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Proceedings Paper

Analytical studies of large closed-loop arrays
Author(s): George Fikioris; D. K. Freeman; Ronold W.P. King; Hao-Ming Shen; Tai Tsun Wu
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Paper Abstract

35The resonant properties of large circular arrays of parallel, nonstaggered dipoles have been analyzed specifically when only one element is driven. The approach involves using tubular cylindrical dipoles and the integral equations of antenna theory. The parameters that are involved in the adjustment to any one of many possible resonant distributions of current around the array include the length and radius of the (Nu) identical tubular dipoles and the distance between them as fractions of the operating wavelength. Extremely sharp resonances have been obtained at properly selected values of the parameters. The very large resonant amplitudes of the currents in the elements can have any one of a variety of different symmetrical distributions of phase around the array including 180 degree(s) shifts from element to adjacent element. Typical field patterns consist of many extremely sharp peaks. The study of the circular array has been carried out using the method of symmetrical components. In order to study closed loops of dipoles other than the circle, e.g., ellipses, egg-shaped curves, etc., the analysis is being generalized.

Paper Details

Date Published: 1 April 1991
PDF: 11 pages
Proc. SPIE 1407, Intense Microwave and Particle Beams II, (1 April 1991); doi: 10.1117/12.43507
Show Author Affiliations
George Fikioris, Harvard Univ. (United States)
D. K. Freeman, Harvard Univ. (United States)
Ronold W.P. King, Harvard Univ. (United States)
Hao-Ming Shen, Harvard Univ. (United States)
Tai Tsun Wu, Harvard Univ. (United States)

Published in SPIE Proceedings Vol. 1407:
Intense Microwave and Particle Beams II
Howard E. Brandt, Editor(s)

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