Abstract
The theoretical calculation, simulation, and two experimental methods using microwave rectangular cavity are shown in this thesis for measuring the complex permittivity of dielectrics. The two experimental methods are perturbation and cavity methods. The measurements of resonant frequency and Q-factor were conducted in empty and loaded rectangular metallic cavities with TE101 and TE102 modes using HP8510 network analyzer. Teflon was used to verify simulation data at Ka-band. The deviations between simulation and experimental results using cavity method are 1.9% and 34% for real part and tan□ of complex permittivity, respectively. The experimental results using perturbation method were almost the same as that reported in many previous articles.