Enhanced Matching and Vialess Decoupling of Nearby Patch Antennas for MIMO System

Alizadeh Ghannad, Amir, Khalily, Mohsen, Xiao, Pei, Tafazolli, Rahim and Kishk, Ahmed A. (2019) Enhanced Matching and Vialess Decoupling of Nearby Patch Antennas for MIMO System IEEE Antennas and Wireless Propagation Letters.

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Abstract

Simultaneous improvement of matching and isolation for a modified two-element microstrip patch antenna array is proposed. Two simple patch antennas in a linear array structure are designed, whereas, the impedance matching and isolation are improved without using any conventional matching networks. The presented low profile multifunctional via-less structure comprises of only two narrow T-shaped stubs connected to feed lines, a narrow rectangular stub between them, and a narrow rectangular slot on the ground plane. This design provides a simple, compact structure with low mutual coupling, low cost and no adverse effects on the radiation and resonance. To validate the design, a compact very-closely-spaced antenna array prototype is fabricated at 5.5 GHz which is suitable for multiple-input-multiple-output (MIMO) systems. The measured and simulated results are in good agreement with a 16 dB, and 40 dB of improvements in the matching and isolation, respectively.

Item Type:	Article
Divisions :	Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :	Name Email ORCID Alizadeh Ghannad, Amir Khalily, Mohsen m.khalily@surrey.ac.uk Xiao, Pei P.Xiao@surrey.ac.uk Tafazolli, Rahim R.Tafazolli@surrey.ac.uk Kishk, Ahmed A.
Date :	27 March 2019
Funders :	Institute for Communication Systems, University of Surrey
DOI :	10.1109/LAWP.2019.2906308
Copyright Disclaimer :	© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords :	Multiple-input and multiple output (MIMO); Array antenna; Isolation; Matching; MIMO communication; Microstrip antenna arrays; Mutual coupling; Microstrip; Impedance matching
Related URLs :	Publisher
Depositing User :	Clive Harris
Date Deposited :	10 Apr 2019 08:55
Last Modified :	10 Apr 2019 08:55
URI:	http://epubs.surrey.ac.uk/id/eprint/851040

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