IEC 63185 pdf – Measurement of the complex permittivity for low-loss dielectric substrates balanced-type circular disk resonator method 1 Scope This document relates to a measurement method for complexpermittivity of a dielectricsubstrates at microwave and millimeter-wave frequencies.This method has been developed to evaluate the dielectric properties of low-loss materials used in microwave and millimeter-wavecircuits and devices. It uses higher-order modes...