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Filing date
Publication date
Application filedfiledCritical
Publication of BE440881ApublicationCriticalpatent/BE440881A/xx
H04B7/00—Radio transmission systems, i.e. using radiation field
H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04B—TRANSMISSION
H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
H04B1/40—Circuits
H04B1/54—Circuits using the same frequency for two directions of communication
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L25/00—Baseband systems
H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
H04L25/20—Repeater circuits; Relay circuits
H04L25/24—Relay circuits using discharge tubes or semiconductor devices