APPARATUS FOR MEASURING BROADBAND COMPLEX PERMITTIVITY USING OPEN-ENDED COAXIAL PROBE AND METHOD THEREOF

摘要

Disclosed are an apparatus for measuring a wideband complex dielectric constant using an open terminal coaxial probe, and a method thereof. The apparatus for measuring a wideband complex dielectric constant comprises: a probe for sensing electromagnetic waves reflected from each of a material under test, an open calibration material, and a matching calibration material; an analyzer connected with the probe by the coaxial cable, and receiving electromagnetic waves sensed from the probe to measure a first reflection coefficient of the material under test, a second reflection coefficient of the open calibration material, and a third reflection coefficient of the matching calibration material based on the received electromagnetic waves; and a terminal estimating a fourth reflection coefficient of a short-circuit calibration material based on the measured second reflection coefficient, and calculating the complex dielectric constant of the material under test based on the estimated fourth reflection constant, the measured first reflection coefficient, the measured second reflection coefficient, and the measured third reflection coefficient.