The Quasi-Optical Waveguide Modeling Method for the Measurements of Scattering Matrix Elements in the Near-Millimeter and Submillimeter Wave Bands

A possibility of applying the quasi-optical waveguide modeling (QWM) method in an effort to look into the polarization characteristics of backward scattering from physical objects or their scale models under the laboratory conditions over the near-millimeter and submillimeter e.m. spectrum region has been experimentally substantiated. It is exactly with the aim of implementing this particular method that a quasi-optical polarimetric microcompact range (PMCR) based on a circular hollow dielectric beamguide (HDW), quasi-optical and waveguide devices and channel components have been developed. The measurement data on the amplitude and phase backscattering patterns of a standard object have been gained using the PMCK in different polarization bases over the 4-mm wave band. Additionally, for comparison purpose the respective theoretically grounded numerical modeling data featuring the QWM method potential are likewise presented.