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(一)引言 阵列天线一般是由称为单元的许多小天线组成的,由于是露天工作,它必须防雨、防尘和防潮……。而天线罩的加入,阵列性能下降不应太大。此外,以扫描为特征的相控阵,其性能是与扫描角紧密相关的,其变化规律在两个主平面是相反的,如图1所示。为了在要求的空域内达到更好的阻抗匹配特性、达到宽角扫描和能量充分利用的目的,应当选择这样一种材料做天线罩:即当波投射于该材料时,它对波产生的电
(A) Introduction Antenna arrays are typically made up of many small antennas called cells that must be protected from rain, dust, moisture and moisture because of open-air work. The addition of the radome, the array performance decline should not be too large. In addition, the characteristics of the scanning phased array, its performance is closely related to the scanning angle, and its variation in the two main planes are the opposite, as shown in Figure 1. In order to achieve better impedance matching characteristics in the required airspace and to achieve wide-angle scanning and full energy utilization, a material should be chosen as the radome: when a wave is projected on the material,