Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1986-09-05
1989-03-21
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342375, 342368, H01Q 336
Patent
active
048147745
ABSTRACT:
An optically controlled phased array antenna system and method of operating same utilizing fiber optic transmission lengths and controlled piezo-electric crystals or equivalent elements to introduce predetermined time delays into each light signal by controlling the respective length of each fiber optic link. The light carrying fibers are wrapped around the respective crystals in accordance with a pattern to introduce time delays corresponding to the amount of stretch given to the fiber by the energized crystals. Beam scanning is achieved by controlling the matrix of crystals to introduce appropriate time delays into the optical signals which drive the respective antenna elements.
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patent: 4620193 (1986-10-01), Heeks
Arnold M. Levine, Use of Fiber Optic Frequency and Phase Determining Elements in Radar 5/30/79 pp. 437-440.
Blum Theodore M.
Hellner Mark
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