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提出并研究了一种平面印刷单极天线,采用共面波导馈电,天线辐射体采用椭圆和带有对称枝节环的组合结构。着重研究如何通过调整内、外圆环枝节的长度,改变天线的谐振特性,从而实现天线在3.1～10.6GHz频率范围内回波损耗S11<-10dB,满足超宽带通信的要求。制作了实验模型,用矢量网络分析仪进行测试,与仿真结果比较取得较好一致性。
A flat printed monopole antenna is proposed and studied. The coplanar waveguide feedthrough is adopted. The antenna radiator adopts an ellipse and a combination structure with symmetrical branch and ring joints. Focus on how to adjust the length of the inner and outer ring branches to change the resonant characteristics of the antenna in order to achieve the antenna in the 3.1 ~ 10.6GHz frequency range of the return loss S11 <-10dB, to meet the requirements of ultra-wideband communications. The experimental model was made and tested with a vector network analyzer. The results were in good agreement with the simulation results.