基于遗传算法的宽带匹配电路优化设计  

Optimized Design of Broadband Matching Circuit based on Genetic Algorithm

作　　者：王鹏[1] WANG Peng(China Airborne Missile Academy,Luoyang Henan 471000)

机构地区：[1]中国空空导弹研究院

出　　处：《河南科技》2018年第7期143-145,共3页Henan Science and Technology

摘　　要：在不同特性阻抗传输线连接,或微波传输线的负载不匹配时,连接处会产生反射,为了消除反射,使阻抗匹配,可以加入阻抗变换器.单节阻抗匹配器结构简单,但工作带宽窄;多节变换器可以拓宽工作带宽.一般来说,节数越多,带宽越宽,随之而来的就是变换器越长.本文提出了一种基于遗传算法的优化设计方法,并与二项式响应设计仿真对比,在多节数、大宽带、大失配负载下反射系数有更好的表现.Reflection appears when transmission lines connect with different character impedance or load mismatch happens. Impedance transformer can be used for eliminating reflection. The structure of single sec.tion impedance matching circuit is simple, but result in narrow band behavior. Multi-section transformer can improve the bandwidth. In general, wider bandwidth increases with the number of sections, hence the length of transformer would be longer. This paper described an optimized design based on genetic algo.rithm. Comparing with binominal transformer, the reflection of the circuit designed by GA has a better per.formance on cascaded multi-section, wider bandwidth and higher rate of load mismatch.

关 键 词：遗传算法 宽带 阻抗匹配 多节 阻抗变换器 

分 类 号：TP183[自动化与计算机技术—控制理论与控制工程]