Self-Isolated Dual-Band MIMO Antenna for Improved Diversity in ISM Band and Wireless Applications
| Authors | Ajay Kumar Maddirala, Bappadittya Roy |
| Affiliations |
VIT AP University, Amaravathi, Andhra Pradesh, India |
| Е-mail | bappadittya.roy@vitap.ac.in |
| Issue | Volume 17, Year 2025, Number 5 |
| Dates | Received 15 August 2025; revised manuscript received 19 October 2025; published online 30 October 2025 |
| Citation | Ajay Kumar Maddirala, Bappadittya Roy, J. Nano- Electron. Phys. 17 No 5, 05031 (2025) |
| DOI | https://doi.org/10.21272/jnep.17(5).05031 |
| PACS Number(s) | 73.61.Jc, 71.20.Mq, |
| Keywords | MIMO (23) , Diversity parameters, ISM (34) , Self-isolation. |
| Annotation |
In this article, a self-isolated dual-band MIMO antenna for improved diversity in ISM and wireless applications is proposed. An orthogonally structured dual-port MIMO antenna, incorporating a meander line patch, is introduced. The antenna is constructed on an FR4 substrate with overall dimensions of 0.272 0.56 0.0128 at 2.4 GHz. It resonates at dual bands, 2.40 GHz and 3.73 GHz, catering to ISM and C-band applications. The orthogonal orientation enhances isolation between the antenna elements, achieving a self-isolation level of – 18 dB. To evaluate the antenna's diversity capabilities, MIMO performance parameters such as diversity gain (DG) and envelope correlation coefficient (ECC) were calculated. The simulated results demonstrate excellent diversity performance, with an ECC of 0.01 and a DG of 9.989. Additionally, the antenna achieves an efficiency of over 85 %, with gains of 3.4 dBi for the ISM band and 4.1 dBi for the 5G C-band. With its compact dimensions, dual-band functionality, high isolation, and superior performance metrics, the proposed MIMO antenna stands out as a promising solution for next-generation dual-band wireless communication systems, particularly for ISM and 5G applications. Moreover, the measured and simulated radiation patterns exhibit stable directional patterns in the E-plane and consistent omnidirectional coverage in the H-plane, underscoring its reliability for real-world applications. |
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List of References |
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