Title :
On Equivalent Radius of Curvature for PWL Geometrical Modeling of a Loop Antenna
Author :
Lysko, Albert A.
Author_Institution :
Meraka Inst. of the Council for Sci. & Ind. Res. (CSIR), Pretoria, South Africa
fDate :
7/4/1905 12:00:00 AM
Abstract :
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.
Keywords :
loop antennas; numerical analysis; PWL geometrical modeling; circular loop antenna; commercial software WIPL-D; equivalent radius; Accuracy; Antennas; Approximation methods; Computational modeling; Numerical models; Resonant frequency; Wires; Approximation error; electromagnetic modeling; helical antennas; loop antennas; mesh generation; numerical analysis; numerical models; piecewise linear approximation; resonance; thin wire approximation; wire modeling;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2226230
