一种新的波导带通滤波器的优化设计方法  

A New Optimized Design Method for Waveguide Band-Pass Filter

作　　者：翟阳文[1] 史小卫[1] 魏峰[1] ZHAI Yang-wen SHI Xiao-wei WEI Feng(Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi＇ an 710071, China)

机构地区：[1]西安电子科技大学天线与微波技术重点实验室,西安710071

出　　处：《微波学报》2016年第5期71-75,共5页Journal of Microwaves

基　　金：国家自然科学基金(61301071)

摘　　要：基于全波分析法、改进的阻抗倒置器模型和自适应微种群遗传算法,提出了一种设计波导带通滤波器的快速精确方法。该方法通过结合改进的阻抗倒置器模型和全波分析法,能够在设计带通滤波器,特别是带宽较宽的情况下获得较为精确的初值。在此基础上,通过采用自适应的微种群遗传算法对初值进行优化。该方法能在保证数值精确性的基础上,以较小的群体规模和较少的遗传代数获得比其他优化方法更好的回波损耗以及通带微调功能;在多优化变量的波导带通滤波器问题上,提出的混合方法优于传统的优化设计方法或其他遗传算法。An optimized design method of waveguide band-pass filterer is presented in this paper. The proposed method is based on full-wave analysis,improved impedance inverter and adaptive micro genetic algorithm. Combined with the improved impedance inverter and full-wave analysis method,preferable initial values are obtained,especially in the broad band case. An adaptive micro-genetic algorithm is supplied for the optimization. The numerical results indicate that with a smaller population size and fewer genetic generations,a better return-loss and pass-band micro-adjustment can be attained than the other methods. The hybrid method in this paper is better than the others for the waveguide band-pass filter especially when the amount of variable is comparatively large.

关 键 词：微种群遗传算法 改进的阻抗倒置器 全波分析 带通滤波器 

分 类 号：TN713.5[电子电信—电路与系统]