• B. Vijay Prakash
• B. Venkatasai Neeraj
• B. Naga Narasimha Rao
• CH. Dinesh

The complete coverage of the operating frequency bands from microwave bands to enable fifth-generation (5G) Internet of Things (IoT) systems to operate across microwave and millimeter-wave frequency bands, a versatile multiband antenna has been developed. This antenna covers frequencies ranging from microwave (2.5/3.5/5.5/7.5 GHz) to mm-wave (23–31 GHz), and features a 4-port MIMO configuration with pattern diversity for comprehensive 360-degree coverage in 5G IoT applications. The multiband capability is achieved through the integration of well-designed quarter-wavelength stubs. Across critical frequency ranges like 2.3–2.6 GHz, 3.2–3.8 GHz, 5.0–6.1 GHz, and 7.1–8. GHz (with |S11| < –10 dB), the antenna demonstrates strong performance, while also effectively operating within the 23–31 GHz mm-wave band with desired radiation properties. Notably, the antenna exhibits over 95% radiation efficiency and consistent gain characteristics (> 2.5 dBi at microwave bands and 6.5 dBi at mm-wave bands). Additionally, the antenna design extends to a 2 × 2 MIMO setup. This antenna module is well-suited for 5G IoT applications, particularly in indoor environments such as smart homes, offices, and vehicle-to-everything communications

"INTEGRATED MICROWAVE AND mm-WAVE MIMO ANTENNA SYSTEM ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 4, page no.j138-j142, April-2024, Available :http://www.jetir.org/papers/JETIR2404916.pdf

"INTEGRATED MICROWAVE AND mm-WAVE MIMO ANTENNA SYSTEM ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 4, page no. ppj138-j142, April-2024, Available at : http://www.jetir.org/papers/JETIR2404916.pdf