Communications: radio wave antennas – Antennas – With housing or protective covering
Patent
1993-09-03
1994-12-13
Hille, Rolf
Communications: radio wave antennas
Antennas
With housing or protective covering
343909, 343DIG2, H01Q 142, H01Q 128, H01Q 140
Patent
active
053733061
ABSTRACT:
An RF-transparent sunshield membrane covers an antenna reflector such as a parabolic dish. The membrane includes a single dielectric sheet of polyimide film 1 mil thick. The surface of the film facing away from the reflector is coated with a layer of semiconductor material such as vapor-deposited germanium having a thickness in the range of 200 .ANG. to 600 .ANG.. In another embodiment of the invention, the surface of the film facing the reflector may be reinforced by an adhesively attached polyester or glass fiber mesh.
REFERENCES:
patent: 3396400 (1968-08-01), Kelly et al.
patent: 4479131 (1984-10-01), Rogers et al.
patent: 4666760 (1987-05-01), Hasuda et al.
patent: 4741778 (1988-05-01), Horie et al.
patent: 5215824 (1993-06-01), Munro, III et al.
patent: 5273815 (1993-12-01), Brydon et al.
PCT International Search Report PCT/US93/04681 dated Aug. 24, 1993.
"ITO-Coated RF Transparent Materials for Antenna Sunshields-Space Environment Effects," by C. Bowman et al., IEEE Trans. on Nuclear Science, vol. 37, No. 6, Dec. 1990, pp. 2134-2137.
"Usage of ITO to Prevent Spacecraft Charging," by R. D. Goldstein et al., IEEE Trans. on Nuclear Science, vol. NS-29, No. 6, Dec. 1982, pp. 1621-1628.
"A Thermally Opaque, Millimeter-Wave Radome for Space," by M. S. Powell et al., 1986 International Symposium Digest Antennas and Propagation, vol. II, pp. 927-930.
"Combined Radiation Effects on Optical Reflectance of Thermal Control Coatings," by J. Marco et al., 4th Int'l. Conf. on Spacecraft Materials in Space Environment, Sep. 6-9, 1988, pp. 121-132.
"Thermal Control Material & Metalized Films" Part No. Listing and General Specifications by Sheldahl Corporation, Northfield, Minn., Jul. 1989, pp. 1-10, 29 and 61.
Amore Leo J.
Bogorad Alexander
Bowman, Jr. Charles K.
Harris, Jr. Theodore A.
Marr Susan L.
Berard Jr. Clement A.
Brown Peter Toby
Hille Rolf
Martin Marietta Corporation
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