Antenna beam steering using an optical commutator to delay the l

Details Antenna beam steering using an optical commutator to delay the l Antenna beam steering using an optical commutator to delay the l

1998-05-26

1999-12-14

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

H01Q 322

Patent

active

060023651

ABSTRACT:
An array antenna is steered by changing the time delays of a local oscillator signal feeding a number of mixers, each fed by an individual antenna element. The beat frequency thus produced can be made in-phase by compensating time delays of different antenna elements in the array with different delays from the local oscillator. The delays from the local oscillator are obtained with optical fibers of variable lengths.

REFERENCES:
patent: 4028702 (1977-06-01), Levine
patent: 5325102 (1994-06-01), Page
patent: 5347288 (1994-09-01), Page
patent: 5475392 (1995-12-01), Newberg et al.

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