And an antenna array antenna unit

The present invention relates to the communication field and discloses an antenna unit and antenna array, the antenna unit comprising: a baseplate and k patches above the baseplate and parallel to thebaseplate, wherein the i+1th patch is above the ith patch, k > 1 and I < k; each patch comprises a first feed point, the first feed point being connected to a first feed port, and the first feed portis used to output a first signal; or, each patch comprises the first feed point and a second feed point, the first feed point being connected to the first feed port, and the second feed point is connected to the second feed port, and the first feed port outputs a first signal, and the second feed point outputs a second signal, and the first signal and the second signal are at the same frequency and are perpendicular to each other in a polarization direction. The present invention addresses a problem in which adding a filter after the feed port to separate circuits of two signals is complex, simplifying a structure of the antenna unit.