Broad-band spiral-slot antenna

Details Broad-band spiral-slot antenna Broad-band spiral-slot antenna

1975-09-08

1977-06-28

Lieberman, Eli

Communications: radio wave antennas

Antennas

Plural diverse-type antennas using same active element

343769, 343895, H01Q 138, H01Q 1318

Patent

active

040329216

ABSTRACT:
A broad-band antenna device comprising a variable aperture element which radiates or receives signals in the high frequency portion of the band and a pair of fixed aperture elements which radiate or receive signals in the low frequency portion, the variable aperture element comprising a planar spiral antenna element with a double winding which is electrically coupled to the fixed aperture elements comprising a pair of oppositely positioned center fed slot antenna elements.

REFERENCES:
patent: 2508085 (1950-05-01), Alford
patent: 3568206 (1971-03-01), Sisson et al.
patent: 3820117 (1974-06-01), Hall et al.

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