A monostatic coded aperture reflectometer for imaging at submillimeter-wavelengths

A prototype imaging reflectometer based on the coded aperture technique and operating in the WR-1.5 (500-750 GHz) frequency band is described. Masks for the coded aperture system are realized through optical modulation of the conductivity of a high-resistivity silicon wafer. A network model representation of the imaging system is developed and applied to measuring beam maps of a submillimeter-wave diagonal horn...