Measurement of complex permittivity of materials using rectangular dielectric wave guide (RDWG) technique in 5.85-8.20 Ghz range

Abstract

The Rectangular DielectricWaveguide (RDWG)Technique is an efficient technique developed for the measurement of complex permittivity of materials of various thickness and cross sectional areas over various frequency ranges by measuring the S-parameters of the device under test.In this project RDWG technique has been used along with Through- Reflect-Line(TRL) calibration to measure the complex permittivity of materials in 5.85 to 8.20GHz frequency range.Permittivity of various samples are measured with the help of S-parameters and the obtained values of permittivity is compared with the theoretically available value.The results obtained by the RDWD technique is seen to be very close to the theoretically available values and suggestions to improve the accuracy of the technique is also provided..