The Calculations of S11 and SAR values of a Wearable Monopole Antenna with FDTD Technique:

Abstract

The calculation of S11 and specific absorption rate (SAR) of a wearable monopole antenna is presented using finite difference time domain (FDTD) technique. The antenna under investigation is a multiband antenna with four monopoles which are fed by a coplanar waveguide. The monopoles of the antenna are modeled using staircase scheme. In this work, non-uniform sampling of the FDTD cells has been used to accurately model the individual monopole of the antenna. The calculated S11 and SAR values of the antenna using FDTD method are compared with HFSS and measured results. A satisfactory agreement between the FDTD and HFSS values of S11 and SAR has validated the code developed using FDTD technique.