A Multiband Flexible Wideband CPW Wearable Slot Antenna for Biomedical and IoT Applications

This paper presents a multiband flexible wideband coplanar waveguide (CPW) wearable slot antenna for biomedical and Internet of Things (IoT) applications. The proposed antenna comprises an elliptical patch with a slot designed on top of a thin and flexible polyimide substrate of thickness 0.1 mm. CPW feeding with slotting on the ground and a protruding microstrip from the ground on one side of the patch is used to have resonance at multi-frequencies for the proposed antenna design. The measured results show that the developed antenna resonates at 2.81 GHz with an impedance bandwidth of 0.8 GHz (2.23–3.2 GHz) and at 4.43 GHz, 5.96 GHz, and 9.38 GHz with an impedance bandwidth of 6.7 GHz (3.5–10.3 GHz). The proposed antenna is simple and portable to mount on any part of the human body and obtains justified specific absorption rate (SAR) values. The prototype of the suggested antenna underwent the fabrication process. A comparison of the antenna parameters was carried out, and there was a reasonable correlation between the simulation and measured results. The proposed antenna is a good contender for Wireless Body Area Networks (WBANs) and IoT applications. © 2023, Electromagnetics Academy. All rights reserved.