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Equivalent Circuit Modelling of Spiral Defected Ground Structure for Microstrip Line
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- Authors
- Chul-Soo Kim, Jong-Sik Lim, Sangwook Nam, Kwang-Yong Kang, Dal Ahn
- Issue Date
- 2002-09
- Citation
- Electronics Letters, v.38, no.19, pp.1109-1110
- ISSN
- 0013-5194
- Publisher
- IET
- Language
- English
- Type
- Journal Article
- Abstract
- An equivalent circuit for the microstrip line with a spiral defected ground structure (DGS), which is etched on the metallic ground plane, and a parameter extraction method, are presented. The proposed spiral DGS provides steep rejection characteristics with only one spiral-shaped defect. Experimental results show excellent agreement with simulated results of the equivalent circuit and the validity of equivalent circuit modelling for the spiral DGS.