Flush mounted tacan base station antenna apparatus

Details Flush mounted tacan base station antenna apparatus Flush mounted tacan base station antenna apparatus

1985-04-22

1987-07-21

Sikes, William L.

Communications: radio wave antennas

Antennas

Within conductive apertured wall

343846, 343853, 342399, H01Q 138, H01Q 324

Patent

active

046821813

ABSTRACT:
A flush-mounted radiating antenna is disclosed which can be electronically switched to produce a rotating directional field with no moving parts in the antenna element itself or with the appropriate electronics in the entire mechanism. This is accomplished by utilizing pie-shaped sections on the flush surface which are capacitively coupled to a central feed element and shorting some of the pie-shaped capacitively coupled elements to a ground plane whereby the normally omnidirectional pattern is perturbed to a directional pattern.

REFERENCES:
patent: 4074268 (1978-02-01), Olson
patent: 4287518 (1981-09-01), Ellis
patent: 4510498 (1985-04-01), Mori et al.
patent: 4540988 (1985-09-01), Munk et al.

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