| With the rapid development of wireless communication technology,the performance requirements of front-end antennas for communication systems are diversified and complex.For this reason,some researchers have introduced intelligent optimization algorithms into antenna design to solve the problems related to the design of antenna units with unique performance and beam assignment of arrays.In this paper,two singular directional map antennas are designed based on genetic algorithm combined with material distribution method,and then the genetic algorithm is applied to the grid flap suppression of antenna arrays,the main contents are:1,based on genetic algorithm and material distribution method,two antennas are designed.Different from the traditional design method,this method directly reconstructs the electric field distribution of the patch to achieve the effect of changing the directional map and reflection coefficient.Firstly,a large-aperture microstrip patch antenna with 1λ* 1λ aperture plane is designed,and the algorithm is optimized to finally obtain a good gain at the operating frequency point.Secondly,a broadband high-gain microstrip patch antenna is designed,which is loaded with several short-circuit through-holes to change the electric field,and the optimized final result has a bandwidth greater than 10% and a high gain in the working frequency band.2,two overlays are placed above a periodic line array with an array element spacing of 0.66λ,the first overlay is a patch overlay with four parasitic patches above each radiating patch,and the second overlay is a pixel layer with 5*5 pixel patches above each radiating patch.In the parasitic patch overlay,the position of the parasitic patch is changed to guide the directional map change,and this structure can better enhance the directional coefficient of the antenna,but it is less effective in deflecting the directional map of the antenna.In the pixel layer,the coupling energy of the pixel layer patch is changed by changing the connection state of the pixel patch in order to change the directional map of the antenna.Eventually both structures effectively reduce the gate flap for larger angle scan. |
