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US 5,847,672 AGranted
Electronic baffle and baffle controlled microwave devices
AssigneeMcDonnell Douglas Corporation
InventorJesse Clopton James
Life of this patent
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Abstract
Microwave devices incorporate at least one photosensitive baffle that is selectively illuminated changing the baffle's electronic characteristic from being transparent to being reflective of microwave energy. The baffle serves as a gate, tuning element, reflector and the like. Various forms of photosensitive baffles and microwave devices are presented.
Claims4
A composition of material exhibiting variable dielectric properties comprising;
- a three dimensional body of dielectric material;
- photosensitive material, said photosensitive material having a predetermined electrical conductivity in the absence of illumination and another electrical conductivity during exposure to illumination;
- said photosensitive material being dispersed throughout said dielectric material;
- and
- said dielectric material being at least translucent to light for permitting light originating external of said body to pass through a portion of said body of dielectric material to said photosensitive material, wherein said body exhibits a dielectric constant of a predetermined value in the absence of incident illumination and another value during the presence of such illumination.
2 more elements
Dependencies are inferred from the claim text.