Flat wide-band antenna

Details Flat wide-band antenna Flat wide-band antenna

1986-07-01

1989-02-14

Sikes, William L.

Communications: radio wave antennas

Antennas

Microstrip

343742, 343866, H01Q 138, H01Q 700

Patent

active

048049654

ABSTRACT:
An antenna for receiving or transmitting electromagnetic waves with circular polarization or, in certain configurations, linear polarization. The antenna element is low-cost, wide-band and medium-gain broadside antenna element which may be used alone or in arrays. One embodiment disclosed comprises a wire or micro-strip conductor outlining a cruciform shaped loop parallel to a conductive plane from which it is separated by a dielectric layer. The lengths and widths of the branches of the cruciform loop are chosen to be .lambda.g/2 and .lambda.g/N respectively, where .lambda.g is the guide wavelength of the radiative transmission line formed by the conductor and plane. The antenna element is applicable to mobile earth-bound terminals for selective communications, for example.

REFERENCES:
patent: 2537191 (1951-01-01), Moore
patent: 2551664 (1951-05-01), Galper
patent: 3530486 (1970-09-01), Strider
patent: 3534372 (1970-10-01), Scheuerecker et al.
patent: 3689929 (1972-09-01), Moody
patent: 3716861 (1973-02-01), Root
patent: 4012742 (1977-03-01), Dempsey

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