Device for covering the aperture of an antenna

Details Device for covering the aperture of an antenna Device for covering the aperture of an antenna

1997-06-04

1999-05-25

Font, Frank G.

Communications: radio wave antennas

Antennas

Wave guide type

343781R, 343704, 343872, H01Q 1300, H01Q 102, H01Q 142

Patent

active

059073101

ABSTRACT:
A device is indicated for covering the aperture of an antenna having a parabolic reflector and an exciter. The cover is made of a rigid material. The cover includes a shield ring connected to the reflector and a plastic cover shaped like a flat or obtuse cone having a conical portion which closes the open end of the reflector. The wall of the conical portion of the cover forms an angle between 4.degree. and 6.degree. with a plane that is at a right angle to the axis of the shield ring.

REFERENCES:
patent: 4626863 (1986-12-01), Knop et al.
patent: 4689633 (1987-08-01), Saad et al.
patent: 5317328 (1994-05-01), Allen
patent: 5714963 (1998-02-01), Cox
European Conference on Radio Relay Systems, Edinburgh, Oct. 11-14, 1993, Pub. No. 386.
War's das? Die Interstat '95--Apr. 1995, pp. 22-23.
Patent Abstracts of Japan, 4-240902(A), E-1303, Jan. 8, 1993, vol. 17, No. 9.
Patent Abstracts of Japan, 59-21103(A), E-244, May 15, 1984, vol. 8, No. 103.
Patent Abstracts of Japan, 62-274903(A), E-610, May 19, 1988, vol. 12, No. 167.

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