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提出了一款紧凑型多陷波特性超宽带天线,该天线由圆形贴片和改进的接地板组成.采用在辐射贴片上开两个圆弧状U形槽和接地板上开一个U形窄缝隙的结构使其具有多陷波特性.天线的体积仅为32 mm×25mm×1.6 mm,结构紧凑.仿真与测试结果表明:该天线工作带宽为2.8～16 GHz,实现了3.2～3.8 GHz、4.5 ～5.5GHz和7.2 ～8.6 GHz 3个频段的陷波特性,有效阻隔了WiMAX (3.3～ 3.6 GHz)、大容量微波通信频段(4.5～5 GHz)、部分WLAN(5.1 ～5.35 GHz)、X波段(7.25～7.75 GHz)和国际电信联盟(ITU)波段(8.01 ～8.5 GHz)窄带信号的干扰.除陷波频段外该天线具有良好性能和辐射方向性,更适合应用于超宽带系统.“,”A compact UWB antenna with multi-band-notched property is presented.The antenna is composed of a circular patch and improved ground.The multi-band-notched characteristics are achieved by embedding two arc U-shaped slots on the radiating patch and etching a narrow U-shaped slot on the ground plane.The proposed antenna has a compact volume of 32 mm×25 mm×1.6 mm.Simulated and measured results show that the antenna has bandwidth of 2.8 ～ 16 GHz,it realizes band-notched characteristics of triple stop-bands at 3.2 ～ 3.8 GHz,4.5 ～ 5.5 GHz and 7.2 ～ 8.6 GHz,and efficiently rejects the jamming from WiMAX (3.3 ～ 3.6 GHz),large capacity microwave communication (4.5 ～ 5 GHz),partial WLAN (5.1 ～5.35 GHz),X band (7.25 ～7.75 GHz) and ITU (8.01 ～8.5 GHz) band signals.The antenna exhibits good performance and radiation characteristics except at reject-bands,making it more suitable for UWB application.