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Journal of the Korean Institute of Electromagnetic and Science 2001;1(1):63-66.
Efficient Derivation of Closed-Form Green`s Functions for a Microstrip Structure
Byoung-Hee Oh1, Eui-Joong Kim1, Young-Soon Lee1, Young-Ki2
1Department of Electronic Engineering, Kum-oh National University fo Tech
2Department of Electronics, Kyungpook National University
Abstract
In order to derive simple and accurate closed-form spatial Greep’s functions for the thick microstrip substrate, an efficient method based on the two-level approach, which circumvents the burdensome steps (i.e., without necessity of extraction of quasi-static contributions and subsequent determination of approximation parameters) in the previous complex image method, is considered in conjunction with the use of the original Prony`s method. The present method is observed to give more accurate results for the evaluation of the Green`s functions over wider frequency range independently of the source-to-field distances than the previous method.
Key words: open microstrip structure, complex images, two-level approach

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