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An extrapolation technique is presented which reduces the computational demands of obtaining a wideband electromagnetic response from a resonant antenna using traditional computational electromagnetic methods. It has been shown that a wideband response can be extrapolated by fitting early-time and low-frequency data with a summation of orthogonal polynomials. However, representing responses characteristic...
A new technique is presented here which utilizes both orthogonal polynomials and damped sinusoids to extrapolate time and frequency responses using only early-time and low-frequency data. Damped sinusoids are used to efficiently represent the effects of resonances while the remaining behavior is accurately characterized by polynomials. To ensure reliably accurate results, a genetic algorithm (GA)...
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