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Progress In Electromagnetics Research Letters
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A SIMPLIFIED EQUIVALENT CIRCUIT MODEL FOR DEFECTED GROUND STRUCTURES IN PLANAR TRANSMISSION LINES

By H. M. Taher

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Abstract:
In this paper, an equivalent circuit model for special type of planer transmission lines with defected ground structures (DGS) is presented. This structure has multi stop bands in its frequency behaviour. The proposed circuit is very simple compared to the previously published works. It is considered as simplified form of the model found in [8]. Using sensitivity analysis on model [8], some circuit parameters can be omitted without significant influence on the response of the model. The modified model is easily extracted from the full-wave EM simulations. An excellent agreement is obtained between S-parameters of the simplified equivalent circuit and their counterpart of full wave EM simulators.

Citation:
H. M. Taher, "A Simplified Equivalent Circuit Model for Defected Ground Structures in Planar Transmission Lines," Progress In Electromagnetics Research Letters, Vol. 29, 157-166, 2012.
doi:10.2528/PIERL11122405

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