A Consideration of Channel Capacity of Near-field MIMO using Parasitic Elements

The conventional MIMO systems have a capability of enhancing channel capacity by exploiting multipath environment [1]. Recently, a novel scheme which utilizes MIMO system in near-field region has proposed [2]. In the near-field MIMO system, channel capacity is able to be improved without a multipath, because spherical wave is considered as a superposition of plane waves. It is expected that the near-field MIMO system enables us to realize high-speed short-range wireless communications. We have proposed a novel structure to improve channel capacity using side reflector and back reflector [3]. In this report, we propose a new structure to improve channel capacity using parasitic elements for near-field MIMO.