基于田口算法的超宽带TEM喇叭天线及阵列的优化

摘要

As a global optimization algorithm, Taguchi' s Method has many advantages, such as simple implementation , fast convergence speed. An ultra-wide band TEM horn antenna is optimized through the method combining Taguchi' s method with finite-difference time-domain (FDTD) method. Compared with integer coded differential evolution strategy, Taguchi' s method can converge to the optimal result, and the convergence speed has been rised almost three times. Besides, a 6-element horn antenna array is optimized. Its performances are greatly improved.%田口算法作为一种全局优化算法,具有实现过程简单、收敛速度快等优点.采用田口算法与时域有限差分( FDTD)法结合的方法对超宽带TEM喇叭天线进行了优化,并把优化性能、收敛速度等与整数编码微分进化相应结果进行对比.结果表明田口算法能够寻到最优解,而且其收敛速度是整数编码微分进化收敛速度的近三倍.另外还对六元喇叭天线阵进行了优化,优化后六元阵的性能得到了很大的提高.