Development of a high-frequency dielectric spectrometer using a portable vector network analyzer

Rev Sci Instrum. 2024 Feb 1;95(2):023903. doi: 10.1063/5.0177065.

Abstract

A simple and novel setup for high-frequency dielectric spectroscopy of materials has been developed using a portable vector network analyzer. The measurement principle is based on radio frequency reflectometry, and both its capabilities and limitations are discussed. The results obtained on a typical liquid crystal prove that the device can provide reliable spectra between 107 and 109 Hz, thus extending the capabilities of conventional impedance analyzers.