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Asymptotic boundary conditions for strip-loaded and corrugated surfaces and waveguides
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TLDR
In this article, the unidirectional current screen was used as an asymptotic strip boundary condition (ASBC) for analysis of field problems containing metal strip grids.Abstract:
We discuss the unidirectional current screen as an asymptotic strip boundary condition (ASBC) for analysis of field problems containing metal strip grids, and we introduce a related asymptotic corrugation boundary condition (ACBC) for analysis of corrugated surfaces. The boundary conditions are asymptotic in the sense that the exact boundary conditions approach the asymptotic ones when the strip and corrugation periods approach zero. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 14: 99–101, 1997.read more
Citations
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Journal ArticleDOI
Magnetic-Type Dyadic Green's Functions for a Corrugated Rectangular Metaguide Based on Asymptotic Boundary Conditions
Islam A. Eshrah,Ahmed A. Kishk +1 more
TL;DR: In this article, the Green's functions for the magnetic scalar and electric vector potentials are derived for a rectangular waveguide with dielectric-filled corrugations supporting left-hand, as well as right-hand propagation.
Proceedings Article
Efficient spectral domain Green's function analysis of novel metamaterial bandgap guiding structures
TL;DR: In this paper, two different realizations of the periodic structures were considered: the bed-of-nails surface and the mushroom surface, and the results revealed the dispersion characteristics of the observed structures and the bandwidth usable in the waveguide applications.
Proceedings ArticleDOI
Modal solutions in dual-depth longitudinally corrugated waveguides for design of dual-band 20/30 GHz hard horns
S. Skobelev,P.-S. Kildal +1 more
TL;DR: In this article, a dual-depth longitudinally corrugated waveguide is used for the creation of a dual frequency hard horn, and the cross section of the cross-section is shown.
Proceedings ArticleDOI
Validation of the asymptotic corrugation boundary condition for circular cylinders with dielectric filled corrugations
TL;DR: In this article, the asymptotic corrugation boundary condition (ACBC) is improved by introducing in the analysis the ratio of the corrugations width to the Corrugation period.
Journal ArticleDOI
Efficient Analysis of Longitudinally Corrugated Rods Using Asymptotic Boundary Conditions for Investigation of Conductor Losses and Plasmonic Field Localization
TL;DR: In this article, an analytical modal method that provides quick yet accurate surface-wave solutions for tackling longitudinally corrugated conducting circular rods with dielectric-filled grooves was proposed.
References
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Impedance boundary conditions for imperfectly conducting surfaces
TL;DR: In this article, the exact electromagnetic boundary conditions at the surface of a material of large refractive index can be approximated to yield the usual impedance or Leontovich boundary conditions, which are valid for surfaces whose radii of curvature are large compared with the penetration depth.
Proceedings Article
Three metamaterial-based gap waveguides between parallel metal plates for mm/submm waves
TL;DR: In this article, the basic ideas of how local waveguides and transmission lines can be designed to propagate along desired paths in the air gap between two metal surfaces are presented, related to the performance of artificial magnetic conductors, EBG surfaces and soft and hard surfaces.
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Dispersion Characteristics of a Metamaterial-Based Parallel-Plate Ridge Gap Waveguide Realized by Bed of Nails
TL;DR: In this paper, an approximate analytical solution for this confined quasi-TEM dominant mode of the ridge gap waveguide, when the metamaterial surface is an artificial magnetic conductor in the form of a bed of nails, is presented.
Journal ArticleDOI
Construction of Green's functions of parallel plates with periodic texture with application to gap waveguides - a plane-wave spectral-domain approach
TL;DR: In this paper, the dispersion characteristics of the quasi-transverse electromagnetic modes that propagate along the ridges or strips, including their lower and upper cut-off frequencies, were investigated.
Journal ArticleDOI
Electromagnetic scattering from conducting circular cylinder coated by meta-materials and loaded with helical strips under oblique incidence
L.K. Hady,Ahmed A. Kishk +1 more
TL;DR: In this article, the asymptotic strip boundary condition (ASBC) is applied to analyze the solution of the electromagnetic scattering from a conducting cylinder coated with a homogeneous linear material layer and loaded with conducting helical strips.