Investigation of crumpling effects on EM absorption and antenna performance at 2.4 GHz

This paper discusses the performance and SAR of dipole textile antenna under different crumpling conditions in the presence of human body close to the radiation source. The numerical simulations of the realistic complex two dimensional crumpling is performed by using Finite Integration Technique (FIT) which is applied in Computer Simulation Technology (CST) Microwave Studio. A realistic heterogeneous Voxel body model is used in the simulation and has been exposed to a simple dipole textile antenna at 2.4 GHz. Results have been compared with equivalent homogeneous model to further validate the results. The results obtained show that the antenna crumpling has prominent effect on the antenna performance and could enhance the 10 g SAR up to 18.2 % from the reference SAR (flat condition). Hence, the antenna crumpling may contribute to higher penetration of the radiation through human body tissue.