A novel CPW-fed circular disc ultra-wideband antenna with dual band-notched characteristics, which can meet the demand of communication of the day is designed in this paper. With the antenna fed by CPW, good ultra-wideband impedance match can be achieved. Meanwhile, to obtain the notched bands at the frequency range of WLAN and WiMAX, two C-shaped slots are embedded into the radiating patch, then, electromagnetic compatibility is achieved. Through comparison, the theoretical、simulated and measured results are coincident, which shows that the antenna has a good radiating characteristic with the return loss under -10 dB and the radiation patterns matching within the transmission band. The gains of the antenna within the notched bands have been reduced separately by 3.2 dB and 7.5 dB, thus effectively reducing the radiation.