8-port MIMO antenna at 27 GHz for n261 band and exploring for body centric communication

• DOI: 10.1371/journal.pone.0305524
• Publication Date: 2024-06-20T17:37:26Z
• Authors: Anupma Gupta; Meet Kumari; Manish Sharma; Mohammed H. Alsharif; Peerapong Uthansakul; Monthippa Uthansakul; Shonak Bansal
• Keywords: Patch antenna; Ground plane

This paper presents a compact 5G wideband antenna designed for body-centric networks (BCN. The single element design includes simple T-shaped radiator patch with ring shaped ground plane and transformer impedance feedline. First, the was simulated in free-space, its resonant frequency is found to be 27 GHz, falling within 5G’s n261 band. proposed has size of 23.375 mm 3 , it offers wide bandwidth 2.0 GHz (26–28 GHz). Parametric studies demonstrated that by increasing length slots patch, can reduced further. Single used as 8-element MIMO structure. Parallel adjacent X-direction minimal coupling effect, whereas placed Y-direction high effect. Thus, etching wall plane. It alters surface current interference limits investigated use body area network applications. To evaluate on-body performance, an equivalent model virtually developed. performance assessed placing close proximity model. Stable robust achieved operation. At point, exhibits reflection coefficient -30 dB (free space) -40 (on-body), isolation above 20 between radiators 30 other radiators. Antenna stable different tissues on non-planar structures. Bidirectional radiation pattern gain 2.53 broadside type orientations 4.64 are free space operations respectively. low specific absorption rate makes safe health care devices. Further, diversity measured terms envelope correlation (ECC), (DG). Maximum Value ECC 0.005 minimum value DG 9.97 at which confirms excellence