Lens Antennas for 5G Communications Systems

Quevedo–Teruel, Oscar; Ebrahimpouri, Mahsa; Ghasemifard, Fatemeh

doi:10.1109/mcom.2018.1700977

Cited by 122 publications

(55 citation statements)

References 11 publications

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“…Glide symmetries were successfully used to reduce the dispersion of periodic structures [15][16][17][18], to increase the equivalent refractive index [19][20][21][22], or to increase the band and attenuation of electromagnetic bandgaps [10,[23][24][25]. For example, glide symmetry was proposed to produce lens antennas for fifth-generation (5G) communications [26,27], taking advantage of their ability to generate a higher refractive index, less dispersion, and more isotropy [9]. Preceding this work, all glide-symmetric structures proposed in the literature for parallel plate configurations have a horizontal plane of symmetry, perpendicular to the direction of propagation [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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Section: Introductionmentioning

confidence: 99%

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

2019

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“…Twist symmetries find applications in fully metallic phase shifters and filters. Moreover, the reduced frequency dispersion may be employed in leaky-wave antennas with reduced beam-squint, appropriate for future millimeter wave communication networks and space applications [30]. Fig.…”

Section: Discussionmentioning

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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“…MFBAs are mainly based on reflectors [8], lenses [9] or beamforming circuits (transmission lines, directional couplers etc.) [10].…”

Section: Introductionmentioning

confidence: 99%

Active Multiport Subarrays for 5G Communications

Aslan

Puskely

Rœderer

et al. 2019

2019 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)

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A novel hybrid beamforming architecture based on a phased array of active multiport subarrays is proposed for multi-user 5G applications. The subarrays have multiple simultaneous fixed beams which are smartly combined at the user locations with relatively large gains towards the intended co-frequency users and sufficiently low inter-user interference levels. The presented architecture has a wider angular coverage than the existing subarray-based hybrid beamforming schemes and reduces the signal processing complexity significantly as compared to the fully digital beamforming.Index Terms-Butler matrix, fifth generation (5G), hybrid beamforming, multi-beam antenna, multi-user communication, space division multiplexing.

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Lens Antennas for 5G Communications Systems

Cited by 122 publications

References 11 publications

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

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

Propagation characteristics of periodic structures possessing twist and polar glide symmetries

Active Multiport Subarrays for 5G Communications

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