Given the anisotropy of the proposed metasurface, the Stokes parameters were used to analyze the polarization state of the transmitted wave. In equations (14), (15), χ and η are related to the phase. Fig. 9(a) illustrates the components of co- and cross-polarized transmission phases. Notably, the values of txx and tyx span from 180° to −180°. At 7.61 GHz, the txx curve transitions from negative to positive, while the tyx curve gradually decreases. Furthermore, the phase difference between txx
