A new type of UWB(ultra-wideband,UWB)antenna with triple-trap is designed,the size of which is 31 mm×18 mm×0.8 mm.The antenna adopts the method of cutting the Angle on both sides of the lower part of the radiation patch and grooving in the middle of the ground floor.The working frequency band of the antenna is expanded successfully,and the band-width of 3.1～10.6 GHz is achieved.Three frequency bands of 3.15～4.0 GHz,5.1～5.85 GHz and 6.7～8.2 GHz are suppressed by partially etching the inverted"L"slot on the radiation patch,partially opening the inverted"U"slot under the radiation patch and partially employing the H-shaped slot on the microstrip feeder.The notch performance of WiMAX,WLAN and X band commu-nication downlink frequency is achieved,and the standing wave ratio of the three notch bands is greater than 2.The superior tri-ple band-notched antenna is excellent in comprehensive performance in the field of wireless communication system and promis-es to be applied more extensively.
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