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

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.