Communications: radio wave antennas – Antennas – Active sleeve surrounds feed line
Patent
1982-01-21
1985-01-01
Lieberman, Eli
Communications: radio wave antennas
Antennas
Active sleeve surrounds feed line
343792, 343830, 343845, 343890, H01Q 112, H01Q 934
Patent
active
044918496
ABSTRACT:
There is provided a new and useful radio antenna comprising a mast; a pair of radiating elements mounted on the mast, and being oriented in a plane, and having one end of one element adjacent to one end of the second element; a coaxial feeder the outer conductor of which is joined to the first element of the pair at approximately the midpoint of the first element and having its center conductor extending to a predetermined feedpoint on the second element, this predetermined point being that at which the center conductor will be substantially impedance matched with the antenna; and, wherein the spacing of the gap between the adjacent ends of the first and second elements is such that the elements are fed by the feedpoint across the gap to provide a matched output of the pair of elements having the desired beam tilt.
This application relates to radio wave transmission and reception antennas.
REFERENCES:
patent: 2131105 (1938-09-01), Lindenblad
patent: 2234234 (1941-03-01), Cork et al.
patent: 2802210 (1957-08-01), Berndt
Biro, "Analysis and Design Technique of the Gamma Matched Dipole" Microwave Communication Conference, 4-70.
Tilston Stephen E.
Tilston William V.
Lieberman Eli
Wimer Michael C.
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