An X-band Portable 3D-printed Lens Antenna with Integrated Waveguide Feed for Microwave Imaging

Chudpooti, Nonchanutt; Praesomboon, Sukanya; Duangrit, Nattapong; Somjit, Nutapong; Akkaraekthalin, Prayoot

doi:10.1109/piers-spring46901.2019.9017614

Cited by 12 publications

(2 citation statements)

References 8 publications

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“…FFF is an additive manufacturing technique that involves the extrusion of a melted thermoplastic lament through a nozzle mounted on a moving mechanical system. Recent literature has emphasized the advantages of FFF for fabricating GRIN devices [9][10][11][12]; however, one drawback is the limited dielectric properties of commonly available thermoplastic laments. Most standard thermoplastics such as PLA, ABS and polycarbonate, have permittivity values less than 3.0 and thus are unsuitable for our MPMFE lens designs, thus necessitating alternative options, such as loaded polymers.…”

Section: Experimental Validation Lens Fabricationmentioning

confidence: 99%

Near Hemispherical Passive Beam Steering using 3D Modified Partial Maxwell Fisheye Lens

Fessaras,

Nicholson,

Mirotznik

2023

Preprint

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This study presents the design and fabrication of an ultra-wide-angle beam-steering graded dielectric lens using innovative principles and additive manufacturing techniques. The lens demonstrates remarkable performance with a boresight realized gain of 23 dBi and notable beam steering capabilities spanning from -80° to 80°, accompanied by a modest gain roll-off of less than 10 dB over a wide frequency range. The lens design is based on an optimized modification of the Partial Maxwell Fisheye (PMFE) lens, resulting in a fully manufacturable 3D dielectric lens. Additive manufacturing, specifically Fused Filament Fabrication (FFF), is employed to overcome challenges associated with fabricating the lens's complex geometry. Material constraints are addressed by utilizing a high dielectric filament to meet the design requirements. The design methodology incorporates a novel polar space-filling curve (PSFC) to achieve the desired gradient profile. Rigorous simulations and experimental verification confirm the effectiveness of the design, representing the first 3D implementation of a PMFE-type lens. This research demonstrates the feasibility and potential applications of an ultra-wide-angle passive beam-steering dielectric lens.

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Section: Experimental Validation Lens Fabricationmentioning

confidence: 99%

Near Hemispherical Passive Beam Steering using 3D Modified Partial Maxwell Fisheye Lens

Fessaras,

Nicholson,

Mirotznik

2023

Preprint

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“…The homogeneous lens antennas with electronic beam control were considered promising for millimetre-wave backhaul applications [4], [6]. Additive technology can be also used for the design and fabrication of homogeneous lens antennas [7], [8].…”

Section: Introductionmentioning

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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3D Rapid-Prototyped 21-31-GHz Hollow SIWs for Low-Cost 5G IoT and Robotic Applications

et al. 2021

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This article presents, for the first time, new design and fabrication techniques for Hollow Substrate Integrated Waveguides (HSIWs), demonstrated in the nominal frequency from 21 to 31 GHz, for use in wireless communication applications such as 5G, IoT and robotics. The design and fabrication techniques introduced in this paper feature: 1) the use of low-cost rapid prototyping additive manufacturing based on polymer jetting (PJ), and 2) the use of commercially available through-substrate copper via transitions. In contrast to the conventional SIW designs and fabrications, this new approach does not rely on through-substrate via fabrication, hence avoiding some difficult manufacturing steps, such as through-substrate etching, via formation and via metallization, which are considered complex and expensive to implement. The 3D printed HSIWs in this article can achieve a propagation loss of lower than 1.56 Np/m (13.55 dB/m), which is considered one of the results with the lowest propagation loss achieved to date, when compared to the state-of-the-art.

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An X-band Portable 3D-printed Lens Antenna with Integrated Waveguide Feed for Microwave Imaging

Cited by 12 publications

References 8 publications

Near Hemispherical Passive Beam Steering using 3D Modified Partial Maxwell Fisheye Lens

Near Hemispherical Passive Beam Steering using 3D Modified Partial Maxwell Fisheye Lens

A Review of 3D Printed Gradient Refractive Index Lens Antennas

3D Rapid-Prototyped 21-31-GHz Hollow SIWs for Low-Cost 5G IoT and Robotic Applications

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