Antenna sunshield membrane.

摘要

An RF-transparent sunshield membrane (324) covers an antenna reflector such as a parabolic dish. The blanket includes a single dielectric sheet (310) of polyimide film 1/2-mil thick. The surface of the film facing away from the reflector is coated with a transparent electrically conductive coating (316) such as vapor-deposited indium-tin oxide. The surface of the film facing the reflector is reinforced by an adhesively attached polyester or glass mesh (312), which in turn is coated with a white paint (314). In a particular embodiment of the invention, polyurethane paint is used. In another embodiment of the invention, a layer of paint primer is applied to the mesh under a silicone paint, and the silicone paint is cured after application for several days at room temperature to enhance adhesion to the primer.