Single-Layer Circularly-Polarized $Ka$ -Band Antenna Using Gap Waveguide Technology

Ferrando-Rocher, Miguel; Herranz-Herruzo, Jose I.; Valero‐Nogueira, Alejandro; Vila-Jimenez, A.

doi:10.1109/tap.2018.2835639

Cited by 72 publications

(41 citation statements)

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“…This compact network provides a uniform power distribution suitable for array feeding, as successfully demonstrated in other GW array antennas in Kaband [6]. Taking advantage of these GW features, a multitude of linearly-polarized [7], circularly-polarized [8] or dualpolarized antennas [9] have been developed already. However, the dual-band capability has not been addressed yet.…”

Section: Introductionmentioning

confidence: 99%

Full-Metal K-Ka Dual-Band Shared-Aperture Array Antenna Fed by Combined Ridge-Groove Gap Waveguide

Ferrando-Rocher

Herranz-Herruzo

Valero‐Nogueira

et al. 2019

Antennas Wirel. Propag. Lett.

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This paper presents an 8×8 dual-band sharedaperture array antenna operating in K (19.5-21.5 GHz) and Kaband (29-31 GHz) using Gap Waveguide technology. Radiating elements consist of circular apertures located on the top plate of the antenna and excited by two stacked cavities with different diameters for dual-frequency operation. A waffle grid is used on top to increase the effective area of apertures and reduce grating lobes. Each stacked cavity is fed by its appropriate corporate-feeding network: the upper feeding layer operates at 20-GHz band and the lower one at 30-GHz band. As a result, the antenna presents two ports, one for each band, which radiate a directive farfield pattern with linear polarization, orthogonal to each other. Experimental results show impedance and radiation pattern bandwidths larger than 1.5 GHz in both bands.

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Section: Introductionmentioning

confidence: 99%

Full-Metal K-Ka Dual-Band Shared-Aperture Array Antenna Fed by Combined Ridge-Groove Gap Waveguide

Ferrando-Rocher

Herranz-Herruzo

Valero‐Nogueira

et al. 2019

Antennas Wirel. Propag. Lett.

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“…Notable examples of multilayer GW arrays in this frequency band are presented in [7]- [10]. There exist scarce contributions of GW arrays following a single-layer scheme [11]- [12], but none of them working at V band.…”

Section: Introductionmentioning

confidence: 99%

60 GHz Single-Layer Slot-Array Antenna Fed by Groove Gap Waveguide

Ferrando-Rocher

Valero‐Nogueira

Herranz-Herruzo

et al. 2019

Antennas Wirel. Propag. Lett.

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A V-band single-layer low-loss slot-array antenna is presented in this paper. Radiating slots are backed by coaxial cavities which are fed through a Groove Gap Waveguide (GGW) E-plane corporate feed network. Cavity resonances are created by shortening nails with respect to the surrounding ones. This fact enables a compact single-layer architecture since coaxial cavities and feeding network can share the same bed of nails. A 16×16 array is designed, constructed and measured to demonstrate the viability of this concept for high-gain single-layer slot-array antennas. In addition, this solution can be extended to circular polarization by seamlessly adding a polarizer above the slots without changing the feeding network piece. Measurements show a relative bandwidth of 10% with input reflection coefficient better than −10 dB and a mean antenna efficiency above 70% within the operating frequency band (57-66 GHz).

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“…3D model of the 4×4 antenna. Detailed views of one radiating cavity and the input transition are enlarged[235].…”

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confidence: 99%

“…A complete view from the WR-28 input port to the first GGW, passing through the input RGW, can be seen. Most relevant dimensions of the WR-28 to RGW transition are shown[235].…”

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confidence: 99%

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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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Single-Layer Circularly-Polarized $Ka$ -Band Antenna Using Gap Waveguide Technology

Cited by 72 publications

References 13 publications

Full-Metal K-Ka Dual-Band Shared-Aperture Array Antenna Fed by Combined Ridge-Groove Gap Waveguide

Full-Metal K-Ka Dual-Band Shared-Aperture Array Antenna Fed by Combined Ridge-Groove Gap Waveguide

60 GHz Single-Layer Slot-Array Antenna Fed by Groove Gap Waveguide

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

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