3-D-Printed Dielectric Metasurfaces for Antenna Gain Improvement in the Ka-Band

Pepino, Vinicius M.; Mota, Achiles F. da; Martins, Augusto; Borges, Ben‐Hur V.

doi:10.1109/lawp.2018.2860521

Cited by 32 publications

(20 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When the size of the individual particle is comparable to the wavelength inside the dielectric, the particle itself exhibits both an electric and a magnetic induced dipole moment, whose spectral position and intensity can be engineered by acting on the particle shape and separation. All-dielectric metasurfaces are particularly popular at infrared and optical frequencies [13]- [22], where Ohmic losses of metals are significant, but they also enable important applications in the microwave range [26]- [27]. For example, water-based metasurfaces [30]- [31] have been the subject of extensive study in the past years because of their wide tunability characteristics.…”

Section: Introductionmentioning

confidence: 99%

Surface Impedance Modeling of All-Dielectric Metasurfaces

Monti

Alù

Toscano

et al. 2020

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

We develop a simple and reliable analytical model that allows describing the electromagnetic response of alldielectric metasurfaces consisting of a single layer array of highpermittivity spherical particles. By combining Mie theory with a bi-dimensional homogenization approach, we derive closed-form expressions of the electric and magnetic surface impedances exhibited by the metasurface and, thus, its reflection and transmission coefficients. The effectiveness of the proposed approach is validated through a set of full-wave simulations. The availability of the analytical model here developed allows a more in-depth understanding of the complex scattering response of these electromagnetic structures and enables the design of innovative devices operating throughout the whole electromagnetic spectrum, including, for example, unconventional reflectors for antennas, broadband optical mirrors, and highly efficient nanoantenna reflectarrays.

show abstract

Section: Introductionmentioning

confidence: 99%

Surface Impedance Modeling of All-Dielectric Metasurfaces

Monti

Alù

Toscano

et al. 2020

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…A dual beam bowtie antenna employing a metamaterial has presented in Jiang et al [Jiang, Si, Hu et al (2019)], to achieve the enhancement in gain of an antenna. Similarly, a metamaterial based antenna operating in the ka-band has reported in Pepino et al [Pepino, Mota, Martins et al (2018)], to improve the antenna's gain. In this paper, a 5G antenna is proposed and its performance is analyzed using EBG surfaces (mushroom, slotted) and the significance of the EBG surfaces is clearly observed.…”

Section: Introductionmentioning

confidence: 94%

Design and Performance Comparison of Rotated Y-Shaped Antenna Using Different Metamaterial Surfaces for 5G Mobile Devices

Khan¹,

Sehrai²,

Khan³

et al. 2019

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

In this paper, a rotated Y-shaped antenna is designed and compared in terms of performance using a conventional and EBG ground planes for future Fifth Generation (5G) cellular communication system. The rotated Y-shaped antenna is designed to transmit at 38 GHz which is one of the most prominent candidate bands for future 5G communication systems. In the design of conventional antenna and metamaterial surfaces (mushroom, slotted), Rogers-5880 substrate having relative permittivity, thickness and loss tangent of 2.2, 0.254 mm, and 0.0009 respectively have been used. The conventional rotated Y-shaped antenna offers a satisfactory wider bandwidth (0.87 GHz) at 38.06 GHz frequency band, which gets further improved using the EBG surfaces (mushroom, slotted) as a ground plane by 1.23 GHz and 0.97 GHz respectively. Similarly, the conventional 5G antenna radiates efficiently with an efficiency of 88% and is increased by using the EBG surfaces (slotted, mushroom-like) to 90% and 94% respectively at the desired resonant frequency band. The conventional antenna yields a bore side gain of 6.59 dB which is further enhanced up to 8.91dB and 7.50 dB by using mushroom-like and slotted EBG surfaces respectively as a ground plane. The proposed rotated Y-shaped antenna and EBG surfaces (mushroom, slotted) are analyzed using the Finite Integration Technique (FIT) employed in Computer Simulation Technology (CST) software. The designed antenna is applicable for future 5G applications.

show abstract

“…They are composed of a series of subwavelength elements that can be 3D printed by metal or thermoplastic, milled and cutted [8,9], making their fabrication relatively simple and inexpensive. Metasurfaces have numerous applications, such as flat-focusing lenses [7,10], frequency-selective filters [11], reflectors [12], polarizers [13], and broadband absorbers [14].…”

Section: Introductionmentioning

confidence: 99%

A Low-Cost Instrument for Multidimensional Characterization of Advanced Wireless Communication Technologies

Gounella¹,

Martins²,

Pepino³

et al. 2023

Preprint

View full text Add to dashboard Cite

3D printing is commonly used to create complex objects at a low cost. It has also been applied in the fabrication of metamaterials and metasurfaces, which alter the propagation path of electromagnetic waves. These structures have diverse applications, including enhancing beam direction, improving antenna gain and signal-to-noise ratio, and creating filters and reflectors. Metasurfaces are cheap to fabricate and their use is expected to boost antenna efficiency in 5G telecommunications and beyond. However, accurately characterizing their profile remains a significant challenge. This paper presents a low-cost fully automated 4-axis instrument for microwave metasurface charac-terization, overcoming limitations of manual methods and offering an efficient and accurate approach. This research represents a significant advancement in microwave metasurface characterization, enabling sophisticated techniques to advance wireless communication technolo-gies, as it is the case of the future 5G and millimeter-wave communication systems. The equipment has an approximate cost of $1550 USD and was able to characterize a metalens with a focal distance of 20 cm designed for signals at 30 GHz. It was possible to create 2D and 3D profiles of the intensity distribution focused by the metalens and extract parameters such as the gain (8.05 dB), 3dB depth of focus (11 cm) and full width at half maximum (2.17 cm). The comparison of the measurements with the diffraction calculations of the metalens showed a very good agreement between the in-tensity distributions and the parameters of the metalens.

show abstract

3-D-Printed Dielectric Metasurfaces for Antenna Gain Improvement in the Ka-Band

Cited by 32 publications

References 16 publications

Surface Impedance Modeling of All-Dielectric Metasurfaces

Surface Impedance Modeling of All-Dielectric Metasurfaces

Design and Performance Comparison of Rotated Y-Shaped Antenna Using Different Metamaterial Surfaces for 5G Mobile Devices

A Low-Cost Instrument for Multidimensional Characterization of Advanced Wireless Communication Technologies

Contact Info

Product

Resources

About