Multi-Сircled Planar MIMO Antenna on Flexible Substrate for 5G Applications
| Authors | Fahmida Hossain1, A.K.M. Zakir Hossain1, Muhammad Ibn Ibrahimy2, Ahmed Jamal Abdullah AL-Gburi1 |
| Affiliations |
1Faculty of Electronic and Computer Engineering & Technology, Universiti Teknikal Malaysia Melaka (UTeM), 76100 Durian Tunggal, Melaka, Malaysia 2Department of Electrical and Computer Engineering, Faculty of Engineering, International Islamic University, 53100 Gombak, Malaysia |
| Е-mail | zakir@utem.edu.my |
| Issue | Volume 17, Year 2025, Number 1 |
| Dates | Received 30 October 2024; revised manuscript received 18 February 2025; published online 27 February 2025 |
| Citation | Fahmida Hossain, A.K.M. Zakir Hossain, et al., J. Nano- Electron. Phys. 17 No 1, 01010 (2025) |
| DOI | https://doi.org/10.21272/jnep.17(1).01010 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Planar microstrip, Low profile, 5G mid-band, MIMO (16) , SAR (2) . |
| Annotation |
In this article a planar microstrip multi-circle shaped antenna on flexible substrate (Kapton) has been designed and validated. The antenna is low profile with only 125 μm in hight. The antenna covers all 5G mid-bands from 3.17-6.42 GHz while exhibiting almost VSWR 1 at 3.6 GHz. For biomedical application, the antenna has been realized on the human bio tissue fantom model. The estimated specific absorption rate (SAR) is within the standards with the highest value of 1.31 W/Kg at 6 GHz. Furthermore, to check the mobile application compatibility, 4 (4 x 4) and 6 (6 x 6)-element MIMO arrays are designed and validated. Both MIMO results show port to port (P2P) isolation of below – 18.7 dB. The efficiency is always above 90 % throughout the entire bandwidth (BW). Other MIMO parameters i.e., ECC and DG are always below 0.002 and almost 10, respectively. The far-field radiation results show that the array can radiate in all directions. In addition, the 6 x 6 is exposed with the hand and the head voxel phantom model to estimate the SAR. In each cases, the SAR values are well within the standard range. |
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List of References |
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