论文信息 - DESIGN OF A MULTISECTION IMPENDANCE-TRANSFORMING BRANCH-LINE HYBRID USING A GENETIC ALGORITHM

DESIGN OF A MULTISECTION IMPENDANCE-TRANSFORMING BRANCH-LINE HYBRID USING A GENETIC ALGORITHM

A design method for a multisection impedance-transforming branch-line hybrid using a genetic algorithm is proposed. In contrast to the previous design methods, an asymmetric structure is introduced to optimize the hybrid. Optimization is performed within the impedance range to achieve the realizable hybrids with a microstrip line in a desired frequency range. The hybrid designed by the proposed method has 3–10% more bandwidth than the previous results. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 22: 436–439, 1999

Sangseol Lee | Kyungwoo Lee | Kun‐Sup Kwon

[1] Hao Wang,et al. Introduction to Genetic Algorithms in Electromagnetics , 1995 .

[2] Eric Michielssen,et al. Genetic algorithm optimization applied to electromagnetics: a review , 1997 .

[3] R. Levy,et al. Synthesis of Symmetrical Branch-Guide Directional Couplers , 1968 .

[4] P. L. Werner,et al. Extraction of equivalent circuits for microstrip components and discontinuities using the genetic algorithm , 1998 .

[5] Masahiro Muraguchi,et al. Optimum Design of 3-Db Branch-Line Couplers Using Microstrip Lines , 1983 .

[6] S. Kumar,et al. A multisection broadband impedance transforming branch-line hybrid , 1995 .

[7] R. Levy. Zolotarev Branch-Guide Couplers , 1973 .

[8] S. A. Tretyakov. Physical interpretation of the transparent absorbing boundary for the truncation of the computational domain , 1998 .