Electrical conducting sheel structure for coaxial collinear arra

Details Electrical conducting sheel structure for coaxial collinear arra Electrical conducting sheel structure for coaxial collinear arra

1994-11-09

1996-03-26

Hajec, Donald T.

Communications: radio wave antennas

Antennas

Active sleeve surrounds feed line

343790, 174 70A, H01Q 904

Patent

active

055024548

ABSTRACT:
A shell structure for a collinear coaxial element array antenna is made of electrical conducting material and includes first and second circular sections separated by a web. The first circular section has an inner diameter that is slightly larger than the diameter of an inner conductor in a coaxial line element of the array antenna, while the second circular section has an inner diameter that is equal to that of an outer conductor of a coaxial transmission line element. The separations of the centers of the first and second circular sections are established by the wed to be equal to the distance between the centers of two adjacent coaxial transmission line elements in the array antenna. The inner conductor of a coaxial transmission line element is inserted in the first circular section and is electrically connected thereto. This electrically connects the inner conductor of one coaxial transmission line element to the second circular section, which serves as the outer conductor of a coaxial transmission line element that is adjacent to the one coaxial transmission line element, thereby electrically connecting the inner conductor of the one coaxial transmission line element to the outer conductor of its adjacent coaxial transmission line element.

REFERENCES:
patent: 2115761 (1938-05-01), Blumlein
patent: 4378462 (1983-03-01), Arnold, Jr. et al.
patent: 4400702 (1983-08-01), Tanaka
patent: 4983987 (1991-01-01), Woloszczuk
patent: 5095176 (1992-03-01), Harbrecht et al.
patent: 5285211 (1994-02-01), Herper et al.

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