【作者】 陶荣； 龚书喜； 张帅；

【Author】 TAO Rong;GONG Shuxi;ZHANG Shuai;Key Laboratory of Antennas and Microwave Technology,XiDian Univ.;

【机构】 西安电子科技大学天线与微波技术重点实验室；

【摘要】 为了避免诸如Wi MAX和WLAN等窄带通信系统对超宽带通信系统的干扰,提出了一种紧凑的组合陷波结构的超宽带缝隙天线。该天线采用多边形缝隙作为辐射单元,由背面的渐变T形微带线馈电,通过在宽缝中加入一对寄生单元和地板上开的四臂螺旋槽的组合陷波结构来实现双频陷波特性。仿真结果表明,该天线VSWR<2的带宽覆盖2.67～12.3GHz,在3.3～3.8 GHz和5.150～5.825 GHz的频段内实现了良好的滤波特性,同时该天线在整个工作频段范围内具有良好的全向性和稳定的增益。更多还原

【Abstract】 A compact ultra-wideband slot antenna with assembled dual band notched structure is presented to avoid the interference of service that work in the UWB band such as WiMAX and WLAN applications. A polygon slot is taken as the radiating element and is fed by gradient T-shaped stub. The dual band-notched characteristics are achieved by adding a pair of stub on the wide slot and etching a couple of four arms spiral slots on the ground plane. Simulated results show that the voltage standing wave ratio(VSWR) in the working band of 2.67 to 12.3 GHz is less than 2 except the bandwidth of 3.3～3.8 GHz and 5.15～5.825 GHz for two band notch.Omnidirectional radiation pattern and stable gain are obtained in the whole bandwidth range.更多还原