Multiplex communications – Communication over free space – Repeater
Patent
1997-08-22
2000-09-19
Hsu, Alpus H.
Multiplex communications
Communication over free space
Repeater
370342, 370346, 455 121, H04J 1300, H04B 1500
Patent
active
061222615
ABSTRACT:
A communication network includes multiple mini-hub terminals for transmitting and receiving information from multiple remote terminals. Some of the multiple mini-hub terminals, and some of the multiple remote terminals are capable of wireless communication respectively with each other through satellite communication means. A co-located terminal is hard wire connected with at least some of the mini-hub terminals. At least some of the terminals includes a flat antenna comprising a ground plane and a substrate forming at least one in flat array antenna mounted relative to the ground plane. The flat array antenna has multiple spaced dipoles formed on the substrate to constitute the array, and a transmission line formed on the substrate connecting the spaced dipoles. The transmission line is for connection with a link to a terminal with which communication is to be affected by signals through the antenna. A mobile antenna has beam steering lenses for forcing the signal. Also provided are sensors located on power transmission lines, the sensor being capable of measuring travelling waves on the lines, and communicating via an array antennal through a satellite at KU, KA-band or L-band frequencies, characteristics of the travelling wave thereby to facilitate fault location on the transmission lines.
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Ellis, Jr. Haynes
Fernandes Roosevelt A.
Krabbe Kurt P.
Hsu Alpus H.
Southern California Edison Company
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