Dual-frequency circularly polarized spiral antenna for satellite

Details Dual-frequency circularly polarized spiral antenna for satellite Dual-frequency circularly polarized spiral antenna for satellite

1975-11-03

1977-02-15

Lieberman, Eli

Communications: radio wave antennas

Antennas

Spiral or helical type

343873, H01Q 136

Patent

active

040084795

ABSTRACT:
This disclosure deals with a novel dual-frequency circularly polarized antenna that is particularly adapted for receiving satellite transmissions and/or for transmitting signals to satellites as for navigation purposes, the antenna being adapted through novel conductive preferably spiral-element configurations of different lengths, to produce substantially omnidirectional horizontal coverage and substantially hemispherical vertical coverage at two or more operating frequencies.

REFERENCES:
patent: 3940772 (1976-02-01), Ben-Dou

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