Design and Comparative Study on Planar ELC Resonators for ϵr Analysis

This article presents design of three types of Electric LC resonators based on primitive shapes. The rectangular, circular and hexagonal shaped structures are considered for design and analysis. The footprint of each resonator is 40 × 40 × 1.6mm
³
which is designed on FR-4 substrate with relative permittivity of 4.4 and loss tangent of 0.02. The resonator characteristics are obtained through EM simulations performed in Ansys Electromagnetics (AEDT –HFSS) and presented in terms of S
11
, S
21
, and phase response. Further, a dielectric superstrate is placed on the top of the resonator and the variation of resonant frequency characteristics were noted with different ϵ
r
variations.