发明名称 |
RF-transparent antenna sunshield membrane |
摘要 |
An RF-transparent sunshield membrane covers an antenna reflector such as a parabolic dish. The membrane includes at least two dielectric sheets of polyimide film 1 mil thick. The surface of the outer film facing away from the reflector is coated with an electrically semiconductive coating such as vapor-deposited germanium having a thickness in the range of 200 ANGSTROM to 600 ANGSTROM . A member, such as a glass fiber mat, may be located in the space between the two dielectric sheets for maintaining the sheets in spaced-apart relationship. 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.
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申请公布号 |
US5373305(A) |
申请公布日期 |
1994.12.13 |
申请号 |
US19930051510 |
申请日期 |
1993.04.22 |
申请人 |
MARTIN MARIETTA CORPORATION |
发明人 |
LEPORE, JR., ALBERT;WONG, HAMILTON;MARR, SUSAN L.;AMORE, LEO J. |
分类号 |
H01Q1/00;H01Q1/42;(IPC1-7):H01Q1/42;H01Q1/28;H01Q1/40 |
主分类号 |
H01Q1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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