Advanced investigation on EBG structures: A critical analysis to optimize the performance of asymmetric couple-line bandpass filter

Electromagnetic Band Gap Structures have been grown into the most notable framework by virtue of their superior efficacy, less intricacy in fabrication, and unified integration with the monolithic microwave integrated circuits (MMICs). In this epistle, in sequence of our previous investigation, a certain number of novel designs of EBGS are proposed and characterized with some rigorous parametric studies. This letter regards the planar-EBG frameworks in the fashion of 3×9 Left segment - Right segment combination-uniform circular, square, and annular ring patterns. By the same token, optimum Filling Factor has been investigated by exclusively analysing the traditional frequency response of band pass filter from three imperative aspects such as: initial stop band analysis, pass band analysis, and conclusive stop band analysis. In like manner, the parametric comparison has been demonstrated in view of the initial frequency response, selectivity, 3dB cut-off frequency, 3dB pass bandwidth, insertion loss at 2nd harmonics, and the insertion loss at 3rd harmonics to figure out the optimum filling factor for certain planar-EBG patterns.