Accurate Analysis of Various Planar Transmission Lines with Finite Metallization Thickness Using Eigen-Function Weighted Boundary Integral Equation Method


IEICE TRANSACTIONS on Electronics   Vol.E75-C    No.2    pp.259-266
Publication Date: 1992/02/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Theory
microwave and millimeter wave technology,  

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In this paper, the eigen-function weighted boundary integral epuation method (EW-BIEM) is applied to analyze the dispersion characteristics of various planar transmission lines with finite metallization thickness, such as the micro-strip lines, conductor-backed coplanar waveguides and micro-coplanar striplines for the first time. Due to the choice of the eigen-functions as weighted functions instead of Green's function, the computational time is shortened to a great extent and the singularity problems are also avoided. The difficulty in treating strip thickness can be overcome by considering the 90 edge on the strip as a 90 circular arc whose radius tends to zero. The computational results clearly demonstrate that the effects of finite strip thickness on the propagation properties of these transmission lines can be treated easily and efficiently with this method.