A Dual-Band Decoupling Method of 2 Elements MIMO Antennas by Using a Short Stub and a Branch Element

Takuya MIYASAKA  Hiroshi SATO  Masaharu TAKAHASHI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E102-B   No.8   pp.1763-1770
Publication Date: 2019/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2018EBP3340
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
MIMO,  CA,  decoupling,  dual-band,  short stub,  

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Summary: 
In recent years, MIMO technology which uses multiple antennas has been introduced to the mobile terminal to increase communication capacity per unit frequency. However, if MIMO antennas are put closely, a strong mutual coupling occurred. Moreover, CA which uses multiple frequencies is also utilized to improve communication speed. Therefore, reducing mutual coupling in multiple frequencies is required. In this paper, we propose a dual-band decoupling method by using a short stub and a branch element and confirmed that the proposed model performed decoupling, increased radiation efficiency.