Direct fed spiral antenna

Details Direct fed spiral antenna Direct fed spiral antenna

1975-03-06

1976-04-06

Lieberman, Eli

Communications: radio wave antennas

Antennas

Spiral or helical type

343854, H01Q 136

Patent

active

039494071

ABSTRACT:
A direct fed spiral antenna element array is disclosed for radiating electromagnetic energy. Each antenna element is a multi-arm spiral element having inner and outer ends. Phase shifting is obtained with internal phase control wherein switching means serve to interconnect selected ones of the inner arm ends. Each such antenna element is directly fed by a feed network which feeds currents directly to the outer ends of the spiral arms.

REFERENCES:
patent: 3039099 (1962-06-01), Chait et al.

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