Structure for a dichroic antenna

Details Structure for a dichroic antenna Structure for a dichroic antenna

1985-10-24

1987-10-20

Yasich, Daniel M.

Communications: radio wave antennas

Antennas

Mesh, woven, braided or multiple strip

343781CA, 343909, H01Q 1995, H01Q 1918

Patent

active

047017651

ABSTRACT:
This structure for a dichroic antenna can be used in a reflector antenna capable of operating at the same time at two different frequencies or with two orthogonal polarizations, and presents mechanical characteristics allowing its use on board the satellites. The structure, suitable for a subreflector, comprises a plurality of layers with high mechanical stiffness in the external part, followed by layers with low dielectric constant and one or a plurality of metallic grids in the most internal part, separated by low-dielectric constant layers.

REFERENCES:
patent: 3047860 (1962-07-01), Swallow et al.
patent: 3394378 (1968-07-01), Williams et al.
patent: 4222054 (1980-09-01), Capps
patent: 4272770 (1981-06-01), Miller et al.
patent: 4274098 (1981-06-01), Renearu et al.
patent: 4378561 (1983-03-01), Hibbard et al.
patent: 4387377 (1983-06-01), Kandler
patent: 4490723 (1984-12-01), Hardie et al.
patent: 4599623 (1986-07-01), Havkin et al.

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