MIMO Antenna Using Hybrid Electric and Magnetic Coupling for Isolation Enhancement

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Cheng-Dai Xue
  • Xiu Yin Zhang
  • Yun Fei Cao
  • Zhangju Hou
  • Chao Feng Ding

Detail(s)

Original languageEnglish
Article number8007316
Pages (from-to)5162-5170
Journal / PublicationIEEE Transactions on Antennas and Propagation
Volume65
Issue number10
Online published11 Aug 2017
Publication statusPublished - Oct 2017

Abstract

This paper presents a multiple-input and multiple-output antenna using a wideband decoupling structure for enhancing isolation. The decoupling structure is formed by a split ring, which consists of an inductive line and a capacitive gap to realize magnetic and electric coupling, respectively. By introducing the electric coupling in addition to the magnetic coupling, more degrees of freedom are obtained and the original coupling between antennas can be canceled out within a wide frequency band. Meanwhile, the performance of each antenna element is maintained, such as impedance bandwidth and radiation characteristics. Theoretical analysis and experimental verification are carried out. When the decoupling structure is placed between these two monopole antennas with edge-to-edge space of only 5 mm ( 0.04\lambda -{0} at 2.5 GHz), more than 20 dB isolation is realized over the bandwidth of 2.3-2.9 GHz (24%) with S-{11} and S-{22} less than -10 dB. Moreover, the isolation levels reach more than 30 dB over the frequency band of 2.3-2.8 GHz. Compared with the previous related works using decoupling networks and neutralization line techniques, the proposed decoupling structure can provide higher isolation of over 30 dB in a wider bandwidth.

Research Area(s)

  • Antenna, decoupling, high isolation, multiple-input and multiple-output (MIMO), wideband

Citation Format(s)

MIMO Antenna Using Hybrid Electric and Magnetic Coupling for Isolation Enhancement. / Xue, Cheng-Dai; Zhang, Xiu Yin; Cao, Yun Fei; Hou, Zhangju; Ding, Chao Feng.

In: IEEE Transactions on Antennas and Propagation, Vol. 65, No. 10, 8007316, 10.2017, p. 5162-5170.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review