Filter and antenna are the most important components in transmission and receiving signal in wireless communication system. The combination of a filter and antenna is call as filtenna. In this paper, a metamaterial band-stop filter is combine with a multiband antenna to produce a dual-band metamaterial filtenna. The purpose of combining both in one structure is to have a compact size and to reduce the transmission line losses. In addition, by implementing the metamaterial structure in the filter design, it can help to increase the overall filtenna performances. All the designs is simulated using CST Microwave Studio software. The performances of the dual-band metamaterial filtenna are analysed based on its S-parameter response and radiation patterns. The simulation results shows that the filtenna has operates at 2.6 GHz and 5.2 GHz, which is mostly suitable for WiMAX application.