Fast Computation of Layered Media Green's Function via Recursive Taylor Expansion

Keisuke Konno, Qiang Chen, Robert J. Burkholder

研究成果: Article

8 引用 (Scopus)

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The layered media Green's function (LMGF) is useful as a kernel of the method of moments (MoM) for a thin stratified medium. The self/mutual impedance expression of the MoM in conjunction with the LMGF includes a semi-infinite spectral integral inside the multiple integrals over spatial variables. As a result, computation of impedance matrix entries is quite costly. In this letter, an interpolation method by using the Taylor expansion is proposed. The method precomputes the spectral integral for a single spatial variable. The derivatives in the expansion are found in closed form using the recursive property of the Bessel functions. After that, the precomputed results of the spectral integral are interpolated via the Taylor expansion when the multiple integrals over spatial variables are performed. Due to the proposed method, the spectral integral and multiple integrals over spatial variables are separated from each other, and the resultant CPU time becomes quite manageable for very large problems.

元の言語English
記事番号7600425
ページ(範囲)1048-1051
ページ数4
ジャーナルIEEE Antennas and Wireless Propagation Letters
16
DOI
出版物ステータスPublished - 2017

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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