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In this work, a response of a resonant structure is represented as a finite sum of weighted orthogonal polynomials and pole terms. The driving-point current of a resonant antenna is extrapolated with each pole-estimation method and accuracy is studied as a function of the amount of early-time and low-frequency data used. Computational electromagnetic (CEM) methods are often used to numerically compute...
An improved technique is presented to extrapolate a wideband electromagnetic response of a resonant structure using only early-time and low-frequency computed data. The response is represented as a sum of weighted polynomials and pole terms. Previously, poles were estimated from early-time data. In this paper, poles are also estimated from low-frequency data and used to accurately extrapolate a response...
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