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.
Reference:
Lysko, A.A. 2012. On equivalent radius of curvature for PWL geometrical modeling a loop antenna. IEEE Antennas and Wireless Propagation Letters, vol. 11, pp. 1323-1325, DOI 10.1109/LAWP.2012.2226230
Lysko, A. A. (2012). On equivalent radius of curvature for PWL geometrical modeling a loop antenna. http://hdl.handle.net/10204/6494
Lysko, Albert A "On equivalent radius of curvature for PWL geometrical modeling a loop antenna." (2012) http://hdl.handle.net/10204/6494
Lysko AA. On equivalent radius of curvature for PWL geometrical modeling a loop antenna. 2012; http://hdl.handle.net/10204/6494.
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