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Effects of Substrate Parameters on the Resonance Frequency of Double-sided SRR Structures under Two Different Excitations

Ekmekci, E.
Averitt, R. D.
Sayan, Gönül
In this study, we numerically investigate the effects of substrate parameters (i.e., the thickness and the permittivity) on the resonance frequency of the double-sided SRR (DSRR) structure under two different excitation conditions. This includes either electric or magnetic excitations which are two common techniques to obtain a resonant effective permittivity or permeability, respectively. The numerical calculations are performed using CST Microwave Studio. The numerical results reveal a similar trend in the DSRR response as the substrate permittivity values are varied for either electric or magnetic excitation while an opposite behavior is observed for changes of the substrate thickness.