Wearable Electromagnetic Head Imaging Using Magnetic-based Antenna Arrays

A wearable electromagnetic head imaging system for brain bleeding detection using a flexible magnetic-based antenna array is presented. The antenna arrays in a wearable strap-like structure are designed on a polymer magnetic composite substrate with a dielectric permittivity of 5.5, and magnetic permeability of 4. The antenna consists of a conventional rectangular patch with row of shorting pins. The combination of the remarkable magnetic properties material and the shorting pins results in a compact, unidirectional and wideband (0.72 GHz- 1.58 GHz) antenna that satisfies the requirement of the electromagnetic imaging system. A 24-array of antenna is embedded inside the substrate in the form of a wearable strap that can fit an average human head. The antenna arrays are preliminarily evaluated on an average head model using CST software. The simulation-based constructed images of bleeding emulating target using a confocal image algorithm indicate the possibility of using such approach as a wearable system to detect bleeding inside the brain.