Design of a 3D Printed Gradient Index Lens Using High Permittivity Ceramic

Oh, Yongduk; Bharambe, Vivek T.; Adams, Jack A.; Negro, Dylan; MacDonald, Eric

doi:10.1109/ieeeconf35879.2020.9330193

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…The use of GRIN structures is not limited to lens antennas in the traditional realization. In [93], the GRIN structure was integrated into the horn antenna (Fig. 29).…”

Section: Jetting Modeling For Grin Lens Designmentioning

confidence: 99%

A Review of 3D Printed Gradient Refractive Index Lens Antennas

et al. 2023

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Gradient index lens antennas find their application in modern wireless communication including radar systems, satellite communication, etc. They can ensure highly directional beamforming, support multibeam operations and beam steering capabilities within a wide angle of view. The development of 3D printing technologies enables the implementation of complex gradient refractive index distribution with high accuracy as well as obtaining a significant reduction in the production time and cost. This paper presents the state of the art in gradient refractive index lens antenna design using different types of additive manufacturing processes. It shows the applicability of 3D printing to a wide range of operational frequency bands from microwave to sub-THz and THz.INDEX TERMS Additive manufacturing, antennas, 3D printing, radio frequency applications, dielectric lens, gradient refractive index lens, lens antennas.

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“…The use of GRIN structures is not limited to lens antennas in the traditional realization. In [93], the GRIN structure was integrated into the horn antenna (Fig. 29).…”

Section: Jetting Modeling For Grin Lens Designmentioning

confidence: 99%

A Review of 3D Printed Gradient Refractive Index Lens Antennas

et al. 2023

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“…The designed flattened QCTO Luneburg lens must be discretized into unit cells which can be fabricated by the ceramic 3D printing process applied for this study [25]- [26]. These unit cell types should be ideally isotropic and easily manufacturable, such as crosses [59] and cubes with rods [60]- [61] suitable for 3D objects, or square hole blocks [62] and cylindrical hole blocks [63] applicable for 2D objects.…”

Section: A Lens Models Involving Fabrication Limitsmentioning

confidence: 99%

Wide-Angle Ceramic Retroreflective Luneburg Lens Based on Quasi-Conformal Transformation Optics for Mm-Wave Indoor Localization

et al. 2022

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This paper presents a quasi-conformal transformation optics (QCTO) based three-dimensional (3D) retroreflective flattened Luneburg lens for wide-angle millimeter-wave radio-frequency indoor localization. The maximum detection angle and radar cross-section (RCS) are investigated, including an impedance matching layer (IML) between the lens antenna and the free-space environment. The 3D QCTO Luneburg lenses are fabricated in alumina by lithography-based ceramic manufacturing, a 3D printing process. The manufactured structures have a diameter of 29.9 mm (4 𝜆 0 ), showing a maximum realized gain of 16.51 dBi and beam steering angle of ±70° at 40 GHz. The proposed QCTO Luneburg lens with a metallic reflective layer achieves a maximum RCS of -20.05 dBsqm at 40 GHz with a wide-angle response over ±37°, while the structure with an IML between the lens and air improves these values to a maximum RCS of -15.78 dBsqm and operating angular response between ±50°.

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Unit cell estimation of volumetrically-varying permittivity in additively-manufactured ceramic lattices with X-ray computed tomography

Burden

Mummareddy

et al. 2021

Materials & Design

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Design of a 3D Printed Gradient Index Lens Using High Permittivity Ceramic

Cited by 8 publications

References 7 publications

A Review of 3D Printed Gradient Refractive Index Lens Antennas

A Review of 3D Printed Gradient Refractive Index Lens Antennas

Wide-Angle Ceramic Retroreflective Luneburg Lens Based on Quasi-Conformal Transformation Optics for Mm-Wave Indoor Localization

Unit cell estimation of volumetrically-varying permittivity in additively-manufactured ceramic lattices with X-ray computed tomography

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