方环对数周期天线的设计与特性分析

Analysis of the Square Loop Log-Periodic Antenna

以方环为基本单元,按照对数周期偶极子的排列形式组成方环对数周期天线,并用仿真软件CST进行了设计、分析和优化。结果表明,方环对数周期天线具有理想的增益及带宽,同时其结构尺寸比常用的对数周期偶极子天线减小了一倍多,达到了天线小型化的目的。

In this article a square loop is adopted as the elements of the square loop log-periodic antenna which are arrayed according to the LPDA,the square loop log-periodic antenna is designed, analyzed and optimized by CST. The result shows that both the gain and bandwidth have good properties. This design apparently leads to a size-reduction of more than 50% compared to the traditional LPDA, and realizes miniaturization of antenna.