2.4 GHz Antenna Design for Tumor Detection on Flexible Substrate for On-body Biomedical Application

Abstract

The flexible and wearable technology have been involved in the recent technology and attracted a large amount of importance in various applications viz. antenna, sensor, biomedical, and communication. It offers stretchable, bendable, and foldable features. In this paper, a flexible antenna resonating at 2.4 GHz is proposed for on-body biomedical application particularly for tumor detection. It is designed on the flexible polyimide substrate having dielectric constant $(\varepsilon_{r})=3.5$ and loss tangent $(tan\ \delta)=0.001$. For the detection of tumor, the reflection coefficient ($\vert S_{11}\vert$), gain, and specific absorption rate (SAR) parameters are analyzed for conventional human tissue. Further, by varying the size of tumor in human tissue, the antenna results are presented.