In this paper, a rotated Y-shaped antenna is designed and compared in terms of performance using a conventional and EBG ground planes for future Fifth Generation (5G) cellular communication system. The rotated Y-shaped antenna is designed to transmit at 38 GHz which is one of the most prominent candidate bands for future 5G communication systems. In the design of conventional antenna and metamaterial surfaces (mushroom, slotted), Rogers-5880 substrate having relative permittivity, thickness and

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... loss tangent of 2.2, 0.254 mm, and 0.0009 respectively have been used. The conventional rotated Y-shaped antenna offers a satisfactory wider bandwidth (0.87 GHz) at 38.06 GHz frequency band, which gets further improved using the EBG surfaces (mushroom, slotted) as a ground plane by 1.23 GHz and 0.97 GHz respectively. Similarly, the conventional 5G antenna radiates efficiently with an efficiency of 88% and is increased by using the EBG surfaces (slotted, mushroom-like) to 90% and 94% respectively at the desired resonant frequency band. The conventional antenna yields a bore side gain of 6.59 dB which is further enhanced up to 8.91dB and 7.50 dB by using mushroom-like and slotted EBG surfaces respectively as a ground plane. The proposed rotated Y-shaped antenna and EBG surfaces (mushroom, slotted) are analyzed using the Finite Integration Technique (FIT) employed in Computer Simulation Technology (CST) software. The designed antenna is applicable for future 5G applications. .pk. Ahmad, A.; Faisal, F.; Khan, S.; Ullah, S.; Ali, U. (2015): Performance analysis of a wearable and dual band planar antenna using a mushroom-like electromagnetic bandgap (EBG) ground plane. IEEE International Conference on Open Source Systems and Technologies, pp. 24-29. Alam, Md. S.; Misran, N.; Yatim, B.; Islam, M. T. (2013): Development of electromagnetic band gap structures in the perspective of microstrip antenna design. Ullah, S.; Khan, S.; Flint, J. A. (2014): Comparative study of rectangular microstrip patch antenna on various types of metamaterials surfaces. IEEE International Conference on Open Source Systems and Technologie, pp. 186-191. Ali, U.; Ullah, S.; Shafi, M.; Shah, S. A. A.; Shah, I. A. et al. (2019): Design and comparative analysis of conventional and metamaterial-based textile antennas for wearable applications. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, e2567. Alkaraki, S.; Andy, A. S.; Gao, Y.; Tong, K. F.; Ying, Z. et al. (2018): Compact and low cost 3D-printed antennas metalized using spray-coating technology for 5G mm-wave communication systems. Li, Y.; Fu, H.; Ma, J.; Chen, W. et al. (2018): Low-profile and wideband microstrip antenna with stable gain for 5G wireless applications. ; Yang, C.; Chang, C.; Liao, W.; Cho, L. et al. (2016): Pattern reconfigurable millimeter-wave antenna design for 5G handset applications. IEEE 10th European Conference on Antenna and Propagation, pp. 1-3. of wideband reflectarray antennas for 5G communication systems. IEEE Access, vol. 5, pp. 17803-17815. Essid, C.; Samet, A. (2017): A design of phased array antenna with metamaterial circular SRR for 5G applications. Tsiflikiotis, A.; Babas, D.; Siakavara, K.; Kalialakis, C. et al. (2017): Evolutionary design of a dual band E-shaped patch antenna for 5G mobile communications. IEEE 6th International Conference on Modern Circuits and Systems Technologies, pp. 1-4. Haraz, O. M.; Elboushi, A.; Alshebeili, S. A.; Sebak, A. R. (2014): Dense dielectric patch array antenna with improved radiation characteristics using EBG ground structure and dielectric superstrate for future 5G cellular networks. Baek, K. H.; Ko, S. (2017): Millimeter-wave 5G antennas for smartphones: overview and experimental demonstration. IEEE Transactions on Antennas and Propagation, vol. 65, no. 12, pp. 6250-6261. Iqbal, A.; Saraereh, O. A.; Bouazizi, A.; Basir, A. (2018): Metamaterial-based highly isolated MIMO antenna for portable wireless applications. Electronics, vol. 7, no. 10, pp. 267. Jiang, H.; Si, L. M.; Hu, W.; Lv, X. (2019): A symmetrical dual-beam bowtie antenna with gain enhancement using metamaterial for 5G MIMO applications. Abbas, S. M.; Esselle, K. P.; Alomainy, A. (2015): Millimeter-wave frequency reconfigurable T-shaped antenna for 5G networks. Ahmad, N.; Wahid, M.; Naeem, M.; Baloch, B. (2015): Design of circular stud antenna and parametric analysis. Rehman, A.; Ahmad, N.; Naeem, M. (2015): The reduction of specific absorption rate at different frequencies. Journal of Engineering and Applied Sciences, vol. 34, no. 2, pp. 71-75. Khan, J.; Sehrai, D. A.; Ahmad, S. (2018): Design and performance comparison of metamaterial based antenna for 4G/5G mobile devices.