IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
A Decoupling Method for MIMO Antennas by Using a Short Stub
Takuya MiyasakaHiroshi SatoMasaharu Takahashi
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Keywords: MIMO, decoupling, short stub
JOURNALS FREE ACCESS Advance online publication

Article ID: 2018XBL0093

This article has a public article.

In recent years, MIMO technology which uses multiple antennas has been introduced in mobile terminal to increase communication capacity. However, if MIMO antennas are put closely, a strong mutual coupling occurred. Then it causes decreasing radiation efficiency and channel capacity. Therefore, reducing the mutual coupling is required. In previous study, connecting MIMO antennas by inductor L or added branch elements to antennas instead of L. In this paper, we propose a novel decoupling method by using a short stub and confirm that proposed model performed decoupling, increased radiation efficiency.

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