Full-wave analysis of high-T/sub c/ superconductor patch antenna on lossy bi-anisotropic substrates

A general analysis technique for the high-T/sub c/ superconductor patch antenna on lossy bi-anisotropic substrates is presented. The extended spectral domain immitance approach is combined with the concept of imperfect conductors imbedded in layered anisotropic media. A novel decoupling procedure for the electric and magnetic field is developed which makes it possible to arrive at closed-form impedance dyadic Green´s functions in the spectral domain for bi-anisotropic cases. The results presented achieve excellent agreement with previously published data and demonstrate the feasibility of the method. The numerical results show that the Q-factor of patch antennas can be significantly improved by replacing the conventional conductor with high-T/sub c/ superconducting material, whereas this has negligible influence on the resonant frequency.<>