Sa. Tretyakov et Aj. Viitanen, WAVE-GUIDE AND RESONATOR PERTURBATION TECHNIQUES MEASURING CHIRALITY AND NONRECIPROCITY PARAMETERS BIISOTROPIC MATERIALS, IEEE transactions on microwave theory and techniques, 43(1), 1995, pp. 222-225
Waveguide and resonator perturbation techniques are considered for det
ermining electromagnetic parameters of general biisotropic, or nonreci
procal chiral, materials. The biisotropic materials are the most gener
al linear isotropic media, whose constitutive relations are governed b
y four complex material parameters. The material parameters of biisotr
opic media ran be obtained through measuring the change in the propaga
tion constant of waveguide modes or measuring the shift in the resonan
t frequency for resonators with perturbation techniques. To measure th
ese parameters a method utilizing waveguides or cavity resonators with
two degenerate modes is proposed.