Analysis of Multilayer Microstrip Lines

• Main Authors: Jong Fong Cheng, 陳忠峰
• Other Authors: Chia Nan Chang
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/70193396275274789518

碩士 === 國立臺灣科技大學 === 工程技術研究所 === 81 === A new quasistatic and fullwave analysis of microstrip line structures with multidielectric layers is presented,using a hybrid approach that combined the finite-element method and the conformal-mapping technique. In this hybrid approach,the Wheeler's mapping function is firstly adopted to transform the half-infinite original domain into a finite image domain and to overcome both the problems of infinite field extension and the field singularity difficuty around the conductor edges.Then,the integral formula for the quasistatic analysis is derivved from the Laplace's equation in a way similar to that of weighted residual method in the finite-element analysis,while the variational formula for the fullwave analysis is derived from the Maxwell equation and then obtained from variational reaction theory. In the final part of this approach,numerical results for effective dielectric constants,characteristic impedances,charge distributions,current distributions and dispersion conditions for various multilayer microstrip lines structures are presented and discussed. Comparsions of the present results with the available quasistatic and fullwave ones are made,and good agreements are obtained.