Self-equalizing coherent optical RF memory

Details Self-equalizing coherent optical RF memory Self-equalizing coherent optical RF memory

1990-04-09

1991-07-16

Barron, Jr., Gilberto

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

Radar ew

Ecm

307521, 365 63, 365 76, G01S 738, G11C 1304, H03H 1112

Patent

active

050328395

ABSTRACT:
A coherent optical RF memory has an input circuit for receiving RF input signals having wideband frequency content. An electronically tuned frequency selector selects from the RF input at least one desired RF signal having a desired frequency content for storing in memory. A first transducer responsive to the frequency selector converts the at least one desired RF signal into an optical signal representative of the RF signal. The optical signal is stored in an optical storage device. A second transducer responsive to the optical storage device converts the stored optical signal back to an RF signal, forming a recirculating loop. The desired signal is automatically self-equalized as it recirculates in the loop in order to avoid oscillation while maintaining signal coherency. The desired signal may be used for jamming or deception in electronic warfare (EW) or electronic intelligence (ELINT) systems.

REFERENCES:
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patent: 3742259 (1973-06-01), Donald et al.
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patent: 4743905 (1988-05-01), Wiegand
patent: 4903029 (1990-02-01), Newberg et al.
"EW System Applies Deceptive Countermeasures", Microwaves, vol. 18, No. 1, Jan. 1979, p. 91.

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