Analysis and design of an inhomogeneous transformer with hard wall waveguide sections

Ozkar, M.; Mortazawi, Amir

doi:10.1109/75.843099

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…Another application of AMC surface can be seen in the development of quasi‐transverse electromagnetic (TEM) waveguides in which the phase velocity is equal to the speed of light in freespace, and field distribution becomes uniform in the center of the waveguide at a specific frequency point. The uniform fields can improve the efficiency of quasi‐optical amplifiers , horn antennas , and sub‐wavelength aperture antennas for the realization of compact planar arrays .…”

Section: Introductionmentioning

confidence: 99%

Quasi‐TEM Rectangular Waveguides with Frequency Selective Surface Walls: Part I–Electrical Properties and Geometrical Characteristics

Mallat

2013

Int J Numerical Modelling

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Electrical properties and geometrical characteristics of frequency‐selective‐surface‐loaded quasi‐transverse electromagnetic (TEM) rectangular waveguides are investigated in detail. The properties of electrical field distributions over the cross section of waveguides at various periodical phase shift points are studied. The phenomena, in connection with artificial magnetic conductor (AMC), cavity resonance, and surface resonance, are discussed. A definition of bandwidth for AMC is proposed on the basis of the variation of average z‐polarized electric fields along z‐axis between two side dielectric surfaces. Standard deviation technique is used to describe the uniformity of electrical fields and cavity efficiency is defined to represent the percentage of useful cavity with uniform electrical fields. The dispersion relationship, bandwidths of AMC and single mode, and cavity efficiency for various types of AMC surfaces are examined and compared. The geometrical characteristics of quasi‐TEM waveguides are studied in both theory and experiment. Design rules for high‐quality quasi‐TEM waveguides are proposed. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Quasi‐TEM Rectangular Waveguides with Frequency Selective Surface Walls: Part I–Electrical Properties and Geometrical Characteristics

Mallat

2013

Int J Numerical Modelling

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“…In 1999, Itoh and his group presented an important application of AMC surfaces to realize waveguides characterized by a uniform eld distribution at a specic frequency, referred as quasi-TEM waveguides, or hard waveguides [68]. The AMC structures nd applications in quasi-optical ampliers [193],…”

Section: Introductionmentioning

confidence: 99%

Application of metamaterial structures in the design, analysis and prototyping of planar : Antennas aplicación de estructuras metamateriales en el diseño, análisis y y prototipado de antenas planas

González¹

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Influence of hard corrugated PBG wall design on performance of conical horn antenna

Skobelev¹,

Kildal²

2002

Micro & Optical Tech Letters

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Analysis and design of an inhomogeneous transformer with hard wall waveguide sections

Cited by 7 publications

References 7 publications

Quasi‐TEM Rectangular Waveguides with Frequency Selective Surface Walls: Part I–Electrical Properties and Geometrical Characteristics

Quasi‐TEM Rectangular Waveguides with Frequency Selective Surface Walls: Part I–Electrical Properties and Geometrical Characteristics

Application of metamaterial structures in the design, analysis and prototyping of planar : Antennas aplicación de estructuras metamateriales en el diseño, análisis y y prototipado de antenas planas

Influence of hard corrugated PBG wall design on performance of conical horn antenna

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