Improvement of coupling suppression by using multi-stacked mushroom structure

Abstract

This paper proposes a multi-stacked mushroom structure to suppress the mutual coupling between monopole antennas, whose height is taller than that of a conventional mushroom structure. Based on moment method analysis results, it is clarified that the multi-stacked mushroom structure can suppress the mutual coupling more than a conventional 2D arranged structure. Furthermore, the validity of the results is clarified by experiments.