多用途超宽带印刷单极子天线

Printed monopole ultra-wideband antenna for multiple application

提出了一种共面波导馈电的印刷单极子超宽带(UWB)天线.该天线通过在印刷三角形单极子天线上加载圆形结构,同时采用圆弧形渐变结构地板来获得天线的宽频带特性.实验结果表明:该天线在1.7～13 GHz的范围内其VSWR<2;工作频率范围内具有良好的全向辐射特性;传输函数幅度平坦、相位近似呈线性关系、传输时延较为平坦,有利于UWB信号的传输.这种天线可用于UWB、无线局域网、1800GSM和IMT2000等多种无线通信系统中.

A printed monopole ultra-band antenna with coplanar waveguide feed was presented. The ultrawide band characteristics were realized by changing the top side of a triangle monopole into an arc and varying the grounds into gradual arcs. The measured results show that the operation bandwidth of VSWR〈2 is 1.7-13 GHz and the spherical radiation properties over the entire frequency range is good. The transmission function has fiat amplitude and linear phase with smooth time delay being gained, which is advantageous to the transmission of the UWB signals. This type of antenna can be used in several multiband communication systems, such as UWB, wireless local area network, 1800GSM and IMT2000, etc.