Wideband Analysis of Imaging of Dielectric-Covered Curved Surfaces for Millimeter-Wave Security Scanning

We develop a model for a dielectric-coated perfectly conducting cylinder, as imaged by a wideband millimeter-wave radar security scanning system. This model images concealed dielectric objects, when attached to realistically curved body parts, including the human arm or leg. The model is compared to that of a planar dielectric slab on a perfectly conducting plane, and it is proven to be nearly identical for dielectrics with thickness of less than half the cylinder radius.