Electromagnetic wave propagation in a superconducting parallel-plate waveguide filled with an indefinite medium

Abstract The electromagnetic wave propagation is analysed in a superconducting parallel-plate waveguide filled with an indefinite medium. The dispersion relations of transverse electric and transverse magnetic wave modes are derived by using the Meissner boundary conditions. The different cases of these wave modes are discussed by choosing the appropriate signs of the anisotropic parameters of the indefinite medium. In this connection, the regions of propagation/non-propagation are numerically analysed by plotting the phase velocity versus propagation frequency.