An analytical method for direct calculation of E and H-field patterns of conductor-backed coplanar waveguides

Gillick, M.; Robertson, I.D.; Joshi, J.S.

doi:10.1109/22.245685

Cited by 23 publications

(10 citation statements)

References 8 publications

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“…If a cross-sectional model consists of three analysis regions, CI, CII, or CIII represents the line capacitance of Regions 1-3, respectively. Then, the characteristic line impedance can be obtained by using (25), and the effective permittivity eff can be expressed as (26), where C I ′ , C II ′ , and C III ′ are the capacitances with air filling.…”

Section: Characteristic Line Impedancementioning

confidence: 99%

“…For the optimal impedance matching, the characteristic line impedance values along the transition length can be specified. Then, the design parameters to attain the specific characteristic line impedance at a certain location of the transition can be obtained by an inverse relation of (25).…”

Section: Characteristic Line Impedancementioning

confidence: 99%

“…Each planar transmission line has unique advantages and short-comings as compared with other line types [23][24][25][26][27][28][29][30]. Also, the configuration of the physical structure including the signal line and ground line(s) (or ground plane(s)) of a certain planar transmission line is different from those of other lines (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Generalized Design Technique of Ultra-Wideband Transitions for Quasi-TEM Planar Transmission Lines Based on Analytical Models

et al. 2021

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A generalized design technique of ultra-wideband planar transitions using EM-based analytical models is presented in this paper. Among various planar transmission lines, each transmission line has unique advantages over other line types, and a microwave component in a system can be designed to perform much better if it is implemented on a certain type of transmission line. Therefore, low-loss and high-performance transitions between transmission lines, with easy integrability with the main circuit board, are needed. The proposed transition design technique uses the Schwarz-Christoffel transformation, which is one of conformal mapping methods, and can be applied to design any planar transition between a pair combination of planar transmission lines based on TEM or quasi-TEM waves. To optimally match the characteristic line impedance and smoothly transform the electromagnetic field distribution between the planar transmission lines, entire cross-sections through the planar transition should be analyzed with proper models. In this paper, the crosssections of planar transitions are categorized into 4 cross-sectional models, where each cross-section is divided into multiple regions for the analysis to obtain line capacitance. Therefore, for the 4 cross-sectional models, 7 types of basis structures are identified to obtain their capacitances by applying conformal mapping. By adding capacitances of a combination of the 7 analysis types, the total line capacitance, thus the characteristic line impedance, of any cross-sectional model of the planar transition can be obtained. The characteristic line impedance of each cross-sectional model calculated with the proposed analytical formulas is compared with the 3D EM calculations, and it is found that the deviated values are mostly well under 6%. This proposed technique enables to design various planar transitions efficiently and quickly for the maximum performance without parameter tuning trials, by providing optimal impedance matching and smooth field transformation up to mm-wave frequencies.INDEX TERMS Conformal mapping, cross-sectional model, planar transition, planar transmission line, Schwarz-Christoffel transformation.

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Section: Characteristic Line Impedancementioning

confidence: 99%

Section: Characteristic Line Impedancementioning

confidence: 99%

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Generalized Design Technique of Ultra-Wideband Transitions for Quasi-TEM Planar Transmission Lines Based on Analytical Models

et al. 2021

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“…[1][2][3] Currently, they are widely used in commercial and military devices, such as domestic microwave ovens, satellites, mobile phones, messaging apparatuses, palmtops, organizers, as well as fighter planes, rockets, and warships via military stealth technology. 1,7,8 To achieve this type of thin soft magnetic film, different sputtering systems are usually employed. 1,7,8 To achieve this type of thin soft magnetic film, different sputtering systems are usually employed.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of granular FeCoNi films with large permeability for microwave applications

Zong

Pong²,

et al. 2011

J. Mater. Chem.

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A simple methodology to fabricate soft magnetic FeCoNi granular films from cheap salt solutions via electrodeposition at room temperature is demonstrated. With the addition of a small quantity of organic and inorganic additives into the solutions, the FeCoNi nano-granular films possess ultra-high permeability, large resistivity, and other desirable magnetic properties for gigahertz microwave applications. Typically, the films have a coercivity of less than 10 or 20 Oe along the hard or easy axis, respectively, with a saturation flux density of up to 2.43 T. The magnetic permeability and resistivity are correspondingly up to a magnitude order of about 10 3 and 10 À4 U cm. These soft FeCoNi films also show a big anisotropic field of more than 50 Oe and a very small magnetostriction of <10 À5 . They can be potentially applied to microwave absorption as well as other applications.

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“…The numerical formulas based on SDA were presented in [7] for the analysis of the quasi-TEM parameters of CBCPW structures. A direct method of calculating the electromagnetic field patterns surrounding the CBCPW was proposed by Gillick et al [8]. The dispersion characteristics of the finite-width CBCPW were obtained by rigorous full-wave mode-matching method incorporating the metal modes [9].…”

Section: Introductionmentioning

confidence: 99%

Neural models for the V‐shaped conductor‐backed coplanar waveguides

Güney

Yildiz

Kaya

et al. 2007

Micro & Optical Tech Letters

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An analytical method for direct calculation of E and H-field patterns of conductor-backed coplanar waveguides

Cited by 23 publications

References 8 publications

Generalized Design Technique of Ultra-Wideband Transitions for Quasi-TEM Planar Transmission Lines Based on Analytical Models

Generalized Design Technique of Ultra-Wideband Transitions for Quasi-TEM Planar Transmission Lines Based on Analytical Models

Electrodeposition of granular FeCoNi films with large permeability for microwave applications

Neural models for the V‐shaped conductor‐backed coplanar waveguides

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