Novel reflectometer for millimeter wave 3D holographic imaging

Small, portable, and low-cost millimeter wave imaging systems are desired in many nondestructive testing and imaging applications, as these system are capable of producing high-resolution images of interior of composite structures. Typically, systems capable of producing holographic three-dimensional images incorporate expensive and bulky wideband heterodyne coherent reflectometers or vector network analyzers. This paper presents a novel wideband, small, and low-cost reflectometer capable of producing holographic three-dimensional millimeter wave images.