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J Electromagn Eng Sci > Volume 12(4); 2012 > Article
Journal of Electromagnetic Engineering and Science 2012;12(4):240-246.
DOI: https://doi.org/10.5515/JKIEES.2012.12.4.240   
Circuit Model Analysis for Traces that Cross a DGS
Kibum Jung1, Jongkyung Lee1, Yeon-Choon Chung2, Jae-Hoon Choi3
1E&R Tech Co., Ltd.
2Dept. of Electronics, Seokyeong University
3Dept. of Electronics Computer Engineering, Hanyang University
Abstract
This paper presents a novel modeling technique for traces that cross a defected ground structure. A simple and accurate equivalent circuit model provides clear insight into the coupling mechanism between a microstrip line and a slot or split. The circuit models consist of a transformer as the coupling mechanism and LC resonators as the ground with a slot or split structure. Resistors, capacitors, and inductors are added to the model to increase accuracy and equivalence at high frequency. Simulated and measured S-parameters are presented for defected ground structures. The accuracy and validity of the proposed equivalent circuit model is verified by evaluation of the S-parameter characteristics of the defected ground structures and comparison with measured results.
Key words: Circuit Model, Defected Ground Structure (DGS)
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