Strong directivity antenna array design method and system

The invention belongs to the technical field of communication, and discloses a method and a system for designing a strong directivity antenna array based on a metal band gap structure EMNZ medium, which are characterized in that an aluminum waveguide with half-wavelength height is designed, and the working frequency is regulated to be the cut-off frequency of the waveguide, so that the TE10 mode wave is equivalent to an ENZ waveguide when being fed in. Furthermore, the waveguide is filled with an aluminum block to form an EMNZ structure, and the side wall of the waveguide is slotted to form a radiation cavity, so that an antenna array is constructed. According to the method, aluminum block filling and waveguide slotting are accurately designed, electric field distribution and impedance matching are optimized, and the antenna performance is simulated and verified. On the basis of the method, a ten-element antenna array and a seven-element planar antenna array which are arranged at equal intervals and unequal i