On-body investigation of dual band diamond textile antenna for wearable applications at 2.45 GHz and 5.8 GHz

This paper describes the design of a dual band flexible textile antenna with diamond shaped and wider bandwidth. The textile antenna is designed at 2.45GHz and 5.8 GHz Industrial, Scientific and Medical (ISM) band. The conductive copper tape is used as a conducting. In order to enhance flexibility and feel comfortable for user, the denim material is used as substrate material. This work also describes the antenna performance toward backside of human body. Detuning frequency, fluctuating bandwidth, reducing efficiency and degradation of realized gain have been identified based on simulation and measurement result. The maximum Specific Absorption Rate (SAR) is determined by varying the distance has been simulated using Microwave Studio Computer Software Technology (CST) by numerical method using human body Voxel model.