An antenna assembly employed by a wireless communication device having a housing includes a base board, a grounding member secured on the base board and grounding the antenna assembly, a first radio member electrically connected to the based board to receive and transmit wireless signals having a first central frequency, and a second radio member forming a portion of the housing and electrically connected to the grounding member. The second radio member couples with the first radio member to receive and transmit wireless signals having a second central frequency.