multiple access radio telephone system selectively operating on full-duplex and half-duplex modes
12/08/1987US4712212 Terminal control device for reference station in TDMA satellite communication system
12/03/1987WO1987007439A1 Combined uplink and downlink satellite antenna feed network
12/02/1987EP0247186A1 Power control system for satellite communications
12/02/1987EP0115528B1 Method and apparatus for assigning duplex radio channels and scanning duplex radio channels assigned to mobile and portable radiotelephones in a cellular radiotelephone communications system
12/02/1987CN87200132U Battery operated small power tv transponder
12/01/1987US4710975 Space diversity reception system having compensation means of multipath effect
12/01/1987US4710945 Signal selection by statistical comparison
12/01/1987US4710944 Dual transmit-receive space diversity communication system
11/1987
11/25/1987EP0246226A1 Pointing compensation system for spacecraft instruments.
11/24/1987US4709403 Apparatus for controlling output power of transmitter
11/24/1987US4709402 Method of synchronizing radio transmitters for synchronous radio transmission
11/24/1987US4709401 Method of setting radio transmitters for synchronous radio transmission
11/19/1987WO1987007109A1 Interactive television and data transmission system
11/17/1987CA1229437A1 Space diversity communications system for multi- direction time division multiplex communications
11/17/1987CA1229436A1 Multidirection multiplex communication systems
11/11/1987EP0245077A2 TDMA communication system having common local path medium and local time slot for intraoffice calls
11/11/1987EP0245024A2 Radio communication system with power saving disablement prior to call handling processes
11/11/1987EP0244872A2 Base station capable of monitoring occurrence of interference on every transmission
11/11/1987EP0244779A1 Adaptive depolarization interference compensator
11/11/1987CN87103288A Method and device for building up connection in shortwave radio networks
11/11/1987CN86103152A Remote dialing apparatus for joining common-frequency simplex radio telephone into automatic duplex wire telephone network
11/10/1987US4706243 Single-channel-per-carrier communication system including a voice-activated transmission power controller
11/10/1987US4706239 Communications satellite repeater
11/10/1987CA1229185A1 High-speed burst signal monitoring device