Synthesis formulas for microcoplanar striplines

Micro & Optical Tech Letters

Güney

Yildiz

et al. 2010

New and accurate synthesis formulas for the asymmetric conductor‐backed coplanar waveguide (ACBCPW) are presented. They are obtained by using a differential evolution and particle swarm optimization algorithms. The synthesis formulas are useful to microwave engineers for accurately calculating the physical dimensions of ACBCPWs. The results of the synthesis formulas are compared with the quasi‐static analysis, a full‐wave electromagnetic simulator IE3D, and experimental results obtained in this work. The average percentage errors of the synthesis formulas found by using differential evolution and particle swarm optimization algorithms are calculated to be 0.56% and 0.93%, respectively, for 3024 ACBCPW samples having different electrical parameters and physical dimensions, compared with the results of respective quasi‐static analysis. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:211–216, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25666

Section: Introductionmentioning

confidence: 80%

New and accurate synthesis formulas for asymmetric conductor‐backed coplanar waveguides

Micro & Optical Tech Letters

Güney

Yildiz

et al. 2010

“…Rectangular boundary division method (RBDM) [10], finite difference time domain method [11], and conformal mapping method (CMM) [12, 13] have been used for analyzing of MCPSs. The synthesis formulas for MCPSs were also proposed in the literature [10, 14, 16]. The synthesis formulas proposed in Refs.…”

Section: Introductionmentioning

confidence: 99%

ANFIS models for synthesis of micro‐coplanar stripline and asymmetric coplanar stripline with an infinitely wide strip

Micro & Optical Tech Letters

Güney

Yildiz

et al. 2011

In this letter, computer-aided design models based on adaptive-network-based fuzzy inference system (ANFIS) for the synthesis of two coplanar stripline structures are presented. These coplanar stripline structures are micro-coplanar stripline and asymmetric coplanar stripline with an infinitely wide strip. Four optimization algorithms, hybrid learning (HL), simulated annealing, least-squares, and genetic, are used to determine optimally the design parameters of the ANFIS models. The results of ANFIS models are compared with the results of quasi-static analysis, synthesis formulas available in the literature, a full-wave electromagnetic simulator IE3D, and experimental works realized in this study. The results of ANFIS models agree with the results of other methods and experimental works. When the performances of ANFIS models are compared with each other, the best results for training and test are obtained from the models trained with HL algorithm.

“…DE algorithm, one of the evolutionary algorithms, has been proven to be a highly efficient technique for solving numerical optimization problems. It is recognized that DE algorithm is practical and powerful optimization tools for a variety of microwave engineering problems [15][16][17][18][19][20][21][22][23]. The synthesis formulas proposed here are used to successfully compute the physical dimensions of CBCPWs.…”

Section: Introductionmentioning

confidence: 99%

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

Güney²,

Yildiz³

et al. 2009

PIER M

Self Cite

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.