国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

In order to improve the scanning performance of planar lens antenna to realize the practical application in multi-beam, a single-focus lens antenna was designed firstly. For the problem that the gain of single-focus planar lens antenna decreases too fast during large-angle scanning, a bifocal design method in the reflective array and the conventional dielectric lens is innovatively introduced. Based on the theory of array antenna synthesis, the radiation characteristics of bifocal lens antenna are theoretically calculated. The planar lens antenna was modeled bye Metallic Hole Arrays unit, and the scanning radiation characteristics of the single-focus lens and the bifocal lens antenna were simulated and compared. The results show that the minimum gain of the bifocal lens antenna is significantly improved compared with the single-focus lens antenna in the scanning range(0°-27°), and the shape of the large angle scanning pattern is also improved. It is proved that the bifocal design method effectively improves the scanning performance of the planar lens.