Parasitic array with driven sleeve element

Details Parasitic array with driven sleeve element Parasitic array with driven sleeve element

1983-03-11

1986-08-05

Lieberman, Eli

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343722, 343792, H01Q 2112

Patent

active

046046283

ABSTRACT:
To provide broad bandwidth in a multiple-band directional antenna, the antenna includes an array of parallel horizontal elements, which are: (1) an open-sleeve dipole as the driven element; (2) a trap director element; and (3) trap reflector elements. The driven element includes: (1) a trap central dipole which is center-fed and has sections self-resonant within the bands of 21.0 to 21.45 megahertz and 14.0 to 14.35 megahertz; and (2) two unequal-length sleeves self-resonant at 28.0 to 29.7 megahertz. The director and reflector elements are resonant in the same bands and are spaced and tuned for directivity of the array.

REFERENCES:
patent: Re24413 (1958-01-01), Weiss
patent: 2975423 (1961-03-01), Wells
patent: 3064257 (1962-11-01), Guest
patent: 3176298 (1965-03-01), Nettles
A.R.R.L., "Parasitic Arrays", The A.R.R.L. Antenna Book, Ch. 6, pp. 6-14 to 6-23, published by the American Radio Relay League, Inc., Newington, Conn., 1983.

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