Multimode propagation on radiating traveling-wave structures with glide-symmetric excitation

Kieburtz, Richard B.; Impagliazzo, John

doi:10.1109/tap.1970.1139607

Cited by 49 publications

(23 citation statements)

References 2 publications

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“…Enforcing the continuity of the magnetic fields (8) and (19) across the corrugation aperture and projecting this equation on each waveguide modal function Φ m (x) (multiplying both sides of the equation by Φ m (x) and integrating over the corrugation aperture), the following linear equations are obtained:…”

Section: Glide-symmetric Boundary Conditions For the 1d Structurementioning

confidence: 99%

“…Higher symmetries were at first studied decades ago in connection to the theory of periodic waveguides [12], [16]- [19], and a generalized Floquet theorem was stated in [12]. The interest for glide symmetric structures recently renewed after several years in connection with the recent development of metamaterials and metasurfaces related to backward propagation [20], leaky radiation [21] and artificial materials [22], [23].…”

Section: Introductionmentioning

confidence: 99%

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Glide-Symmetric All-Metal Holey Metasurfaces for Low-Dispersive Artificial Materials: Modeling and Properties

Valerio

Ghasemifard

Šipuš

et al. 2018

IEEE Trans. Microwave Theory Techn.

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We study the wave propagation between two glidesymmetric metallic plates drilled with periodic rectangular holes. A mode-matching method is proposed in order to derive efficiently the dispersive properties of these periodic structures. The method takes advantage of the higher symmetry of the structure reducing the computational cost by enforcing boundary conditions on the field on only one of the two surfaces. Physical insight on specific symmetry properties of Floquet harmonics in glide-symmetric structures is also gained. The code is validated with commercial software assessing its accuracy when varying the most influential/critical parameters. We confirm the potential of glide-symmetric structures to tune the effective refractive index. Specifically, we demonstrate that glide-symmetric structures with rectangular shapes can be employed to synthesize anisotropic refractive indexes with a large band of operation, which makes such metasurface structures applicable for realization of UWB planar lenses.

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Section: Glide-symmetric Boundary Conditions For the 1d Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Glide-Symmetric All-Metal Holey Metasurfaces for Low-Dispersive Artificial Materials: Modeling and Properties

Valerio

Ghasemifard

Šipuš

et al. 2018

IEEE Trans. Microwave Theory Techn.

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“…The recent study of higher symmetries [1][2][3][4][5] was driven by a growing interest in the use of periodic structures to improve the electromagnetic properties of antennas and microwave devices. These symmetries were first investigated in the 1960s and 1970s for one-dimensional periodic structures [6][7][8], introducing the concepts of glide and screw (twist) symmetry. More recently, two-dimensional glide symmetries were proposed and studied, which are a particular case of higher symmetries, demonstrating great potential for modifying the dispersion properties of periodic structures [9,10].…”

Section: Introductionmentioning

confidence: 99%

One-Plane Glide-Symmetric Holey Structures for Stop-Band and Refraction Index Reconfiguration

2019

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This work presents a new configuration to create glide-symmetric structures in a single plane, which facilitates fabrication and avoids alignment problems in the assembly process compared to traditional glide-symmetric structures based on several planes. The proposed structures can be printed on the metal face of a dielectric substrate, which acts as a support. The article includes a parametric study based on dispersion diagrams on the appearance of stop-bands and phase-shifting by breaking the symmetry. In addition, a procedure to regenerate symmetry is proposed that may be useful for reconfigurable devices. Finally, the measured and simulated S parameters of 10 × 10 unit-cell structures are presented to illustrate the attenuation in these stop-bands and the refractive index of the propagation modes. The attenuation obtained is greater than 30 dB in the stop-band for the symmetry-broken prototype.

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“…A periodic structure possesses a higher symmetry if its unit cell is invariant under the composition of a translation and another geometrical operation [1][2][3][4]. The unit cell of a higher-symmetric periodic structure is composed of m subunit cells, where m is the degree of symmetry to which the compound symmetry operation, S, is applied.…”

Section: Introductionmentioning

confidence: 99%

“…The electromagnetic properties of structures possessing higher symmetries, and in particular twist and glide symmetries, were extensively studied in the 60s and 70s [1][2][3][4]. These initial works focused on the study of onedimensional structures, and the results have been applied in the design of forward and backward scanning leaky-wave antennas [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Propagation characteristics of periodic structures possessing twist and polar glide symmetries

Dahlberg

Ghasemifard

Valerio³

et al. 2019

EPJ Appl. Metamat.

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In this article, we provide an overview of the current state of the research in the area of twist symmetry. This symmetry is obtained by introducing multiple periods into the unit cell of a periodic structure through a rotation of consecutive periodic deformations around a symmetry axis. Attractive properties such as significantly reduced frequency dispersion and increased optical density, compared to purely periodic structures, are observed. The direct link between the symmetry order and these properties is illustrated through numerical simulations. Moreover, polar glide symmetry is introduced, and is shown to provide even further control of the dispersion properties of periodic structures, especially when combined with twist symmetry. Twist symmetries can, with benefit, be employed in the development of devices for future communication networks and space applications, where fully metallic structures with accurate control of the dispersion properties are desired.

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Multimode propagation on radiating traveling-wave structures with glide-symmetric excitation

Cited by 49 publications

References 2 publications

Glide-Symmetric All-Metal Holey Metasurfaces for Low-Dispersive Artificial Materials: Modeling and Properties

Glide-Symmetric All-Metal Holey Metasurfaces for Low-Dispersive Artificial Materials: Modeling and Properties

One-Plane Glide-Symmetric Holey Structures for Stop-Band and Refraction Index Reconfiguration

Propagation characteristics of periodic structures possessing twist and polar glide symmetries

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