A high-efficiency measurement system for the complex permittivity characterization of materials at UHF band

Abstract

A fast and high-efficiency test approach for the complex permittivity characterization of flaky materials in UHF band is presented in this paper. A planar microstrip resonance sensor with two test ports is designed, simulated and optimized. In this approach, only two parameters are required to test for the determination of complex permittivity, namely, resonant frequency and 10 dB bandwidth. Experimental and measured results show that this approach is characterized by convenient test procedure, high efficient data collection, and higher accuracy for fast measurement of the complex permittivity for different type of flaky materials.