A Compact MIMO UWB Antenna Using Different Types of Dipoles with Low Mutual Coupling

Nguyen Quoc DINH  Le Trong TRUNG  Xuan Nam TRAN  Naobumi MICHISHITA  

IEICE TRANSACTIONS on Communications   Vol.E99-B   No.11   pp.2381-2389
Publication Date: 2016/11/01
Publicized: 2016/06/02
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2015EBP3533
Type of Manuscript: PAPER
Category: Antennas and Propagation
ultra-wide band (UWB),  ultra-wide band (UWB) antenna,  printed antenna,  MIMO antenna,  

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In this paper, a new MIMO antenna for ultra-wide band (UWB) applications is designed and proposed. The proposed MIMO antenna consists of two single UWB antenna elements, one acts as a magnetic dipole while the other as an electric one, to reduce mutual coupling. In order to reduce further the mutual coupling, a copper stub is used to isolate the two antenna elements. The designed MIMO UWB antenna provides a broad operating bandwidth from 3.1GHz to 10.6GHz, while achieving low mutual coupling and VSWR ≤ 2. Various performance characteristics of the antenna such as radiation patterns, VSWR, and the maximal gain are thoroughly investigated by simulations and experiments.