A Compact Microstripline-Fed On-Body Matched Antenna for Wireless Medical Applications

A novel design of a flexible on-body matched microstripline-fed antenna for biomedical applications is proposed in this article. The core feature of the proposed antenna refers to its tiny dimension, bendability, low temperature co-fired ceramics (LTCC) substrate layer, impressive return loss, higher bandwidth that makes it appropriate for on-body matched wireless medical applications. The dimension of the antenna is 13.86 mm x 13.49 mm x 0.35 mm where substrate layer, LTCC layer has the thickness of 0.326 mm and on the other hand, the thickness of the radiating patch is 0.012 mm. The performance of the antenna was analyzed to operate in the Industrial, Scientific and Medical (ISM) band (2.4-2.5 GHz). Three layers of the human phantom model have been proposed as well as biocompatibility test, SAR calculations, flexibility, and several performance measurements have been utilized using CST Microwave Studio software in both curved and planar states by following different types of dielectric property matching with human tissue model. Finally, Specific Absorption Rate (SAR) is evaluated to check its feasibility and workability in wireless medical applications.