Design Guidelines for Gap Waveguide Technology Based on Glide-Symmetric Holey Structures

Ebrahimpouri, Mahsa; Quevedo–Teruel, Oscar; Rajo‐Iglesias, Eva

doi:10.1109/lmwc.2017.2701308

Cited by 122 publications

(86 citation statements)

References 12 publications

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“…In Figure 14, we show the effect of using higher symmetries in the unit cells of cases b and d of Figure 1. For case b (identical pins on the top and bottom), we can clearly see in Figure 14a that a displacement of half the periodicity in one direction makes the structure less dispersive, as previously demonstrated for other types of unit cells [12]. An extra displacement added in the perpendicular direction shas a small effect in this case, probably due to the fact that we are calculating the equivalent refractive index only in the first zone of the Brillouin diagram (Γ-X).…”

Section: Equivalent Refractive Indexsupporting

confidence: 77%

“…The selection of some initial dimensions and their normalization with respect to a frequency is a common practice when doing parametric studies(see the previous examples in [4,11,12]). It is important to mention that as a consequence of the linearity of the electromagnetism, the results can be directly scaled to any desired frequency range.…”

Section: Stopband Analysismentioning

confidence: 99%

“…Gap waveguide technology is currently a reality and its use in designing antennas and components has been widely extended [10]. Alternatives to pin structures to create the stopband in a PPWG have emerged, such as half-size pins [11] and holes [12,13], mainly with the purpose of providing easier manufacturing of this technology.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Periodic Structures Made of Pins Inside a Parallel Plate Waveguide

et al. 2019

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In this work, we have analyzed different versions of periodic structures made with metallic pins located inside a parallel plate waveguide (PPWG), varying the symmetry and disposition of the pins. The analysis focuses on two main parameters related to wave propagation. On one hand, we have studied how the different proposed structures can create a stopband so that the parallel plate modes can be used in gap waveguide technology or filtering structures. On the other hand, we have analyzed the dispersion and equivalent refractive index of the first propagating transverse electromagnetic mode (TEM). The results show how the use of complex structures made with pins in the top and bottom plates of a PPWG have no advantages in terms of the achieved stopband size. However, for the case of the propagating mode, it is possible to find less dispersive modes and a higher range of equivalent refractive indices when using double-pin structures compared to a reference case with single pins.

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Section: Equivalent Refractive Indexsupporting

confidence: 77%

Section: Stopband Analysismentioning

confidence: 99%

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Analysis of Periodic Structures Made of Pins Inside a Parallel Plate Waveguide

et al. 2019

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“…Moreover, while the stop-band between the first and second modes is suppressed in glide-symmetric structures, a wide stop-band can be created between the second and third modes. This stop-band can be used to design low-cost gap waveguides [22][23][24] and low-cost contact-less waveguide flanges for millimeter wave measurements [25]. Due to the beneficial properties of glide symmetry, several methods for fast calculation of the dispersion characteristics of glidesymmetric structures (Cartesian and polar) have been presented [8,[26][27][28].…”

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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“…Glide symmetry is a novel cost-effective method to manufacture integrated waveguide structures at high frequencies. This concept makes use of a truncated glide-symmetric holey EBG structure [204]. The proposed EBG structure is only made of holes, which makes the manufacturing process easier with respect to the nails in gap waveguide technology.…”

Section: Glide Simmetrymentioning

confidence: 99%

Gap Waveguide Array Antennas and Corporate-Feed Networks for mm-Wave band Applications

Rocher¹

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Just when you think you know all the answers, the universe changes all the questions." iv a todo el mundo. En cualquier minuto y siempre sin un pero. Es un placer haber viajado contigo, compartido aventuras en Londres, Paris, Boston...y haber aprendido tanto de ti. También a Nora y María, las chicas de la sala del GRE. Vosotras sois parte imprescindible de este trabajo, hemos crecido juntos. Muchas gracias por todos los momentos de distensión, las risas, por apoyarme con la tesis y también con el teatro.Mariano, Eva, Vicent M., Marta, Lorenzo, Juan, Felipe. Conoceros aún más y aprender de vosotros ha sido un privilegio. Gracias, además, por haberme permitido compartir docencia con vosotros. Han sido momentos para crecer tanto profesional como vitalmente.Gente que va y viene. Que de algún modo siempre está. Marc, Cristina, Alexia, Jaime, por supuesto Toni B. y Tomás. Que suerte haberos conocido y que pena no haber compartido más tiempo. Sois personas brillantes y con mucha luz, ojalá pudiera robaros algo de ese magnetismo que transmitís, y ojalá, de la manera que sea, volvamos a encontrarnos. A la familia de Ecuador: Fernando, Diana, Carlos, Daniel, Anibal. A la de Marruecos: Zakaria, Hamza, Yousra. A la de Argentina: Juan Pablo, Alberto, Guillermo y tantos otros que seguro que olvido. También parte de este trabajo ha sido posible gracias a Ashraf, Jian, Abbas, Sadegh y Jin Lin, que fueron un apoyo fundamental durante mi estancia en Chalmers University of Technology. A mi familia. A mis abuelos Rosita y Miguel, Amparo y Salvador. Sé que habéis estado conmigo.A mi hermana Nuria, por aguantar mil cenas oyéndonos hablar de Antenas.A mi madre, por apoyarme y espolearme. Por exigirme siempre más cuando yo creo que es suficiente.A mi padre, por ser un guía infatigable, porque llegar hasta aquí a tu lado es de las mejores cosas que haré en esta vida.A Dulce, la mujer más extraordinaria del mundo. Si existe el destino, hizo bien al ponernos juntos. Tu a mi lado y yo al tuyo para superar todos los obstáculos y superar todas las barreras. Nunca habrá suficientes gracias por haberme apoyado tanto y haber sido tan paciente y sincera en cada etapa de este viaje.Es curioso como al final de todo, de tanto trabajo, debería sentirme inmensamente feliz, pero echando la vista atrás, no soy más feliz ahora que durante todo el camino recorrido a vuestro lado. Gracias.x

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Design Guidelines for Gap Waveguide Technology Based on Glide-Symmetric Holey Structures

Cited by 122 publications

References 12 publications

Analysis of Periodic Structures Made of Pins Inside a Parallel Plate Waveguide

Analysis of Periodic Structures Made of Pins Inside a Parallel Plate Waveguide

Propagation characteristics of periodic structures possessing twist and polar glide symmetries

Gap Waveguide Array Antennas and Corporate-Feed Networks for mm-Wave band Applications

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