Effects of inter element spacing on large antenna array characteristics

Muhamad Adnan, Noor Hidayah and Islam, Md. Rafiqul and Alam, A. H. M. Zahirul (2018) Effects of inter element spacing on large antenna array characteristics. In: 2017 IEEE International Conference on Smart Instrumentation, Measurement and Applications, 28-30 November 2017, Putrajaya.

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Abstract

Large-scale antenna arrays have been the current interest in the study of massive MIMO as a promising technology for 5G. Planar arrays have become the suitable antenna array configurations for massive MIMO since they provide directive beams. In this paper, planar array is proposed with square and rectangular arrangements based on 2 x 2 antenna elements as one subarray. Then, array factor (AF) for the planar array based on the subarray with up to 64 antenna elements is calculated to analyze the effects of inter element spacing on large antenna array characteristics. It is observed that large number of antenna elements contribute to large number of side lobes in the AF pattern and higher directivity at the expense of narrower HPBW. Inter element spacing less than 0.5λ produces lower directivity and higher HPBW. Therefore, inter element spacing equal or larger than 0.5λ is suitable to achieve higher directivity for large antenna array applications.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	3802/61018
Uncontrolled Keywords:	—large antenna array, planar array, array factor, inter element spacing, directivity, half power beamwidth (HPBW)
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication. Including telegraphy, radio, radar, television
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr. Md. Rafiqul Islam
Date Deposited:	11 Jan 2018 10:00
Last Modified:	08 Nov 2018 16:44
URI:	http://irep.iium.edu.my/id/eprint/61018

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