Circularly polarized antenna system using a combination of turns

Details Circularly polarized antenna system using a combination of turns Circularly polarized antenna system using a combination of turns

1974-09-20

1976-03-09

Lieberman, Eli

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343798, 343890, H01Q 2126

Patent

active

039435229

ABSTRACT:
A circularly polarized antenna system adapted to provide an omnidirectional pattern over a fairly broad band of frequencies when mounted to a sizable tower is provided by four turnstile fed horizontally polarized radiating elements spaced at 90.degree. intervals about the support tower and by four vertically polarized dipoles with each vertically polarized dipole mounted vertically spaced from a respective one of the four radiating elements. The four vertically polarized dipoles are spaced from each other and are fed in a manner to cause the horizontal pattern of the vertically polarized field associated with the vertically polarized dipoles to be of similar shape and magnitude and in phase quadrature to the horizontal pattern of the horizontally polarized field associated with the four horizontally polarized radiating elements.

REFERENCES:
patent: 2688081 (1954-08-01), Laport
patent: 2781513 (1957-02-01), Peterson

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