【摘要】 应用渐近波形估计技术与矩量法相结合,分析了一种对数周期天线的电气特性。采用这种方法可以在很宽的频带中只取少量频点利用矩量法计算,再在整个频带进行Pade逼近就可获得天线的频率特性。从而节省了分析电磁问题时的计算时间和内存要求。采用这个方法与矩量法算出的结果进行了比较,它们之间良好的一致说明了本方法的正确性和有效性。更多还原

【Abstract】 A numerical method of analyzing log periodic antenna(LPDA) is presented in this paper. It uses the method of moments(MoM) in conjunction with the asymptotic waveform evaluation technique. The antenna is calculated only at a few frequency points, then matched via the pade approximation to obtain the frequency characteristic. It therefore reduces both the computation time and storage requirement. Some wire antennas are analyzed by means of this method and the calculated results are compared with those obtained by a conventional method of moments.更多还原