Design and Implementation of Closely Spaced MIMO Antennas Zeroth-Order Resonator Antenna (ZORA) with Enhancement Isolation
Keywords:
multiple-input multiple-output antenna (MIMO), reflection coefficient (S11), Composite right/left-handed (CRLH)Abstract
A high isolation multiple-input multiple- output (MIMO) antenna with closely spaced was presented. This antenna was designed for the purpose of MIMO wireless application. The proposed MIMO antenna consists of two antennas, each operates at 2.5 GHz. The MIMO antenna system elements on a single low-cost FR4 substrate of a compact size of 47.36 mm × 29 mm and is fed by a 50 Ω microstrip. A prototype band WiMAX antenna performance was examined. The results showed that the antenna has at 2.5 GHz a reflection coefficient better than -40 dB. As a new approach, the reduction of mutual coupling depends on current cancellation between two antennas. The proposed antenna achieved better than -30 dB isolation between the two inputs. In addition, high isolation between the antenna elements and the small spacing between antenna elements, the proposed antenna has compact size reduction of approximately 60% compared to conventional patch antennas operating at the same frequency.
References
[1] C. A. Balanis ―Antenna Theory Analysis and Design‖, John Wiley & sons, inc., Publication, 3rd Edition, ISBN: 0-471-66782, 2005.
[2] M. Abdalla1 ,A. Ibrahim, A.Abdel-Rahman, Hesham F. A. Hamed, ―Investigation Design of a High Isolation Closely Spaced Compact CRLH Meta-Material MIMO Antenna‖, 30thNATIONAL RADIO SCIENCE CONFERENCE (NRSC 2013) April 2013, National Telecommunication Institute, Egypt.
[3] C. Caloz, ―Electromagnetic metamaterials‖, Wiiley, 2006.
[4] D. Gesbert, M. Shafi, D. Shiu, P. J. Smith, and A. Naguib, ―From theory to practice: an overview of MIMO space–time coded wireless systems,‖ IEEE Journal on Selected Areas in Communications, vol. 21, no. 3, pp. 281-302, 2003.
[5] ―Understanding of SISO, SIMO, MISO and MIMO‖. Retrieved December 17, 2014.
[6] M. A. Abdalla1 ,. " Small Size High Isolation CRLH Meta- Material Closely Spaced MIMO Antenna‖., 30th NATIONAL RADIO SCIENCE CONFERENCE (NRSC 2013).
[7] C. Caloz and T. Itoh, Electromagnetic Metamaterials Transmission Line Theory and Microwave Applications. Hoboken, NJ, USA: Wiley, 2006.
Downloads
Published
Issue
Section
License
Copyright (c) 2020 Journal of Electrical and Electronic Engineering and Information Technology
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
