Dispersion Analysis of Periodically Loaded Transmission Lines with Twist Symmetry Using the Mode-Matching Technique

Zetterström, Oskar; Valerio, Guido; Mesa, Francisco; Ghasemifard, Fatemeh; Norgren, Martin; Quevedo–Teruel, Oscar

doi:10.3390/app10175990

Cited by 7 publications

(4 citation statements)

References 45 publications

(68 reference statements)

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“…Although there has been intensive research on periodic structures with higher symmetries over the last five years, there are still many theoretical and practical questions that need to be discussed. Extensive theoretical modeling based on the mode matching approach has shown the advantages and limitations of these structures, and this is in agreement with the results obtained using general numerical solvers [10,[16][17][18][19][20][21]. The focus of these works was on geometries that have glide symmetry in two directions.…”

Section: Introductionsupporting

confidence: 74%

Glide-Symmetric Holey Structures Applied to Waveguide Technology: Design Considerations

Šipuš

Cavar

Bosiljevac

et al. 2020

Sensors

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Recently, there has been an increased interest in exploring periodic structures with higher symmetry due to various possibilities of utilizing them in novel electromagnetic applications. The aim of this paper is to discuss design issues related to the implementation of holey glide-symmetric periodic structures in waveguide-based components. In particular, one can implement periodic structures with glide symmetry in one or two directions, which we differentiate as 1D and 2D glide symmetry, respectively. The key differences in the dispersion and bandgap properties of these two realizations are presented and design guidelines are indicated, with special care devoted to practical issues. Focusing on the design of gap waveguide-based components, we demonstrate using simulated and measured results that in practice it is often sufficient to use 1D glide symmetry, which is also simpler to mechanically realize, and if larger attenuation of lateral waves is needed, a diagonally directed 2D glide symmetric structure should be implemented. Finally, an analysis of realistic holes with conical endings is performed using a developed effective hole depth method, which combined with the presented analysis and results can serve as a valuable tool in the process of designing novel electrically-large waveguide-based components.

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Section: Introductionsupporting

confidence: 74%

Glide-Symmetric Holey Structures Applied to Waveguide Technology: Design Considerations

Šipuš

Cavar

Bosiljevac

et al. 2020

Sensors

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“…Periodic arrays of helical structures forming chiral metamaterials were studied in [68] by means of modal analysis techniques. In addition, efficient semi-analytical formulations based on the mode-matching method and Floquet modal expansions were developed recently for the analysis of metasurfaces and transmission lines involving higher symmetries (glide and twist) [69][70][71][72]. These formulations have potential to be adapted to mimic the interesting properties associated to higher symmetries (low dispersion, wideband, and higher refractive index) in more complex 3-D structures.…”

Section: Modal Analysismentioning

confidence: 99%

3-D Metamaterials: Trends on Applied Designs, Computational Methods and Fabrication Techniques

2022

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Metamaterials are artificially engineered devices that go beyond the properties of conventional materials in nature. Metamaterials allow for the creation of negative refractive indexes; light trapping with epsilon-near-zero compounds; bandgap selection; superconductivity phenomena; non-Hermitian responses; and more generally, manipulation of the propagation of electromagnetic and acoustic waves. In the past, low computational resources and the lack of proper manufacturing techniques have limited attention towards 1-D and 2-D metamaterials. However, the true potential of metamaterials is ultimately reached in 3-D configurations, when the degrees of freedom associated with the propagating direction are fully exploited in design. This is expected to lead to a new era in the field of metamaterials, from which future high-speed and low-latency communication networks can benefit. Here, a comprehensive overview of the past, present, and future trends related to 3-D metamaterial devices is presented, focusing on efficient computational methods, innovative designs, and functional manufacturing techniques.

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“…Periodic arrays of helical structures forming chiral metamaterials are studied in [65] by means of modal analysis techniques. In addition, efficient semi-analytical formulations based on the mode-matching method and Floquet modal expansions have been developed recently for the analysis of metasurfaces and transmission lines involving higher symmetries (glide and twist) [66][67][68][69]. These formulations have potential to be adapted to mimic the interesting properties associated to higher symmetries (low dispersion, wideband, higher refractive index) in more complex 3-D structures.…”

Section: Modal Analysismentioning

confidence: 99%

3-D Metamaterials: Trends on Applied Designs, Computational Methods and Fabrication Techniques

Alex-Amor,

Palomares-Caballero,

Molero

2021

Preprint

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Metamaterials are artificially engineered devices that go beyond the properties of conventional materials in nature. Metamaterials allow the creation of negative refractive indexes, light trapping with epsilon-nearzero compounds, bandgap selection, superconductivity phenomena, non-Hermitian responses and, more generally, to manipulate the propagation of electromagnetic and acoustic waves. In the past, low computational resources and the lack of proper manufacturing techniques have limited the attention to 1-D and 2-D metamaterials. However, the true potential of metamaterials will be ultimately reached in 3-D configurations, when the degrees of freedom associated to the propagating direction are finally exploited in design. This is expected to lead to a new era in metamaterial field, from which future high-speed and low-latency communication networks can benefit. Here, a comprehensive overview of the past, present and future trends related to 3-D metamaterial devices is presented, focusing on efficient computational methods, innovative designs and functional manufacturing techniques.

show abstract

Dispersion Analysis of Periodically Loaded Transmission Lines with Twist Symmetry Using the Mode-Matching Technique

Cited by 7 publications

References 45 publications

Glide-Symmetric Holey Structures Applied to Waveguide Technology: Design Considerations

Glide-Symmetric Holey Structures Applied to Waveguide Technology: Design Considerations

3-D Metamaterials: Trends on Applied Designs, Computational Methods and Fabrication Techniques

3-D Metamaterials: Trends on Applied Designs, Computational Methods and Fabrication Techniques

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