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

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 relat...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 11; pp. 1323 - 1325
Main Author Lysko, A. A.
Format Journal Article
LanguageEnglish
Published IEEE 2012
Subjects
Accuracy
Antennas
Approximation error
Approximation methods
Computational modeling
electromagnetic modeling
helical antennas
loop antennas
mesh generation
numerical analysis
Numerical models
piecewise linear approximation
resonance
Resonant frequency
thin wire approximation
wire modeling
Wires
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Summary: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.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2012.2226230