Optically controlled phased array system and method

DETAILED DESCRIPTION It is an object of this invention to provide an improved optically controlled phased array antenna system and method which utilizes the advantages of fiber optic lengths both for signal transmission and for introducing desired true time delays.
It is another object of this invention to provide an improved phase array system which saves space and provides improved beam steering control capability at high frequencies by utilization of fiber optic lengths and piezo-electric or equivalent control elements.
In accordance with the above objects, there is provided an improved optically controlled phased array antenna system and method wherein predetermined time delays are introduced into the signal delivered to each antenna element by stretching the fiber optic link which feeds such element, the stretching being done with a controlled electro-mechanical element such as a piezo-electric crystal.
A control potential is applied to each respective piezo-electric crystal to generate respective time delays for producing beam steering in accordance with a predetermined pattern.