车载宽叶单极对数周期天线的矩量法分析

Analysis on Vehicle-borne Log-periodic Monopole Antenna Using the Method of Moment

将单极对数周期天线改进成宽叶形式,使之具备更好的电气性能和机械性能,从而适合于车载使用。利用矩量法分析了这种车载宽叶单极对数周期天线,其面结构选用RWG矢量基函数,细线结构选用三角基函数,将导电载体和天线作为一个系统进行分析,运用传输线网络理论解决了天线振子馈电问题。最后进行实例计算,计算结果与实际测量结果吻合良好,验证了该方法的有效性。

The vehicle- borne log- periodic monopole antenna is improved to gain better electrical and mechanical properties. Then the new Vehicle - borne log- periodic monopole antenna is analyzed by the Method of Moment （MoM）. The basis function presented by RWG is used to present the current on the surfaces. The triangular basis function is used to present the current on the wires. The feeder line is analyzed by the theory of transmission line. Numerical results and comparisons Show the efficiency of the method.