Low cost linear/circularly polarized antenna

Details Low cost linear/circularly polarized antenna Low cost linear/circularly polarized antenna

1976-04-02

1977-12-06

Lieberman, Eli

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343802, 343806, H01A 2126

Patent

active

040620190

ABSTRACT:
A linear/circularly polarized antenna system is provided by four conductive elements. The conductive elements are joined in pairs at their ends with the joined ends spaced by a conductive support member from a flat reflector. The lengths of the conductive elements of each dipole element are changed from being equal lengths of approximately a quarter operating frequency wavelength to one slightly longer and the other slightly less than a quarter wavelength to selectively change operation from that of a linearly polarized antenna to that of a circularly polarized antenna.

REFERENCES:
patent: 2847670 (1958-08-01), Cox
patent: 2976534 (1961-03-01), Kampinsky
patent: 3413644 (1968-11-01), Laub et al.
patent: 3771162 (1973-11-01), Dienes
patent: 3919710 (1975-11-01), Fletcher

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