Study of Mutual Coupling and Chassismodes Coupling through the Equivalent Circuit Modeling of Two Monopoles on a Small Platform

Abstract

In addition to the mutual coupling between array elements, the coupling to the characteristic current modes of the chassis has to be considered. In this paper, the performance of a two-element monopole antenna on a small rectangular ground plane is analyzed based on a decomposition of the contributions from the elements and the coupled chassis modes. A resonatorbased equivalent circuit is proposed to model closely the fullwave simulation which allows the calculation of radiation and impedance contributions from the elements and the chassis modes.