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Dual-wideband MIMO antenna for long term evolution and wireless local area network indoor applications

Doctor of Philosophy in Communication Engineering

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Bibliographic Details
Main Author: Mohannad Obaid, Katie
Other Authors: Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2017
Subjects:
MIMO systems
Wireless LANs
Wireless communication systems
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76661
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spelling my.unimap-766612022-11-01T01:53:34Z Dual-wideband MIMO antenna for long term evolution and wireless local area network indoor applications Mohannad Obaid, Katie Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr. MIMO systems Wireless LANs Wireless communication systems Doctor of Philosophy in Communication Engineering Multiple-input multiple-output (MIMO) technique use multiple antennas at both transmitter and receiver to improve the performance of wireless communications system over multipath fading channels. A compact dual-wideband MIMO antenna with a size of 36 × 22 mm2 was proposed for indoor portable wireless systems to serve the LTE and WLAN applications, which cannot operate with the compact UWB MIMO antenna. Due to the UWB technology unable of covering the LTE 2500 (2.5-2.7 GHz) standard, and the UWB frequency range overlaps with the IEEE 802.11a standard for wireless local area networks (WLANs). The proposed dual-wideband MIMO antenna consists of two identical monopole antenna elements (MA) and microstrip feed line for each, which are placed on one side of the substrate. The ground plane with T-shaped stub is placed on the other side of the substrate to reduce mutual coupling and enhance the isolation between the antenna elements. The proposed antenna provides two operating bands of 2.5- 2.85 GHz and 4.85- 6.1 GHz are centered at 2.64 and 5.3 GHz respectively, by using the technique of strips and slits on the upper edge of the ground plane. The compact UWB MIMO antenna has a size of 32 × 20 mm2 also consists of two symmetrical MA elements and a ground plane with partial slope including protruding stub for isolation improvement and covers band of 3-11.52 GHz. To design and optimize the performance of the two proposed MIMO antennas, CST simulation software used to achieve the reliable results in term of S-parameters (reflection coefficient with mutual coupling between the two ports), and (radiation pattern with correlation coefficient) in term of diversity pattern. The two MIMO antennas were fabricated and tested, and there was a strong correlation between simulated and measured results of antennas indoor applications parameters such as return loss, VSWR, and radiation patterns. Therefore, the obtained results show that the two proposed MIMO antennas can operate with good 2:1 VSWR impedance bandwidth, good isolation better than 18 dB between antennas elements, envelope correlation coefficient (ECC) about 0.05 across desired bands, and diversity gain (DG) of 9.992 dB. Measurement results agree well with simulation results making these antennas suitable for portable applications. 2017 2022-11-01T01:53:34Z 2022-11-01T01:53:34Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76661 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Computer and Communication Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic MIMO systems
Wireless LANs
Wireless communication systems
spellingShingle MIMO systems
Wireless LANs
Wireless communication systems
Mohannad Obaid, Katie
Dual-wideband MIMO antenna for long term evolution and wireless local area network indoor applications
description Doctor of Philosophy in Communication Engineering
author2 Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr.
author_facet Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr.
Mohannad Obaid, Katie
format Thesis
author Mohannad Obaid, Katie
author_sort Mohannad Obaid, Katie
title Dual-wideband MIMO antenna for long term evolution and wireless local area network indoor applications
title_short Dual-wideband MIMO antenna for long term evolution and wireless local area network indoor applications
title_full Dual-wideband MIMO antenna for long term evolution and wireless local area network indoor applications
title_fullStr Dual-wideband MIMO antenna for long term evolution and wireless local area network indoor applications
title_full_unstemmed Dual-wideband MIMO antenna for long term evolution and wireless local area network indoor applications
title_sort dual-wideband mimo antenna for long term evolution and wireless local area network indoor applications
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2017
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76661
_version_ 1751537936373907456
score 13.214268

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