This application provides example power dividers. One example power divider includes a metal ground plane and a metal strip line. The metal strip line is disposed on a side of the metal ground plane in a direction perpendicular to the metal ground plane. The metal strip line includes a power division node, an input port, a first output port, and a second output port. The metal strip line between the power division node and the first output port is a first output line, the metal strip line between the power division node and the second output port is a second output line, and the two output lines respectively include a first node and a second node. Impedances of the metal strip line on two sides of the first node are different, and impedances of the metal strip line on two sides of the second node are different.