3D-printed dielectric GRIN planar wideband lens antenna for 5G applications

Poyanco, José-Manuel; Pizarro, Francisco; Rajo‐Iglesias, Eva

doi:10.23919/eucap51087.2021.9411342

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…Another option for manufacturing a 3D profiled structure is its printing on a 3D printer 12 . This method can be used to produce, for example, a broadband lens with a flat gradient index (GRIN), Fig.…”

Section: Analysis Of Known Approaches To the Practical Implementation...mentioning

confidence: 99%

On the problem of forming a 3D refractive index profile in a fiber and compatible components and possible solutions

Vinogradova,

Meshkov,

Gizatulin

et al. 2023

Optical Technologies for Telecommunications 2022

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The article is devoted to the study of issues related to the developments of methods for manufacturing 3D refractive index profiled fiber and fiber-compatible structures. Based on the results of the analysis of published works, it was established that there are no tested approaches with generality to solving this problem. Therefore, the method proposed by the authors seems relevant, which can be classified as a technique for bulk transformation of material properties, which makes it possible to approximately select, and then adjust (with refinement) the volumetric refractive index profile of the selected area to the simulated value. In this article, the authors present the results of the formation of a guiding structure along the boundary of a profiled area. The method of three-beam UV burning and the method of focused ion burning were studied. It has been found that in the second case, significant differences in the refractive index can be obtained. Therefore, the second method may be of interest for the manufacture of large-sized components.

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Section: Analysis Of Known Approaches To the Practical Implementation...mentioning

confidence: 99%

On the problem of forming a 3D refractive index profile in a fiber and compatible components and possible solutions

Vinogradova,

Meshkov,

Gizatulin

et al. 2023

Optical Technologies for Telecommunications 2022

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“…During the last decade, numerous studies have appeared in the literature that have qualified 3D printing as a promising technology for realizing complex 3D metamaterial structures. Starting from the characterization of the permittivity and losses for various fused filament materials [3], [4] to the realization of 3D printed structures for new antenna concepts [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15]. These structures range from dielectric domes [5], Modulated Dielectric Metasurfaces [6], CP polarizers [7], reflectarrays [8], [9], Risley prisms for 2D beam steering [10] and flat cylindrical [11], [12], [13], [14] and 3D GRIN lenses [15].…”

Section: Introductionmentioning

confidence: 99%

“…Starting from the characterization of the permittivity and losses for various fused filament materials [3], [4] to the realization of 3D printed structures for new antenna concepts [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15]. These structures range from dielectric domes [5], Modulated Dielectric Metasurfaces [6], CP polarizers [7], reflectarrays [8], [9], Risley prisms for 2D beam steering [10] and flat cylindrical [11], [12], [13], [14] and 3D GRIN lenses [15]. The principle of operation of the proposed GRIN lenses [11], [12], [13], [14] is to transform a spherical wave into a plane wave to produce highly directive beams.…”

Section: Introductionmentioning

confidence: 99%

“…These structures range from dielectric domes [5], Modulated Dielectric Metasurfaces [6], CP polarizers [7], reflectarrays [8], [9], Risley prisms for 2D beam steering [10] and flat cylindrical [11], [12], [13], [14] and 3D GRIN lenses [15]. The principle of operation of the proposed GRIN lenses [11], [12], [13], [14] is to transform a spherical wave into a plane wave to produce highly directive beams. Resorting to the Geometrical Optics (GO) approximation, having a plane wave at the lens output correspond to parallel rays at the lens output, namely to collimated ray-paths.…”

Section: Introductionmentioning

confidence: 99%

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3-D Printed All-Dielectric GRIN Lens Antenna With an Integrated Feeder

Paraskevopoulos

Maggiorelli

Gashi

et al. 2023

IEEE Open J. Antennas Propag.

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In this paper we present the design, fabrication, and experimental verification of a new type of Graded-index (GRIN) lens antenna with an integrated feeder. The continuously varying refractive index distribution is chosen appropriately to offer the rays collimation at the lens aperture. It is practically implemented by varying the material density in a host medium, thus realizing a new type of all-dielectric high gain antenna, entirely using 3D printing. This solution can find application to high gain wireless communication and measurement systems. This GRIN lens antenna is printed in one monolithic process and does not require the feeder to be placed at a focal distance, thus complying with more strict space requirements. It accepts interchangeable feeds that can cover a wide frequency range. The directivity and gain are evaluated using near-field measurements in the Ku-band. A 40% measured aperture efficiency is achieved at 14GHz. The challenges and performance limitations that come with 3D printing, as compared to the design of idealized continuous distribution GRIN lenses are discussed.INDEX TERMS 3D printed antennas, dielectric lenses, inhomogeneous lenses.

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“…In these cases, dielectric-based metasurfaces could lead to designs that are less lossy, more broadband and easier to fabricate. In particular, the fabrication of dielectric metasurfaces is greatly facilitated by the advancements of 3-D printing technology, as 3-D printing materials with relatively low losses (e.g., Acrylonitrile Butadiene Styrene -ABS) can be easily printed in arbitrary shapes at a low cost [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Design of Modulated Dielectric Metasurfaces for Antenna Beamforming

Ataloglou

Eleftheriades

2022

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)

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This paper presents an end-to-end design method for the synthesis of dielectric metasurfaces with modulated thickness that are able to realize desired radiation patterns in the far-field with high precision. The method relies on integral equations and the Method of Moments to calculate the induced surface and volumetric current densities throughout the metasurface upon a given incident illumination. By avoiding homogenization of the dielectric layer and calculating directly the scattered fields through the Method of Moments, the near-field and far-field response of the metasurface can be accurately predicted and optimized. In particular, a design example of a modulated dielectric metasurface, fed by a single embedded line source, is presented for the realization of a Chebyshev array pattern with −20 dB sidelobe level. Moreover, an externally-fed dielectric metasurface performing beam splitting of a normally-incident plane wave is designed, 3-D printed and measured, showing two reflected beams at ±30 • , high suppression of specular reflections (> 14 dB) and satisfactory agreement with the simulated and desired radiation patterns. The proposed design method for beamforming with dielectric metasurfaces can find application in higher frequencies where the use of copper may be problematic due to higher ohmic losses and fabrication challenges.

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3D-printed dielectric GRIN planar wideband lens antenna for 5G applications

Cited by 8 publications

References 15 publications

On the problem of forming a 3D refractive index profile in a fiber and compatible components and possible solutions

On the problem of forming a 3D refractive index profile in a fiber and compatible components and possible solutions

3-D Printed All-Dielectric GRIN Lens Antenna With an Integrated Feeder

Design of Modulated Dielectric Metasurfaces for Antenna Beamforming

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