Using the Concept of Surface Impedance in Problems of Electrodynamics (75 Years Later)

Berdnik, Sergey L.; Penkin, Dmitriy; Katrich, V. A.; Penkin, Yuriy M.; Nesterenko, Mikhail

doi:10.15407/rpra19.01.057

Cited by 18 publications

(8 citation statements)

References 22 publications

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“…The normalized impedance of the film material can be estimate by substituting the energy coefficients S 11 (12) obtained at a fixed frequency into expression (4). The surface impedance thus obtained can be used within the impedance concept to carry out electrodynamic simulation of complex microwave devices with thin-film components [11].…”

Section: Methodology Of Surface Impedance Determinationmentioning

confidence: 99%

“…It is also easy to verify that relations (6) are valid for the waveguide without insert. Formulas (4)-(6) determining the film impedances are new as compared to the known ones which can be found in the review [11]. It is self-evident that the waveguide method for determining the surface impedance of thin graphite films can be realized using waveguides with various cross sections.…”

Section: Methodology Of Surface Impedance Determinationmentioning

confidence: 99%

“…The authors have not found any references concerning application of waveguide techniques for estimating surface impedances of thin graphite films. Formulas for determining the impedance of the thin films are new as it follows from the extensive bibliographic list in the review [11]. A technology of the thin film production based on ion-beam carbon deposition in argon atmosphere has already been developed to obtain graphite-like layers where the content of sp 3 hybridized carbon atoms does not exceed 7% (see, e.g., [1]).…”

Section: Introductionmentioning

confidence: 99%

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Surface Impedance of Thin Graphite Films at Microwave Frequencies

Penkin¹,

Katrich²,

Nesterenko³

et al. 2018

PIER M

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Surface impedance of thin graphite films with metallic properties is evaluated by a waveguide technique based on measuring reflection and transmission coefficients of thin film membranes at operating frequencies in rectangular waveguides. One-and two-layer membranes of finite thickness, completely filling the waveguide cross-section, are investigated. Formulas allowing analytical estimates of surface impedances for nonmagnetic films made of amorphous carbon are derived. Simulation results for graphite films at frequencies from 5 to 10 GHz are analyzed.

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Section: Methodology Of Surface Impedance Determinationmentioning

confidence: 99%

Section: Methodology Of Surface Impedance Determinationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface Impedance of Thin Graphite Films at Microwave Frequencies

Penkin¹,

Katrich²,

Nesterenko³

et al. 2018

PIER M

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“…Detailed review of research on the use of the concept of surface impedance in the modeling of electrodynamics problems is presented, in particular, in [3,9]. At the same time, in most of the cited papers, mathematical models of the diffusion of non-uniform electromagnetic field are limited of a small value of penetration depth or insignificant field non-uniformity at the body surface.…”

Section: Introductionmentioning

confidence: 99%

Impedance Boundary Condition of Non-Uniform Electromagnetic Field Penetration Into Conducting Half-Space

Vasetsky¹

2022

Teh. elektrodin.

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The influence of the non-uniformity of the external field to its distribution on the surface of the conducting half-space is investigated on the basis of exact analytical and approximate asymptotic calculation methods of an arbitrary three-dimensional electromagnetic field. The function that generalizes the impedance boundary condition for diffusion of non-uniform field into conducting body is proposed. On the basis of calculations results comparison by exact and approximate methods for concrete model of electromagnetic system the admissible value of the upper limit of the introduced small parameter is established. References 10, figures 5.

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“…In [9,10], the theory of surface impedance was constructed for surface of bodies with a double curvature. A detailed review of works using the concept of surface impedance in electrodynamics problems, where the geometric and physical properties of real boundary surfaces are taken into account, is given in [11].…”

Section: Introductionmentioning

confidence: 99%

Nonuniform Electromagnetic Field at the Interface Between Dielectric and Conducting Media

Vasetsky¹

2020

PIER Letters

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The study of the electromagnetic field, taking into account eddy currents in the conductive half-space, is based on the exact analytical solution of the general three-dimensional quasi-stationary problem. The mathematical model includes an approximate solution using asymptotic expansion in the case of strong skin effect. Analytical expressions are obtained for the electric and magnetic fields at a flat interface in the form of limited asymptotic series, each term of which is expressed through a known field of external sources. The expressions take into account the nonuniformity of the field near the surface, since they contain its derivatives with respect to the coordinate. The series expansion was carried out according to a small parameter, which is proportional to the ratio of the field penetration depth to the distance between the interface and the sources of the external field. The found expressions generalize the approximate boundary impedance condition for the case of the penetration of nonuniform electromagnetic field into conductive medium.

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Using the Concept of Surface Impedance in Problems of Electrodynamics (75 Years Later)

Cited by 18 publications

References 22 publications

Surface Impedance of Thin Graphite Films at Microwave Frequencies

Surface Impedance of Thin Graphite Films at Microwave Frequencies

Impedance Boundary Condition of Non-Uniform Electromagnetic Field Penetration Into Conducting Half-Space

Nonuniform Electromagnetic Field at the Interface Between Dielectric and Conducting Media

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