In order to effectively suppress the interference of the C-band of the Indian National Satellite Communication and X-satellite frequency bands to the ultra-wideband communication system, a new type of dual notch bands UWB filter is proposed. The filter adopts the intersection with a stepped T-type multimode resonator (MMR) and a defective ground structure (DGS) to achieve ultra-wideband characteristics. Using asymmetric coupling lines and coupling split ring resonators on both sides of the MMR, notchs are generated in the two frequency bands of 6. 67 ~ 7. 06 GHz and 7. 47 ~ 7. 57 GHz respectively. The measured results are in good agreement with the simulation results. The passband range of the filter is 3. 03~ 11. 50 GHz, the 3 dB bandwidth reaches 123%, the insertion loss is only 0. 87 dB, and the center frequencies of the two notches are at 6. 87 GHz and 7. 52 GHz, respectively. The depth of notch bands is greater than 20 dB, and the overall size is compact, only 16 mm×8 mm.