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Dispersion Properties and Applications of the
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上传时间: 2012-05-15
详细说明: This paper illustrates some salient dispersion properties of the Coifman scaling function based MRTD technique (Coifman S-MRTD) and discusses its applicability to modeling problems of interest. Having been recently introduced, this method presents advantages similar to those of the Daubechiesbased MRTD, namely highly linear numerical dispersion and finite support of the basis functions involved. It is additionally shown that inherent accuracy-computational complexity tradeoffs involved with its dispersion properties can be utili zed to accelerate its execution, without compromising its accuracy. Since the Coifman basis function is non-symmetric, the modeling of perfect electric conducting boundaries cannot be pursued via the image theory approach presented in the past. Therefore, a modified approach, along with its computationally efficient implementation, is proposed and validated. Several case studies and comparisons with the conventional FDTD method demonstrate the usefulness of Coifman S-MRTD as a time-domain analysis and design tool. ...展开收缩
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