摘要
介绍了共面波导天线的性能、设计原理,分析了各个参数对天线性能的影响,通过优化半椭圆辐射贴片的长短轴半径,设计了一种结构简单的共面波导馈电的小型超宽带天线,覆盖频段为2.9~10.8 GHz。在此天线的基础上,采用在天线辐射贴片底端依次刻蚀三组矩形凹口的措施,使得天线的带宽得到进一步的展宽,覆盖了3~31 GHz频段,阻抗带宽超过10∶1。加工了实物并进行了测试,测试结果与仿真结果吻合较好,表明这种展宽带宽方法的有效性。该天线结构简单,尺寸小,便于集成在多种移动通信系统中。
The performance and design principles of the coplanar waveguide（CPW） antenna are introduced, and the influence of parameters on antenna properties is analysed. By optimizing the length of the long and short ra- dius of the semi-elliptical radiation patch, a small simple-structured CPW- fed UWB（Ultra- wideband） anten- na is developed, which covers 2.9- 10.8 GHz. Based on this antenna, by deploying the measure of etching three pairs of rectangular notches successively at the bottom of the antenna radiation patch, the bandwidth of the antenna is broadened, ranging from 3 - 31 GHz. The impedance bandwidth has exceeded 10： 1. An antenna is manufactured and tested. The results show a good agreement with the simulation results, which indicates the va- lidity of the method to broaden bandwidth. This antenna is simple in structure and small in size, and can be conveniently integrated in various mobile communication systems.
出处
《电讯技术》
北大核心
2011年第8期125-129,共5页
Telecommunication Engineering
