Evaluation Koch Fractal textile antenna using different iteration toward Human Body

A Koch Fractal textile antenna are designed using denim material operating at 0.915 GHz. From the zero through second iteration, all the antennas performance in terms of return loss, bandwidth, realized gain and efficiency have been compared and analyzed. Then, on-body simulations was conducted using Voxel Human Body model in using CST Microwave software. At the same time, maximum Specific Absorption Rate (SAR) toward the backside body are discussed using two different orientations of the antenna; vertical and horizontal.