Antenna and electronic device

An antenna, used in an electronic device, wherein the electronic device comprises a metal back housing, a metal middle frame, and a screen substrate, wherein the screen substrate is a metal plate, the metal back housing is connected to the metal middle frame, the screen substrate has a first spacing with the metal middle frame, the screen substrate has a second spacing with the metal back housing, the first spacing between the screen substrate and the metal middle frame forms a first window, and a second window is provided on the metal back housing;

• the metal back housing comprises a first side and a second side opposite to each other, and a third side and a fourth side opposite to each other, the first side is adjacent to the third side, a region between the first side and the second window is a first region, and a region between the third side and the second window is a second region;
• a distance between the second window and the first side is less than a distance between the second window and the second side, and/or a distance between the second window and the third side is less than a distance between the second window and the fourth side;
• a first ground terminal, a feed terminal, and a second ground terminal are disposed on the screen substrate, the feed terminal is located between the first ground terminal and the second ground terminal, and projections of the first ground terminal, the feed terminal, and the second ground terminal on the metal back housing are located in the first region and/or the second region;
• and
• the first ground terminal, the feed terminal, and the second ground terminal are connected to the metal back housing by using metal connectors respectively.