Smart chaff

Details Smart chaff Smart chaff

2008-05-06

2008-05-06

Black, Thomas (Department: 3661)

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

Radar reflector

Chaff

Reexamination Certificate

active

11067216

ABSTRACT:
A chaff element for interfering with radar signals. The chaff element has a dielectric substrate and a pair of elongate electrically conductive elements, having a total length of approximately one-half wavelength of the radar signals or otherwise tuned to the radar signals, disposed on the dielectric substrate. A switch is arranged to electrically couple the pair of elongate elements together in response to a control signal generated by an oscillator circuit and a battery. The chaff element can be used in a method of providing a countermeasure against radar signals. A plurality of chaff elements can be deployed in an airspace above a radar unit emitting a radar signal and interfere with the radar signal by opening and closing the switches of the chaff elements while deployed in said airspace above the radar unit.

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patent: 6017628 (2000-01-01), Stevens et al.
patent: 6429800 (2002-08-01), Richmond
patent: 6456225 (2002-09-01), Forster
patent: 6513438 (2003-02-01), Fegg et al.
patent: 6628239 (2003-09-01), Hilliard et al.
patent: 2082862 (1982-03-01), None
patent: 09210597 (1997-08-01), None

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