MIMO antenna for Smart Hubs and IoT Gateways

In the era of Industry 4.0 and ubiquitous connectivity, reliable and high-throughput wireless communication is essential for Industrial Internet of Things (IIoT) and smart gateway systems. This work presents the design of a compact, four-element Multiple-Input Multiple-Output (MIMO) microstrip patch antenna that operates at 2.4 GHz, intended for industrial gateway and Internet of Things applications. The suggested antenna array is integrated within a 120 mm × 120 mm flat substrate to provide compatibility with common industrial enclosures while maintaining optimal MIMO performance. For steady radiation patterns, low mutual coupling, and high isolation, each antenna element is optimized to suit multipath- rich, electromagnetically noisy settings, which are most common in factories and process control systems. Because of the design’s support for spatial diversity, highly populated device networks can benefit from improved link reliability, low-latency data transmission, and strong connectivity. Performance evaluations of the proposed antenna show a bandwidth of(≥50 MHz), a peak gain of 5.49 dBi, and an envelope correlation coefficient (ECC) of < 0.01, DG of ∼ 10 dB, CCL of < 0.5; these results confirm the antenna’s usefulness for advanced wireless protocols such as Wi-Fi 4/5/6, Zigbee, BLE, and proprietary IoT stacks. Reliable machine-to-machine (M2M) communication, real-time monitoring, and scalable network designs are made possible by the suggested MIMO antenna, which presents a potential solution for next-generation industrial gateways.