Monopole/L-shaped parasitic elements for circularly/elliptically

Details Monopole/L-shaped parasitic elements for circularly/elliptically Monopole/L-shaped parasitic elements for circularly/elliptically

1988-05-06

1989-09-05

Hille, Rolf

Communications: radio wave antennas

Antennas

Antenna with parasitic director

343834, 343829, 343830, 343846, H01Q 1900

Patent

active

048643203

ABSTRACT:
The subject invention relates to antennas having substantially greater bandwidth and low angle gain of the type for the transceiving of circularly/elliptically polarized electromagnetic waves. The antenna structure comprises a ground plane, a source of linearly-polarized wave energy field associated with said ground plane, and a plurality of conductive elements having an L-shape, said elements equally spaced from one another and equiangularly disposed about the sources, said plurality of elements being in a form of a circular arrangements, each element being so disposed as to fall on the circumference of the circular arrangement, each element lying in a common plane orthogonal to the linearly-polarized wave energy field provided by said source. The subject invention has special utility in motor and marine craft for communication and navigation.

REFERENCES:
patent: 2026652 (1936-01-01), Ponte
patent: 2928087 (1960-03-01), Parker
patent: 3109175 (1963-10-01), Lloyd
patent: 3560978 (1971-02-01), Himmel et al.
patent: 4555708 (1985-11-01), Waineo et al.
patent: 4631546 (1986-12-01), Dumas et al.
patent: 4700197 (1987-10-01), Milne

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