Modifications of the cavity perturbation technique for permittivity measurements of laminated samples

摘要

New equations are derived for the measurement of microwave dielectric properties by the cavity perturbation technique. The limitation of very small sample dimension of the traditional perturbation method is avoided by these new equations. Instead of using very small bar or rod shaped samples, the presented theory can be applied to larger laminated samples for dielectric properties measurements. The accuracy of these new equations is examined by experimental measurements.