一种叠加椭圆环形三频单极子缝隙天线的设计

Design of a Superimposed Elliptic Ring Tri-frequency Monopole Slot Antenna

设计一种叠加椭圆环形三频单极子缝隙天线,并分析改变椭圆环尺寸对天线性能的影响.天线由叠加椭圆环形馈源终端、共面波导馈线、矩形宽缝隙地板构成,采用共面波导馈电.结果表明,设计的天线具有三频特性,有效工作带宽为3.2～3.8GHz,5.1～6GHz,7.8～12GHz,尺寸为25 mm×25 mm,各频段的辐射特性和增益特性良好,适用于集成WiMAX,WLAN和X频段的小型多频带无线通信系统.

The author designed a superimposed elliptic ring tri-frequency monopole slot antenna and analyzed the effects of the size change of elliptic ring on the antenna performance.The antenna consisted of a superimposed elliptic loop feed terminal,coplanar waveguide feeder and rectangular wide spot floor,and coplanar waveguide was used to feed the antenna.The results show that the designed antenna has tri-frequency characteristics,effective working bandwidths are 3.2-3.8 GHz,5.1-6 GHz and 7.8-12 GHz,the size is 25 mm×25 mm,the radiation characteristics and gain characteristic are good,so it is suitable for small multi-band wireless communication system of integrated WiMAX,WLAN and X bands.