Measurements of effective dielectric permittivity of microstrip-line-type liquid crystal devices using inductive coupled ring resonator

The effective dielectric permittivity of microstrip-line-type liquid crystal devices was determined in the 3-33 GHz frequency range by using a newly developed inductive coupled ring resonator. The frequency performance of ε´_|| and ε´_⊥ can be obtained from the measured and simulated resonant frequencies of an inductive coupled ring resonator with or without a DC electric field E₀.