Communications: radio wave antennas – Antennas – Slot type
Patent
1984-08-31
1986-04-15
Lieberman, Eli
Communications: radio wave antennas
Antennas
Slot type
H01Q 1318
Patent
active
045830983
ABSTRACT:
A slotted-cylinder antenna especially adapted for television broadcasting use radiates a circularly-polarized pattern. Each radiating slot is associated with an elongated conductive parasitic radiator in close proximity to the slot for good power coupling therebetween. The parasitic radiator is almost but not quite parallel with the slot (preferably being at a six degree orientation with the slot), so that energy is coupled into the parasite and reradiated almost vertically polarized. The combination of the radiated field of the slot and reradiated field of the parasite is made circularly polarized by selection of that length of the parasite which gives the correct phase-shift.
REFERENCES:
patent: 2946055 (1960-07-01), Faflick
patent: 2972147 (1961-02-01), Wilkinson
patent: 2981947 (1961-04-01), Bazan
patent: 3340534 (1967-09-01), Fee
patent: 3541560 (1970-11-01), Lyon et al.
patent: 4021815 (1972-05-01), Bogner
patent: 4129871 (1978-12-01), Johns
patent: 4297706 (1981-10-01), Nikolayuk
Antennas by Kraus, published by McGraw-Hill Book Co., 1950 pp. 356-361.
Antenna Engineering Handbook, edited by Jasik, published by McGraw-Hill, 1970, p. 8-2.
Lieberman Eli
Meise William H.
RCA Corporation
Tripoli Joseph S.
Troike Robert L.
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