Body-coupled, wideband antennas

In this paper we present antenna solutions for maximizing microwave energy release into the human body. Reflections from the body surface are avoided by coupling the antennas to the body using low-loss ceramic composites. Both 3D and 2D antenna topologies are explored for transcutaneous radar measurements. Coupled antennas combined with low-loss dielectric materials are explored for maximum energy transfer. A novel 3D printed, light-weighted and low-cost antenna is made for improved directivity and reduced interference. Reactive near-field loss of body-coupled antennas is reduced using low-loss ceramics. Aiming at a multi-static radar instrument for functional brain impedance imaging, a less challenging, single-radar instrument for left ventricle assessment is explored for antenna evaluation in this paper. Simulations of 2D and 3D antennas as well as measured results of 2D antenna is provided.