Research/Patents/US 5008677
US 5008677

ANTI-JAMMING DEVICE FOR A RADAR PROVIDED WITH A REFLECTOR ANTENNA

Assignee

Filed

Jul 7, 1977

Granted

Apr 16, 1991

Location

Abstract

A reflector of an antenna in a radar system subject to jamming carries a multiplicity of localized phase shifters which are sequentially controlled by a processor to introduce certain phase modifications into incoming signals reflected toward an associated radiator. The processor, operating on branched-off portions of the incoming signals, compares the magnitudes of the signals received in the several operational states of each phase shifter and maintains that operational state for which the signal level is at a minimum. The comparisons may be carried out on signals received at the end of a signal-transmission cycle, lacking a useful component.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Jul 15, 1982

Rescinded

May 11, 1990

Duration

7 years, 10 months

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records