Accurate Synthesis Formulas Obtained by Using a Differential Evolution Algorithm for Conductor-Backed Coplanar Waveguides

Abstract

Abstract-In this paper, accurate synthesis formulas obtained by using a differential evolution (DE) algorithm for conductor-backed coplanar waveguides (CBCPWs) are presented. The synthesis formulas are useful to microwave engineers for accurately calculating the physical dimensions of CBCPWs. The results of the synthesis formulas are compared with the theoretical and experimental results available in the literature. A full-wave electromagnetic simulator IE3D and experimental results are obtained in this work. The average percentage error of the synthesis formulas obtained by using DE algorithm is computed as 0.67% for 1086 CBCPW samples having different electrical parameters and physical dimensions, as compared with the results of quasi-static analysis.

Numerical synthesis of coplanar waveguides

“…These long formulae were obtained by curve fitting and are valid for range of values of dimensions. Neural networks 4 and differential evolution algorithms etc 5 . have also been employed.…”

“…Neural networks 4 and differential evolution algorithms etc. 5 have also been employed. A paper using ANFIS mode 6 has also been reported.…”