04008479 is referenced by 76 patents and cites 1 patents.

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.

Title
Dual-frequency circularly polarized spiral antenna for satellite navigation
Application Number
5/628047
Publication Number
4008479
Application Date
November 3, 1975
Publication Date
February 15, 1977
Inventor
Valor Clark Smith
LeMesa
CA, US
Agent
Rines and Rines
Assignee
CHU Associates
MA, US
IPC
H01Q 1/36
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