In the antenna solution provided in this application, an exciting element is disposed above a ground plane of an electronic device (for example, a mobile phone), to feed power to the exciting element, so as to effectively excite the ground plane to generate radiation. In this way, because a radiation capability of the ground plane is not affected by a size of a clearance between a display screen and the ground plane, the antenna solution provided in this application is applicable to a bezel-less electronic device whose antenna space is sharply reduced. In addition, the ground plane serves as one of the main radiation apertures of an electronic device (for example, a mobile phone), and exciting the ground plane to generate radiation can significantly improve antenna performance.