A 45$^{\circ}$ Linearly Polarized Hollow-Waveguide 16$\,\times$16-Slot Array Antenna Covering 71–86 GHz Band

Tomura, Takashi; Hirokawa, Jiro; Hirano, Takuichi; Ando, Makoto

doi:10.1109/tap.2014.2345567

Cited by 70 publications

(36 citation statements)

References 17 publications

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“…The cross polarization is suppressed below -27 dB over the full bandwidth. In [14] the the cross polarization level are very well pressed under -30 dB, but this work has not achieved the outcome. The main reason for the problem is that the assembly of the four layers array antenna always has small geometrical errors, which makes the drop of gain and the rise of the cross-polarization and the reflection coefficient.…”

Section: Simulation and Measurement For The 8 × 8 Slot Arraymentioning

confidence: 60%

“…The feeding part is composed of equallysplit H-plane T-junctions and a vertical transition from WR-10 standard hollow waveguide from its back. In order to satisfy the radiation pattern of ETSI standard, the radiation slots in this work have been 45 o rotated [13]- [14]. Given the rising of the cross polarization level caused by 45 o degree rotation, a narrow-slot pair configuration on the top is designed to suppress the cross-polarization.…”

Section: Introductionmentioning

confidence: 99%

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Design of Wideband Slot Array Antenna by Groove Gap Waveguide in Millimeter Waves

Zamanl

Yangl

2018

2018 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)

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The newly introduced gap waveguide technology offers non-contact waveguide configurations so that the good electrical contact between different metallic layers can be avoided. Thereby, the gap waveguide structures are relatively simple to manufacture, especially at millimeter and sub-millimeter wave frequencies. This work systematically presents a high-efficiency corporate-fed slot array antenna based on groove gap waveguide in the millimeter waves. A cavity-backed slot sub-array is firstly designed in a groove gap waveguide cavity. The cavity is fed through a coupling hole from groove gap waveguide distribution network at the bottom layer. The sub-array is numerically optimized in an infinite array environment. Low side lobes are obtained in the both E-and H-planes by diagonal placement of the radiation slot rotating by 45 degrees. Furthermore, the radiation narrow slot pair is adopted so that the good cross polarization is achieved. The fabricated antenna depicts more than 25% bandwidth with input reflection coefficient better than-8 dB and the aperture efficiency higher than 60% with around 25 dBi realized gain between 70 and 90 GHz. The measured cross polarization level is below-27 dB, which satisfies the ETSI standard. Index Terms-groove gap waveguide, wide band slot array antenna.

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Section: Simulation and Measurement For The 8 × 8 Slot Arraymentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Design of Wideband Slot Array Antenna by Groove Gap Waveguide in Millimeter Waves

Zamanl

Yangl

2018

2018 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)

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“…As a result, beam tilting is occurred to degrade the performance on data transmission at fixed point wireless application in mm-Wave band [22]. To avoiding the degradation of the wireless communication capacity, use of corporate-feed antenna is one of solutions because zenith angle of beam in an array antenna has no dependency on operating frequency by the same path and power to each element in the feeding circuit [23,24]. A LCP-based corporate-feed microstrip array antenna for the lower E-band (71-76 GHz) is investigated as shown in Fig.…”

Section: Corporate Feed Microstrip Array Antennamentioning

confidence: 99%

Development of millimeter-wave devices based on liquid crystal polymer (LCP) substrate

Hosono

Uemichi

Hasegawa

et al. 2017

IEICE Electron. Express

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Millimeter-wave (mm-Wave) technology is a promising solution to meet ever-increasing demand in wireless data transmission capacity thanks to the availability of large bandwidths at mm-Wave frequencies, where the choice of dielectric materials is one of important issues because the high water absorption at mm-Wave frequencies restricts remarkably the choice. Liquid crystal polymer (LCP) is one of materials available for mm-Wave applications and is able to provide cost-effective solution. In this paper, features of LCP will be introduced for applications at V-band (60 GHz) and E-band (70 GHz, 80 GHz) in terms of dielectric constant, feasible structure, process and reliability. Some LCP-based devices such as transmission line, mode transition between different transmission-lines, antenna and filter will be reviewed. It is demonstrated that LCP-based devices actually have shown good performance and LCP is especially suitable for consumer applications that require high reliability and cost-effectiveness.

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“…2.19. Besides, in [75] it is also demonstrated that the coupling is lower than −20 dB in case of one row of nails, lower than -37 dB using two rows of nails and -50 dB for three rows of nails in the desired frequency band (57)(58)(59)(60)(61)(62)(63)(64)(65)(66)(67)(68).…”

Section: Rgw Corporate-feed Networkmentioning

confidence: 95%

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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A 45$^{\circ}$ Linearly Polarized Hollow-Waveguide 16$\,\times$16-Slot Array Antenna Covering 71–86 GHz Band

Cited by 70 publications

References 17 publications

Design of Wideband Slot Array Antenna by Groove Gap Waveguide in Millimeter Waves

Design of Wideband Slot Array Antenna by Groove Gap Waveguide in Millimeter Waves

Development of millimeter-wave devices based on liquid crystal polymer (LCP) substrate

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

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