Characteristics of asymmetrical conductor-backed coplanar waveguides

Chang, Jiunn-Jye; Wang, Way‐Seen

doi:10.1080/00207219208925604

Cited by 4 publications

(7 citation statements)

References 7 publications

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“…Also, CBCPWs have the advantage of mechanical strength, heat sinking ability, and lower characteristic impedance than conventional coplanar waveguide in designing microwave‐integrated circuits (MICs). These and several other advantages make CBCPWs ideally suited for MIC as well as monolithic MIC (MMIC) applications [1–15].…”

Section: Introductionmentioning

confidence: 99%

“…The symmetric CBCPWs [1–10] and asymmetric CBCPWs (ACBCPWs) [11–15] have been presented and analyzed in the literature. In practice, asymmetric CBCPWs having all advantages of symmetric CBCPWs are useful in some particular applications [11–15]. The analytical formulas have been proposed for calculating the quasi‐TEM parameters of the ACBCPW without or with upper shielding [11].…”

Section: Introductionmentioning

confidence: 99%

“…In practice, asymmetric CBCPWs having all advantages of symmetric CBCPWs are useful in some particular applications [11–15]. The analytical formulas have been proposed for calculating the quasi‐TEM parameters of the ACBCPW without or with upper shielding [11]. The effective permittivity, characteristic impedance, and electric‐field strength of ACBCPWs have been obtained in [12].…”

Section: Introductionmentioning

confidence: 99%

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

Kaya

Güney

Yildiz

et al. 2010

Micro & Optical Tech Letters

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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

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Kaya

Güney

Yildiz

et al. 2010

Micro & Optical Tech Letters

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“…However, the conventional ACPW [4] is sensitive to environmental effects because its fields are less confined than those of microstrip lines. To solve this problem, an ACPW with conductor backing (ACPWCB) was proposed in [5]. It allows easy implementation of mixed coplanarmicrostrip circuits and reduces radiation effects.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, some ACPWs have been analyzed with the conformal mapping technique (CMT) [4], [5], [9]- [12]. In 1995, the overlaid supported ACPW [10] was analyzed with the CMT.…”

Section: Introductionmentioning

confidence: 99%

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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Dispersion characteristics of asymmetrical coplanar waveguides with anisotropic substrates

Chang

1996

Int. J. Microw. Mill.-Wave Comput.-Aided Eng.

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In this article, for asymmetrical coplanar waveguides with anisotropic substrates, the analytical dispersion formulas for effective dielectric constant ϵeff are first derived and then used to study the frequency‐dependent characteristics ϵeff(f). The errors in the dispersion formulas are less than 2% when compared with the available results. In addition, based on the derived dispersion formulas and the Fourier transform, the effects of signal dispersion are studied for a Gaussian pulse propagating on an asymmetrical coplanar waveguide with anisotropic substrate. © 1996 John Wiley & Sons, Inc.

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Characteristics of asymmetrical conductor-backed coplanar waveguides

Cited by 4 publications

References 7 publications

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

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

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

Dispersion characteristics of asymmetrical coplanar waveguides with anisotropic substrates

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