Abstract
Mutual coupling studies between printed antennas had known some difficulties arising out of either physical phenomena or mainly the computational EM methods used for EM analysis. In this paper, the fast numerical electromagnetic (EM) method so-called Transverse Wave Approach (TWA) and its extended version are presented for EM field modeling of planar structures. Taking into account from benefits of the advanced TWA process, a new efficient technique is introduced to investigate the mutual coupling between antennas in periodic walls. The implementation of this approach with low complexity effort is demonstrated in the context of wireless applications and the obtained simulation results are found to be in good agreement with EM theory and literature. (C) 2018 The Authors. Published by IASE.