WAVE-GUIDE AND RESONATOR PERTURBATION TECHNIQUES MEASURING CHIRALITY AND NONRECIPROCITY PARAMETERS BIISOTROPIC MATERIALS

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.