Synthesis formulas for conductor‐backed coplanar waveguide

Yildiz, Celal; Türkmen, Mustafa

doi:10.1002/mop.23304

Cited by 3 publications

(15 citation statements)

References 14 publications

(19 reference statements)

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“…2 and 3, respectively, illustrate the quasi-static analysis [5] ) results obtained by using the first synthesis formula proposed in this paper, the synthesis formula proposed in [12] and the quasi-static analysis [5] contours for CBCPWs (ε r = 12. ) results obtained by using the second synthesis formula proposed in this paper, the synthesis formula proposed in [12] and the quasi-static analysis [5] contours for CBCPWs (ε r = 12. is clear from Figs. 2 and 3 that there is a very good agreement between the results of quasi-static analysis [5] and the synthesis formulas proposed in this paper.…”

Section: Numerical Results and Discussionmentioning

confidence: 94%

“…2 and 3. The results of synthesis formulas proposed by Yildiz and Turkmen [12] are also given in these figures for comparison. Figs.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…The synthesis formulas proposed here are used to successfully compute the physical dimensions of CBCPWs. The validity and accuracy of the proposed synthesis formulas are verified by comparing their results with those of experimental works [3], CMM [5], synthesis formulas [12], a full-wave electromagnetic simulator IE3D [24], and experimental works realized in this study. It was shown that the synthesis formulas proposed in this paper provide more accurate results than the synthesis formulas proposed in [12].…”

Section: Introductionmentioning

confidence: 81%

“…Among these advantages, CBCPWs allow easy implementation of mixed coplanar/microstrip circuits, reduce radiation effects, and raise effective permittivity. These and several other advantages make CBCPWs ideally suit for MIC as well as monolithic MIC (MMIC) applications [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…The dispersion characteristics of CBCPWs have been obtained by using the rigorous mode matching method [8], alternative formulation of the transverse resonance technique [9], full-wave SDA and Galerkin's method [10], and a hybrid two-dimensional finite-difference time-domain/Marquardt curve-fitting technique [11]. The synthesis formulas were also proposed in [12].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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

Kaya

Güney²,

Yildiz³

et al. 2009

PIER M

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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.

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Section: Numerical Results and Discussionmentioning

confidence: 94%

“…2 and 3. The results of synthesis formulas proposed by Yildiz and Turkmen [12] are also given in these figures for comparison. Figs.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Kaya

Güney²,

Yildiz³

et al. 2009

PIER M

Self Cite

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Compact closed-form expressions for the propagation parameters of a finite ground width coplanar transmission waveguide with thick electrodes

Fuste

Santos

Rodríguez

2012

IET Microw. Antennas Propag.

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Compact closed-form mathematical expressions are presented for the effective permittivity, characteristic impedance and attenuation constant of coplanar waveguides with thick electrodes and high-frequency dispersion. Excellent agreements, for a wide range of frequencies, up to 100 GHz and for conductor thicknesses up to 40 m are found with full-wave finite-element results from commercial software (HFSS) in a margin of geometric parameter values and frequencies of interest for the design and optimisation of high-speed electro-optical modulators. The formulae are simple and specially tailored to the narrow gap widths and thick electrodes typical of electro-optical modulator applications. Other approaches to closed-form formulae for CPW parameters are also compared and analysed.Peer ReviewedPostprint (published version

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ANN Synthesis Models Trained with Modified GA-LM Algorithm for ACPWs with Conductor Backing and Substrate Overlaying

Wang¹

2012

ETRI J

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Accurate synthesis models based on artificial neural networks (ANNs) are proposed to directly obtain the physical dimensions of an asymmetric coplanar waveguide with conductor backing and substrate overlaying (ACPWCBSO). First, the ACPWCBSO is analyzed with the conformal mapping technique (CMT) to obtain the training data. Then, a modified geneticalgorithm-Levenberg-Marquardt (GA-LM) algorithm is adopted to train ANNs. In the algorithm, the maximal relative error (MRE) is used as the fitness function of the chromosomes to guarantee that the MRE is small, while the mean square error is used as the error function in LM training to ensure that the average relative error is small. The MRE of ANNs trained with the modified GA-LM algorithm is less than 8.1%, which is smaller than those trained with the existing GA-LM algorithm and the LM algorithm (greater than 15%). Lastly, the ANN synthesis models are validated by the CMT analysis, electromagnetic simulation, and measurements.

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Synthesis formulas for conductor‐backed coplanar waveguide

Cited by 3 publications

References 14 publications

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

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

Compact closed-form expressions for the propagation parameters of a finite ground width coplanar transmission waveguide with thick electrodes

ANN Synthesis Models Trained with Modified GA-LM Algorithm for ACPWs with Conductor Backing and Substrate Overlaying

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