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On the Performance of a Photonic Reconfigurable Electromagnetic Band Gap Antenna Array for 5G Applications

Elwi, Taha A.; Taher, Fatma; Virdee, Bal S.; Alibakhshikenari, Mohammad; Zuazola, Ignacio Garcia; Krasniqi, Astrit; Kamel, Amna S.; Tokan, Nurhan Türker; Khan, Salahuddin; Parchin, Naser Ojaroudi; Livreri, Patrizia; Dayoub, Iyad; Pau, Giovanni; Aïssa, Sonia; Limiti, Ernesto; Sree, Mohamed Fathy Abo

Authors

Taha A. Elwi

Fatma Taher

Bal S. Virdee

Mohammad Alibakhshikenari

Ignacio Garcia Zuazola

Astrit Krasniqi

Amna S. Kamel

Nurhan Türker Tokan

Salahuddin Khan

Patrizia Livreri

Iyad Dayoub

Giovanni Pau

Sonia Aïssa

Ernesto Limiti

Mohamed Fathy Abo Sree



Abstract

In this paper, a reconfigurable Multiple-Input Multiple-Output (MIMO) antenna array is presented for 5G portable devices. The proposed array consists of four radiating elements and an Electromagnetic Band Gap (EBG) structure. Planar monopole radiating elements are employed in the array with Coplanar Waveguide Ports (CWPs). Each CWP is grounded on one side to a reflecting L-shaped structure that has an effect of improving the antenna’s directivity. It is shown that by inductively connecting Minkowski fractal structure of 1 st order to the radiating element, the impedance matching is improved that results in enhancement in the array’s bandwidth performance. The EBG structure is used to provide the isolation between antenna elements in the MIMO array. The fractal structure is connected to the L-shaped reflector through four photosensitive light dependent resistor (LDR) switches. The effect of various LDR switching configurations on the performance of the antenna is investigated. The proposed array provides a novel performance in terms of S-parameters with enhancements in the radiation properties. Such enhancements are achieved with low separation gaps between antenna elements (about λ o /16 at 3.5 GHz). It is shown that the array’s operational bands centered at 3.5 GHz and 4.65 GHz can be selected by activating certain LDR switches. The electromagnetic exposure of the array on the human body is investigated by determining the specific absorption rate (SAR). It is found that the proposed antenna shows lower SAR values compared to other antennas reported in literature. With the proposed EBG structure, the gain of the array is increased 7.5 dB (from -3.5 dBi to +4 dBi) at 3.5 GHz and by 14.3 dB (from -8.7 dBi to + 5.6 dBi) at 4.65 GHz. The average radiation efficiency between 3.5 GHz and 5.5 GHz increased by 42% from 20% to 62%. Excellent radiation characteristics of the EBG the array makes it suitable for 5G portable devices such as tablets.

Citation

Elwi, T. A., Taher, F., Virdee, B. S., Alibakhshikenari, M., Zuazola, I. G., Krasniqi, A., Kamel, A. S., Tokan, N. T., Khan, S., Parchin, N. O., Livreri, P., Dayoub, I., Pau, G., Aïssa, S., Limiti, E., & Sree, M. F. A. (2024). On the Performance of a Photonic Reconfigurable Electromagnetic Band Gap Antenna Array for 5G Applications. IEEE Access, 12, 60849-60862. https://doi.org/10.1109/access.2024.3392368

Journal Article Type Article
Acceptance Date Apr 17, 2024
Online Publication Date Apr 22, 2024
Publication Date 2024
Deposit Date Apr 29, 2024
Publicly Available Date Apr 29, 2024
Journal IEEE Access
Electronic ISSN 2169-3536
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 12
Pages 60849-60862
DOI https://doi.org/10.1109/access.2024.3392368
Keywords Electromagnetic Band Gap (EBG), multiple-input multiple-output (MIMO), 5G system, antenna arrays, specific absorption rate (SAR), photosensitive light dependent resistor (LDR)
Public URL http://researchrepository.napier.ac.uk/Output/3602203

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