Rational Modeling of Narrow Band Antenna by Vector Fitting

Abstract

This paper proposes a new methodology in rational modeling of narrow band antenna. Through the analysis for the measured Z-parameter of the antenna via vector fitting method (VFM), the rational fraction polynomial can fit the Z-parameter accurately. By comparing the basic models with the polynomial, the rational model of the antenna and parameters can be derived. The model has high accuracy in characterizing the antenna, and plays a guiding role in narrow band antenna design.