新型仿真材料及其折射率测量

Material made of cage-shaped granules of conductor (CGC) is developed. Prisms were made with the CGC material and polystyrene (PS) respectively. The refractive index of the CGC material to microwave was measured by assembling CGC prism and PS prism. The assembly greatly eliminates the displacement of the outgoing microwave caused by the diffraction. This is a key point to achieve accurate measurement of the refractive index under microwave. The CGC material has a considerable refractive ability. PS has little refractive ability. The results is useful in promoting the image technique of microwave and millimeter-wave by improving the refractive ability and eliminating detriment of the diffraction of the lens.