Antenna, antenna array, and electronic device

An antenna comprising a radiating patch layer, a ring-shaped metal layer, and a feed structure located between the radiating patch layer and the ring-shaped metal layer;

• the radiating patch layer comprises sixteen radiating patches distributed in a 4×4 array, wherein there is a slot between two adjacent radiating patches of the sixteen radiating patches in a row direction and a column direction of the array;
• the ring-shaped metal layer is disposed in correspondence with a peripheral edge part of the radiating patch layer, a plurality of metal columns are disposed on a side of the ring-shaped metal layer that faces the radiating patch layer, and each of the plurality of metal columns is electrically connected to the radiating patch layer;
• the feed structure comprises a first feed port and a second feed port, and the first feed port and the second feed port are electrically connected to the radiating patch layer;
• based on the first feed port performing feeding, an electrical signal on the radiating patch layer is a first electrical signal, and based on the second feed port performing feeding, an electrical signal on the radiating patch layer is a second electrical signal;
• and
• amplitudes of the first electrical signal and the second electrical signal are equal, and a phase difference between the first electrical signal and the second electrical signal is 180°±45°.

An electronic device comprising an antenna, wherein the antenna comprises a first antenna structure having a radiating patch layer, a ring-shaped metal layer, a first metal layer, and a feed element, and wherein the ring-shaped metal layer is located between the radiating patch layer and the first metal layer;

• the radiating patch layer comprises four radiating patches distributed in a 2×2 array, wherein there is a slot between two adjacent radiating patches of the four radiating patches in a row direction and a column direction of the array;
• the ring-shaped metal layer is disposed in correspondence with a peripheral edge part of the radiating patch layer, wherein the ring-shaped metal layer is coupled to the radiating patch layer;
• a plurality of metal columns are disposed on a side of the first metal layer that faces the ring-shaped metal layer, and each of the plurality of metal columns is electrically connected to the ring-shaped metal layer;
• and
• the feed element is electrically connected to the radiating patch layer and, based on the feed element performing feeding, there is a first phase difference between electrical signals on two adjacent radiating patches of the four radiating patches in a clockwise arrangement direction of the four radiating patches.