基于改进遗传算法的双波带阻抗变换器设计  

Design on Dual-band Impedance Transformer Based on a Variant of Canonical Genetic Algorithm

作　　者：史玮[1] 蔡钧[1] 

机构地区：[1]扬州大学信息工程学院,江苏扬州225127

出　　处：《无线电工程》2014年第7期76-78,共3页Radio Engineering

摘　　要：阻抗匹配技术在微波工程中十分重要。提出了一种基于改进遗传算法的双频带阻抗匹配的设计方法,该阻抗变换器能在2个频率点对任意电阻性负载实现理想的阻抗匹配。通过对多节传输线匹配方程的严格解,得到了双频阻抗变换器的精确设计公式,对用该方法设计的阻抗变换器性能进行了仿真分析,结果显示了该方法的有效性,可用于实际的设计。The impedance matching technique is very important in microwave engineering. This paper proposes a dual-band impedance matching design method based on a variant of canonical Genetic Algorithm. The impedance transformer can realize ideal im-pedance matching in two frequency points in any resistive load. Based on the exact solution of multi-section transmission line matching equation, the precise design formula of dual band impedance transformer is obtained. The simulation analysis on impedance transforma-tion performances designed by the method is implemented, and the results show that the proposed method is effective and can be used in practical design.

关 键 词：双波段 阻抗变换 传输线 

分 类 号：TN624.1[电子电信—电路与系统]