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Ultra-Wideband Homogenization of Glide-Symmetric Holey Parallel-Plate Waveguides

Abstract : Glide-symmetric waveguides made of metallic metasurfaces are a wideband, low-loss, low-cost, and conformable alternative to dielectric materials for the design of antenna lenses at millimeter waves. However, computing the effective refractive index of glide-symmetric waveguides with existing full-wave analysis techniques results in cumbersome parametric studies for each new design. This paper presents a new analytic homogenization technique for glide-symmetric holey parallelplate waveguides. The dispersion equation of these structures, found by way of mode-matching, is simplified at low frequency using the properties of the modes resonating within the holes. This simplified equation yields a closed-form expression of the effective refractive index. This index characterizes propagation over an ultra-wide band, due to the low dispersive properties of glide symmetric structures. The formula avoids solving a fullwave problem and is applicable to any hole shape. It is a function of the angle of propagation within the waveguide, and can thus be used to study anisotropic properties. Its efficiency is demonstrated with the example of glide-symmetric parallel-plate waveguides with rectangular and circular holes.
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Contributor : Guido Valerio Connect in order to contact the contributor
Submitted on : Sunday, November 14, 2021 - 4:22:57 PM
Last modification on : Tuesday, January 4, 2022 - 6:41:22 AM


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  • HAL Id : hal-03427816, version 1


Boris Fischer, Guido Valerio. Ultra-Wideband Homogenization of Glide-Symmetric Holey Parallel-Plate Waveguides. IEEE Transactions on Antennas and Propagation, Institute of Electrical and Electronics Engineers, In press. ⟨hal-03427816⟩



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