Materials for application in millimeter and submillimeter ranges

Properties of different MM wave materials (liquid and solid dielectrics, semiconductors, ferrites, composite, building, natural and common use materials) at millimeter and submillimeter wavelengths are presented. These properties are of great interest for millimeter and submillimeter guiding and antenna systems including passive and active devices inserted in such systems, for millimeter and submillimeter propagation especially for indoor propagation, as well for introscopy problems and for materials and media content testing (first of all for aquametry). Here we present the results of our investigation at frequencies from 30 to 500 GHz of the complex refractive index for low loss and lossy dielectrics. For ferroelectrics, semiconductors, and ferrites, components of the ferrite permeability tensor were determined as well. For some kinds of artificial materials, e.g. clothing, effective refractive index, and transmission and reflection coefficients were measured