Electro-textile printed slot antenna over finite EBG structure

This paper reports an electro-textile antenna fed by a thin coaxial cable, based on a monopole like element and a rectangular slot with a triangular transition on a ground plane. The structure resembles a printed slot antenna with two electro-textile layers and common felt used as dielectric. Prototypes were fabricated and measured for an isolated antenna and in the vicinity of a user´s limb. The antenna was designed for central frequency 2.45 GHz. A simplified simulation model was used to emulate the effect of the user´s limb on the antenna performance. To improve antenna radiation and total efficiency an EBG inspired structure was included in the design. The new structure was numerically simulated and measured in wearing scenario in the vicinity of the human body.