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Antennas for Terrestrial Microwave Relay Links
IEICE TRANSACTIONS on Communications
Publication Date: 2003/03/01
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Issue on Historical Review of Antenna Systems in Japan)
terrestrial microwave relay links, path-length lens antenna, reflector antenna, reflector shaping, frequency sharing, space diversity,
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Antennas for Japanese terrestrial microwave relay links have been developed since the1950's and put into commercial use up to now in Japan. In particular, the path-length lens antennas developed in 1953 represents a monumental achievement for terrestrial microwave relay links, and the offset antenna for 256 QAM radio relay links developed in 1989 has the best electrical performance in the world. This paper reviews the antennas for Japanese terrestrial microwave relay links that have historical significance and describes the antenna design technologies developed in Japan.