Microwave shield

Details Microwave shield Microwave shield

1990-07-19

1992-04-07

Anderson, Bruce C.

Radiant energy

Radiation controlling means

Shields

359240, G21F 100

Patent

active

051031035

ABSTRACT:
A switchable shield which precludes transmission or receipt of radio frequency or microwave energy. The shield comprises a substrate of highly transmissive material with an active film layer disposed on the substrate. This active film layer is switchable upon heating from a high transmissivity, high resistivity mode which permits transmission or receipt of rf or microwave radiation, to a low transmissivity, low resistivity mode which precludes transmission or receipt of rf or microwave radiation through the shield.

REFERENCES:
patent: 3834793 (1974-09-01), McConnell et al.
patent: 4283113 (1981-08-01), Eden
patent: 4393095 (1983-07-01), Greensburg
patent: 4421985 (1983-12-01), Billingsley et al.

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