METHOD FOR MEASURING DIRECTIONAL PROPERTY OF ANISOTROPIC MATERIAL USING ELECTROMAGNETIC WAVE

摘要

PURPOSE:To simplify the titled measuring method with high accuracy by making a linearly polarized electromagnetic wave incident on a tested material and detecting the intensity of a crossed polarized wave component generated due to the anisotropy of the tested material on the basis of a reflected wave or transmitted wave from the tested material. CONSTITUTION:An electromagnetic wave generated from an electromagnetic wave oscillator is made incident on an input terminal of a polarization coupler through a square waveguide, converted into a reference mode of the circular waveguide in the polarization coupler and then made incident on the tested material S as a linearly polarized wave Ei through a conical horn antenna A connected to its output terminal. The tested material S reflects a part of the incident electromagnetic wave and the horn antenna A receives the reflected light and separates a component Epr having the same polarized wave as that of the incident wave and a crossed polarized component Ecr having a polarized component rectangular to the component Epr to measure the component Ecr. In addition, measurement based upon a transmission method can be similarly performed and the simultaneous detection of the crossed polarized components of both the reflected wave and transmitted wave can be also attained.