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Miniature EBG two U-shaped slot PIFA MIMO antennas for WLAN applications

Z. Abidin, Z. and Shah, S. M. and Ma, Y. (2017) Miniature EBG two U-shaped slot PIFA MIMO antennas for WLAN applications. In: Antenna Fundamentals for Legacy Mobile Applications and Beyond. Springer International Publishing AG, pp. 159-172. ISBN 9783319639673

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Abstract

At present, electromagnetic band gap (EBG) materials are rapidly advancing in electromagnetic (EM) research area. The EBG structures are broadly categorized as metamaterials with attractive properties that unavailable in nature. The materials have attracted much consideration and are widely used for improving the electromagnetic performance. EBG materials belong to the unique class of artificially fabricated structures that have the ability to control and manipulate the propagation of EM waves to produce forbidden frequency gaps where the propagation is prohibited [1, 2], hence resulting in improving the gain and reducing mutual coupling of antennas in an array configuration. The EBG structures are typically realized by a periodic arrangement of dielectric materials and metallic conductors either in one-, two-, or three-dimensional manners which can be characterized by stop band and pass band. EBG structure can be considered as the perfect magnetic conductor (PMC), which means that the distance between the antenna and the EBG can be less than λ/4 (Fig. 8.1) which makes it possible to be implemented on the low profile antenna [3]. Compared to the antennas with the perfect electric conductor (PEC), the separation between it should be greater than λ/4 (Fig. 8.2) for the antenna to radiate efficiently. This is due to the fact that the EBG surface reflects all power just like a PEC, but it reflects in-phase, rather than out-of-phase and thus, allowing the radiating element to be directly adjacent to the surface.

Item Type: Book Section
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics
Divisions: Faculty of Electrical and Electronic Engineering > Department of Communication Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 11 Feb 2019 00:51
Last Modified: 11 Feb 2019 00:51
URI: http://eprints.uthm.edu.my/id/eprint/10579
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