photonic crystals;  polarization filtering;  Film materials

According to the periodic structure of the two-dimensional photonic crystal, the antenna signal in mobile communication is compensated, and for the electromagnetic wave, the dielectric constant contrast is like the periodic potential of electrons in the crystal. Based on the electronic micrography, the metal oxide compensation material made by substrate etching technology through photoresist is pressed into a thin film structure, and the periodic arrangement structure formed by two-dimensional photonic crystals is used to make thin film materials. Filter the RF ferry. The electric field distribution on the surface of the dielectric layer can be obtained by the boundary conditions, and the TE wave and TM crossing of the material surface are analyzed separately. The traditional optical crystal compensation structure is realized through common materials and mature manufacturing technology, which reduces the deviation formed by the antenna in different directions and enhances the corresponding polarization transmission intensity.