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Theoretical Analysis of Dispersion Characteristics of Microstrip Lines with Defected Ground Structure
Hai-Wen Liu, Zheng-Fan, Xiao-Wei Sun, Satoshi Kurachi, Jia Chen and Toshihiko Yoshimasu

In this letter, a simple approach to determine slow-wave factors is proposed. Furthermore, a comparison of the dispersion characteristics between DGS unit and periodic DGS is clarified. Also, the slow-wave and fast-wave behaviors of defected ground structures (DGS) unit are investigated and explained by an LC resonator.

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