Communications: radio wave antennas – Antennas – Antenna with parasitic reflector
Patent
1976-09-30
1978-07-11
Lieberman, Eli
Communications: radio wave antennas
Antennas
Antenna with parasitic reflector
343854, 343100SA, H01Q 326
Patent
active
041005481
ABSTRACT:
A bifocal pillbox antenna system is disclosed comprising a controller means providing control voltages and sequential switching signals to scan circuits. The scan circuits provide RF energy selectively to feed elements of a contoured feed array for radiation in a waveguide means. The waveguide means includes a waveguide and a pair of reflectors specially shaped to provide a pair of spaced focal points. The energy radiating from the feed elements with a non-linear phase distribution is guided to the specially shaped reflectors and reflected with a nearly linear phase distribution for transmission.
REFERENCES:
patent: 2549721 (1951-04-01), Straus et al.
patent: 3568207 (1971-03-01), Boyns et al.
patent: 3775769 (1973-11-01), Heeren et al.
patent: 3852762 (1974-12-01), Henf et al.
patent: 3914765 (1975-10-01), Litt et al.
patent: 3945009 (1976-03-01), Trigon
Dover Richard Thomas
Hemmi Christian Otto
Kesler Oren Byrl
Bandy Alva H.
Deeley, Jr. Harold P.
Lieberman Eli
The United States of America as represented by the Secretary of
Wildensteiner Otto M.
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