Abstract:The reduction of mutual coupling between antenna elements has been a research hotspot in the design of multi‐input multi‐output (MIMO) systems. In this paper, a review of the existing theory of characteristic mode (TCM) based decoupling methods is introduced, and they are summarized and divided into two categories according to mechanisms. The first category consists of the use of the modal properties of the radiator whereas the second one is based on the ground plane to enhance isolation. Moreover, a wideband … Show more
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