An antenna module is adapted for receiving a radio frequency current signal, and includes a radiator unit, a connecting unit, and a ground unit. The radiator unit includes a radiator body, and a feed-in part for receiving the radio frequency current signal. The connecting unit extends from and extends substantially perpendicular to the radiator body, and has one end that is opposite to the radiator body. The ground unit includes first and second grounds parts. The first ground part extends from the one end of the connecting unit, extends parallel to the connecting unit, and has one end that is opposite to the connecting unit. The second ground part extends from the one end of the first ground part, and extends substantially perpendicular to the first ground part in a manner that the radiator body, the connecting unit, and the ground unit cooperate to form a receiving space.