標題: An efficient analysis of shielded single and multiple coupled microstrip lines with the nonuniform fast Fourier transform (NUFFT) technique
作者: Su, KY
Kuo, JT
電信工程研究所
Institute of Communications Engineering
關鍵字: method of moments (MoM);microstrip lines nonuniform fast Fourier transform (NUFFT);spectral-domain approach (SDA)
公開日期: 1-Jan-2004
摘要: A nonuniform fast Fourier transform (NUFFT) technique is incorporated into the spectral-domain approach for the analysis of shielded single and multiple coupled microstrio lines. Each of the spectral-domain Green's functions is decomposed into an asymptotic part and a remaining part. At the interface of layered dielectrics with conducting strips, the product of a basis function and an associated Green's function constitutes an expansion E-field. The inverse Fourier transform (IFT) of the expansion E-field is its spatial distribution all over the interface. We take this advantage to match the final boundary conditions on all the conducting strips simultaneously. As a result, if all the strips are at one interface, the number of operations required in this method is proportional to N-l, but not to N-l(2), where N-l is the number of the strips. The IFT of the asymptotic part of each expansion E-field can be obtained analytically, and that of the remaining part can be quickly processed by the NUFFT. The Gauss-Chebyshev quadrature is used to accelerate the computations of the integrals resulted from the Galerkin's procedure. The proposed method is also applied to investigate the dispersion characteristics of coupled lines with finite metallization thickness and of coupled lines at different levels. A,convergence analysis of the results is presented and a comparison of used CPU time is discussed.
URI: http://dx.doi.org/10.1109/TMTT.2003.821248
http://hdl.handle.net/11536/27172
ISSN: 0018-9480
DOI: 10.1109/TMTT.2003.821248
期刊: IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Volume: 52
Issue: 1
起始頁: 90
結束頁: 96
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