Circularly polarized antenna, array antenna, and communication device

A circularly polarized antenna, comprising a radiating patch, a ground layer, a dielectric layer and a power divider module;

• wherein the radiating patch and the ground layer are arranged opposite to each other, and the dielectric layer is located between the radiating patch and the ground layer;
• the power divider module comprises an input terminal and two output terminals, a phase difference between output signals of the two output terminals is 90°;
• the radiating patch comprises a first feed point and a second feed point, the first feed point is electrically connected to one of the two output terminals, and the second feed point is electrically connected to the other one of the two output terminals;
• and
• a virtual connection line of the first feed point and a center of the radiating patch is regarded as a first line, a virtual connection line of the second feed point and the center of the radiating patch is regarded as a second line, and an angle between the first line and the second line is less than 90°.