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Proceedings Paper

Experimental study of the resonance of a circular array
Author(s): Hao-Ming Shen
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Paper Abstract

n order to verify the existence of the theoretically predicted, extremely sharp resonances that occur in a circular array with many identical elements but only one driven, an experimental investigation of such an array has been carried out. The circular array consists of 90 monopole elements equally spaced around a 6-meter circumference. The properties of the array are observed through three windows: the input admittance of the array, the relative currents on the parasitic elements, and the radiation patterns. It is found that resonance -- at which the conductance becomes very large and the susceptance very small -- does occur. The experiment shows that the quality of the resonance, Q(equals f/(Delta) f), depends strongly on the equality of the spacing between the elements and good conductive contact between the monopoles and the ground plate.

Paper Details

Date Published: 1 April 1991
PDF: 10 pages
Proc. SPIE 1407, Intense Microwave and Particle Beams II, (1 April 1991); doi: 10.1117/12.43508
Show Author Affiliations
Hao-Ming Shen, 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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