Computational modeling and parametric analysis of an implantable patch antenna using finite-difference time-domain algorithm

Abstract

A bio-compatible implantable microstrip patch antenna is designed and analyzed for Implant Communications Services using the finite-difference time-domain (FDTD) method. The space in the patch area of the basic spiral antenna is efficiently used and hence modified. Here, the modified antenna represents a simple structure and is found to have higher gain, lower return loss, lower specific absorption rate (SAR), and a high radiation efficiency of about 73%. The performance characteristics of the antenna have also been evaluated using FEKO software, and the results are compared.