A 3D-Printed Subterahertz Metallic Surface-Wave Luneburg Lens Multibeam Antenna

Boyu Nie; Hongda Lu; Talal Skaik; Yong Liu; Yi Wang

doi:10.1109/TTHZ.2023.3242227

A 3D-Printed Subterahertz Metallic Surface-Wave Luneburg Lens Multibeam Antenna

Boyu Nie, Hongda Lu^*, Talal Skaik, Yong Liu, Yi Wang

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

This letter presents an experimental realization of a subterahertz metallic gradient index (GRIN) lens multibeam antenna operating at 355 GHz. The antenna is composed of a surface-wave Luneburg lens based on a bed of nails and a feeder array of nine WR-2.2 waveguides. The lens and the feeding structures are fabricated by the same high-precision 3D printing technique and are metalized using magnetron-sputtering gold coating. The antenna has been measured, showing good reflection coefficients below -12.5 dB at all ports and multiple independent beams covering a range of ±60°, which agree very well with the simulation. The measured gains are above 16 dBi and the scan loss is below 1.2 dB. This work demonstrates a novel manufacture and implementation approach for metallic multibeam lens antennas at subterahertz frequencies.

Original language	English
Pages (from-to)	297-301
Number of pages	5
Journal	IEEE Transactions on Terahertz Science and Technology
Volume	13
Issue number	3
DOIs	https://doi.org/10.1109/TTHZ.2023.3242227
Publication status	Published - 1 May 2023

Keywords

3D printing
magnetron sputtering
metallic gradient index (GRIN) lens antenna
subterahertz multibeam antenna
surface-wave luneburg lens

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10.1109/TTHZ.2023.3242227

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title = "A 3D-Printed Subterahertz Metallic Surface-Wave Luneburg Lens Multibeam Antenna",

abstract = "This letter presents an experimental realization of a subterahertz metallic gradient index (GRIN) lens multibeam antenna operating at 355 GHz. The antenna is composed of a surface-wave Luneburg lens based on a bed of nails and a feeder array of nine WR-2.2 waveguides. The lens and the feeding structures are fabricated by the same high-precision 3D printing technique and are metalized using magnetron-sputtering gold coating. The antenna has been measured, showing good reflection coefficients below -12.5 dB at all ports and multiple independent beams covering a range of ±60°, which agree very well with the simulation. The measured gains are above 16 dBi and the scan loss is below 1.2 dB. This work demonstrates a novel manufacture and implementation approach for metallic multibeam lens antennas at subterahertz frequencies.",

keywords = "3D printing, magnetron sputtering, metallic gradient index (GRIN) lens antenna, subterahertz multibeam antenna, surface-wave luneburg lens",

author = "Boyu Nie and Hongda Lu and Talal Skaik and Yong Liu and Yi Wang",

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AU - Nie, Boyu

AU - Lu, Hongda

AU - Skaik, Talal

AU - Liu, Yong

AU - Wang, Yi

PY - 2023/5/1

Y1 - 2023/5/1

N2 - This letter presents an experimental realization of a subterahertz metallic gradient index (GRIN) lens multibeam antenna operating at 355 GHz. The antenna is composed of a surface-wave Luneburg lens based on a bed of nails and a feeder array of nine WR-2.2 waveguides. The lens and the feeding structures are fabricated by the same high-precision 3D printing technique and are metalized using magnetron-sputtering gold coating. The antenna has been measured, showing good reflection coefficients below -12.5 dB at all ports and multiple independent beams covering a range of ±60°, which agree very well with the simulation. The measured gains are above 16 dBi and the scan loss is below 1.2 dB. This work demonstrates a novel manufacture and implementation approach for metallic multibeam lens antennas at subterahertz frequencies.

AB - This letter presents an experimental realization of a subterahertz metallic gradient index (GRIN) lens multibeam antenna operating at 355 GHz. The antenna is composed of a surface-wave Luneburg lens based on a bed of nails and a feeder array of nine WR-2.2 waveguides. The lens and the feeding structures are fabricated by the same high-precision 3D printing technique and are metalized using magnetron-sputtering gold coating. The antenna has been measured, showing good reflection coefficients below -12.5 dB at all ports and multiple independent beams covering a range of ±60°, which agree very well with the simulation. The measured gains are above 16 dBi and the scan loss is below 1.2 dB. This work demonstrates a novel manufacture and implementation approach for metallic multibeam lens antennas at subterahertz frequencies.

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KW - magnetron sputtering

KW - metallic gradient index (GRIN) lens antenna

KW - subterahertz multibeam antenna

KW - surface-wave luneburg lens

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A 3D-Printed Subterahertz Metallic Surface-Wave Luneburg Lens Multibeam Antenna

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