An antenna includes a first radiating conductor and a second radiating conductor. The first radiating conductor defines a first edge, a second edge and a lateral edge connecting the first edge and the second edge. The second radiating conductor has a main body spaced away from the second edge and connected to an end of the first radiating conductor far away from the lateral edge by a first connecting portion and extending towards the lateral edge. A free end of the main body bends to the second edge to form a second connecting portion spaced away from the lateral edge. A radiating end bends oppositely to the first radiating conductor from an end of the second connecting portion and is adjacent to the second edge. A feeding conductor and a grounding conductor are connected to an edge of the first radiating conductor different from the first edge and the lateral edge.