Synthesis formulas for coplanar lines in hybrid and monolithic MICs

Deng, Tianwei; Leong, M.S.; Kooi, P.S.; Yeo, T.S.

doi:10.1049/el:19961521

Cited by 12 publications

(26 citation statements)

References 4 publications

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“…The characteristic impedance for different values of dielectric slab permittivities, heights, strip separations and widths have thus been calculated. Results for symmetric CPS transmission lines have been compared with full wave simulation results as reported in [7], see table 1. In this table, t is the height of the dielectric and b is the separation of the identical strips of width W. The table reveals that the relative difference may be as high as 32%.…”

Section: Uniform Mediummentioning

confidence: 99%

“…Characteristic impedance calculations for symmetric CPS transmission lines, having adapted this effective relative permittivity in equation (8), have been compared with full wave simulation results as reported in [7], see figure 5. Again it should be noted that only the transmission line mode of the antenna has been modified for the dielectric slab.…”

Section: Half Spacesmentioning

confidence: 99%

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Improved design equations for asymmetric coplanar strip folded dipoles on a dielectric slab

Visser¹

2007

2nd European Conference on Antennas and Propagation (EuCAP 2007)

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Link to publication Citation for published version (APA):Visser, H. J. (2007). Improved design equations for asymmetric coplanar strip folded dipoles on a dielectric slab. In The Second European Conference on Antennas and Propagation, 2007. EuCAP 2007. 11-16 November 2007. London: Institution of Engineering and Technology (IET). General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. AbstractDesign equations for the input impedance of the asymmetric strip folded dipole, developed by Lampe, [2,3], depend, amongst others, on the characteristic impedance of an asymmetric coplanar strip (CPS) transmission line. Lampe assumes a homogeneous surrounding medium. In practice, the antenna will be realised on a dielectric slab. Employing the Lampe equations for this inhomogeneous case may lead to relative errors in the CPS characteristic impedance as much as 32% and therefore to large errors in the input impedance. Improved design equations for the input impedance are discussed for the inhomogeneous case. These improved design equations rely on an accurate calculation of the characteristic impedance of an asymmetric CPS on a dielectric slab and further employ correction factors applied to the homogeneous case dipole length and equivalent radius.

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Section: Uniform Mediummentioning

confidence: 99%

Section: Half Spacesmentioning

confidence: 99%

Improved design equations for asymmetric coplanar strip folded dipoles on a dielectric slab

Visser¹

2007

2nd European Conference on Antennas and Propagation (EuCAP 2007)

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“…The synthesis models were also presented in the literature [10][11][12]. These synthesis models are directly used to obtain the physical dimensions of CPS structures for the required design specifications.…”

Section: Introductionmentioning

confidence: 99%

“…These synthesis models are directly used to obtain the physical dimensions of CPS structures for the required design specifications. The model proposed by Deng et al [10] is mathematically complex. The models presented by Yildiz [11] and Yildiz et al [12] are simple but do not have very good accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…These neural models were trained with LM [25], BR [26], QN [27], CGF [28], and SCG [29] learning algorithms to obtain better performance and faster convergence with a simpler structure. For the validation of the neural models proposed in this paper, the neural synthesis results have been compared with the results of the quasi-static analysis [6] and the synthesis formulas proposed by other researchers [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Neural Models for Coplanar Strip Line Synthesis

Yildiz¹,

Güney²,

Türkmen³

et al. 2007

PIER

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Abstract-Simple and accurate models based on artificial neural networks (ANNs) are presented to accurately determine the physical dimensions of coplanar strip lines (CPSs). Five learning algorithms, Levenberg-Marquardt (LM), bayesian regularization (BR), quasiNewton (QN), conjugate gradient with Fletcher (CGF), and scaled conjugate gradient (SCG), are used to train the neural models. The neural results are compared with the results of the quasi-static analysis and the synthesis formulas available in the literature. The accuracy of the neural model trained by LM algorithm is found to be better than 0.24% for 10614 CPS samples.

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Coplanar Waveguide and Coplanar Stripline

2021

Introduction to Modern Planar Transmission Lines

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Synthesis formulas for coplanar lines in hybrid and monolithic MICs

Cited by 12 publications

References 4 publications

Improved design equations for asymmetric coplanar strip folded dipoles on a dielectric slab

Improved design equations for asymmetric coplanar strip folded dipoles on a dielectric slab

Neural Models for Coplanar Strip Line Synthesis

Coplanar Waveguide and Coplanar Stripline

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