一种简洁的三陷波超宽带天线设计

A Simple Design of Triple-Band-Notched Ultra-wide Band Antenna

设计工作带宽为2.5~11.0 GHz的小型化超宽带陷波天线,可实现全向辐射。通过在贴片上开直线槽和在馈线上加入并联耦合枝节,实现天线的三陷波特性。仿真测试结果表明,频带内驻波<2,有效阻隔了WiMax(3.3~3.6 GHz)、大容量微波通信频段(4.5~5.0 GHz)、无线局域网(WLAN)(7.25~7.75 GHz),并在6.0 GHz上实现增益2.1 dBi。天线总体具有良好的辐射和匹配特性,适用于构建各种超宽带系统。

In this paper,a miniaturized UWB notch antenna with bandwidth of 2.5~11.0 GHz is designed,which can realize omni-directional radiation.By cutting straight grooves on the patch and adding parallel coupling branches to the feeder,the three-trap baud property of the antenna is realized.The simulation test results show that the standing wave in the band is less than 2,which effectively blocks WiMax(3.3~3.6 GHz),high-capacity microwave communication band(4.5~5.0 GHz),wireless local area network(WLAN)(7.25~7.75 GHz),and achieves a gain of 2.1 dBi at 6.0 GHz.The antenna has good radiation and matching characteristics,which is suitable for various UWB systems.