Compact Textile Wideband Antenna for Wearable Microwave Stroke Imaging

This paper proposes the design of a low-profile compact textile antenna for wearable microwave stroke imaging systems. The antenna is designed on flexible polyester fabrics and can be printed with silver conductive inks. Because the operating bandwidth of conventional monopole antennas can hardly meet the requirements for the microwave stroke imaging applications, two triangles and a few parallel slots are cut at the bottom corners and the top edge of the antenna’s radiation patch, respectively, to increase the current path of the proposed antenna. The simulation shows that the proposed antenna has an ultra-wide –10-dB operating bandwidth of 125% from 1.13–4.88 GHz, a reasonably high radiation gain and dipole-like radiation patterns. The simulation further proves that the antenna can maintain a wide bandwidth and promising gain when it is working in the proximity of human bodies.