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On Equivalent Radius of Curvature for PWL Geometrical Modeling of a Loop Antenna

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1 Author(s)
Lysko, A.A. ; Meraka Inst. of the Council for Sci. & Ind. Res. (CSIR), Pretoria, South Africa

A circular loop antenna is often numerically modeled using a regular polygon. This approach is simple and robust, yet it alters the circumference of the loop and may thus shift the resonance frequency in the numerical model. This letter introduces a simple analytical formula for predicting and relating the accuracy of resonance frequency determination to the number of segments used. The result of testing on commercial software WIPL-D showed an excellent match between the prediction and numerically derived results. It is expected that the approach can be extended onto other structures with curvatures.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )

Date of Publication:

2012

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