An optimized design method of composite right/left handed transmission lines considering higher-order mode interaction by genetic algorithm

Author

Mukainoge, Yoshie ; Deguchi, Hiroyuki ; Tsuji, Mineo

Author_Institution

Dept. of Electron., Doshisha Univ., Doshisha, Japan

fYear

2014

fDate

4-6 Aug. 2014

Firstpage

78

Lastpage

79

Abstract

This paper proposes composed right/left handed transmission lines (CRLH-TL) consisting of arbitrarily-shaped conductor elements, which are designed by a genetic algorithm (GA). However, when the right/left handed transmission lines are constructed by these elements, the higher-order mode coupling between the adjacent elements often causes the unexpected transmission characteristics error and then the performance is deteriorated. So, we choose not only the phase constants in the case of infinite periodic cells but also transmission characteristics in periodic 3 cells as a fitness function. A design example is demonstrated, and its effectiveness is proved from comparison of transmission characteristics between the calculated and the measured results.

Keywords

genetic algorithms; transmission line theory; CRLH-TL; GA; adjacent elements; arbitrarily-shaped conductor elements; composite right-left handed transmission lines; fitness function; genetic algorithm; higher-order mode coupling; higher-order mode interaction; infinite periodic cells; optimized design method; periodic 3 cells; unexpected transmission characteristic error; Conductors; Couplings; Design methodology; Genetic algorithms; Optimization; Power transmission lines; Transmission line measurements; Genetic algorithm; fitness function; left-handed; periodic 3 cells;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics (iWEM), 2014 IEEE International Workshop on

Conference_Location

Sapporo

Type

conf

DOI

10.1109/iWEM.2014.6963644

Filename

6963644