Title :
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
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;
Conference_Titel :
Electromagnetics (iWEM), 2014 IEEE International Workshop on
Conference_Location :
Sapporo
DOI :
10.1109/iWEM.2014.6963644
