Communications: radio wave antennas – Antennas – With housing or protective covering
Patent
1990-12-05
1994-02-01
Hille, Rolf
Communications: radio wave antennas
Antennas
With housing or protective covering
343DIG2, H01Q 14, H01Q 128
Patent
active
052835928
ABSTRACT:
An RF-transparent sunshield membrane covers an antenna reflector such as a parabolic dish. The blanket includes a single dielectric sheet 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 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, which in turn is coated with a white paint. 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.
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Bouquet et al., Ground Radiation Tests and Flight Atomic Oxygen Tests of Ito Protective Coatings for Galileo Spacecraft, IEEE Trans. on Nuclear Science, vol. NS-33, No. 6, Dec., 1986, pp. 1408-1412.
C. Bowman et al., Ito-Coated RF Transparent Materials for Antenna Sunshields-Space Environment Effects, IEEE Trans. on Nuclear Science, vol. 37, No. 6, Dec. 1990, pp. 2134-2137.
Bogorad Alexander
Bowman, Jr. Charles K.
Dottore Frank A.
Meder Martin G.
Berard C. A.
Brown Peter T.
General Electric Co.
Hille Rolf
Meise W. H.
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