Antenna array, antenna system and radar

The invention discloses an antenna array, an antenna system and a millimeter wave radar, wherein the antenna array comprises a plurality of antenna units, each antenna unit comprises a plurality of radiation units, and the current distribution of each antenna unit obeys a first rule; the current distribution of each radiation unit obeys a second rule, and the first rule and the second rule are symmetrically distributed. According to the present invention, the technical problem of poor anti-interference effect of the antenna in the prior art is solved. 本申请公开了一种天线阵列、天线系统以及毫米波雷达，其中，天线阵列包括：多个天线单元，各个所述天线单元中包括多个辐射单元，其中，各个所述天线单元的电流的分布服从第一规律，各个所述辐射单元的电流的分布服从第二规律，所述第一规律和第二规律分别为对称分布。本申请解决了现有技术中的天线的抗干扰效果不佳的技术问题。