Wide band antenna for 5G NR FR2 bands and performance analysis for on-body application.

This paper introduces a concise 5G wideband antenna engineered for on body communication functioning within the Ka band spectrum. The antenna design showcases a U-shaped radiator patch paired with partial ground and a transformer impedance feedline. Firstly, the antenna performance is simulated in a free space environment, revealing a resonant frequency of 32 GHz, aligning with the n257, n258, n261 frequency range of 5G. With dimensions measuring 5.5mm ×8.5 mm, the proposed antenna claims an expansive impedance bandwidth exceeding 11 GHz (24-35 GHz). Operating at its resonant frequency, the antenna demonstrates a gain of 2.66 dBi and radiates unidirectional. This antenna design is tailored for utilization in body area network applications. To evaluate its efficacy in on-body scenarios, a virtual model resembling muscle-equivalent human tissue was developed. The antenna's performance when positioned in proximity to the body model was analyzed. The outcomes of the on-body simulations exhibit a reflection coefficient of 18 dB at 32 GHz, indicating favorable impedance matching. The simulated on-body gain registers at 5.49 dBi with SAR value of 1.11 W/Kg. for 1mW input power. The antenna was situated at distinct distances from the human model, and the ensuing results were compared to assess the influence of distance. Overall, the on-body simulations yield consistent outcomes with minor deviations, even when varying the distance between the antenna and the human body model. [ABSTRACT FROM AUTHOR]