Effects of dimensions variation to the results of microstrip ring resonator method used on determination of dielectric properties

Printed wiring boards are often important components of antenna applications. In this article, effects of dimension variation of the microstrip ring resonator structure on the determination results are experimentally studied. The calculation equations, which are used to produce values of dielectric constant and loss tangent, are presented in Heinola et al. (2004). A measurement structure, which includes several two-port microstrip ring resonators, is presented.