A 3D-printed sub-terahertz metallic surface-wave Luneburg lens multi-beam antenna

Boyu Nie; Hongda Lu; Talal Skaik; Yi Wang

doi:10.1109/TTHZ.2023.3242227

A 3D-printed sub-terahertz metallic surface-wave Luneburg lens multi-beam antenna

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

^*Corresponding author for this work

Electronic, Electrical and Systems Engineering

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

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Abstract

This letter presents an experimental realization of a sub-terahertz metallic gradient index (GRIN) lens multi-beam 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 multi-beam lens antennas at sub-terahertz frequencies.

Original language	English
Article number	10036101
Pages (from-to)	1-6
Number of pages	6
Journal	IEEE Transactions on Terahertz Science and Technology
DOIs	https://doi.org/10.1109/TTHZ.2023.3242227
Publication status	Published - 3 Feb 2023

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10.1109/TTHZ.2023.3242227

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B. Nie, H. Lu, T. Skaik, Y. Liu and Y. Wang, "A 3D-Printed Sub-terahertz Metallic Surface-wave Luneburg Lens Multi-beam Antenna," in IEEE Transactions on Terahertz Science and Technology, doi: 10.1109/TTHZ.2023.3242227. © 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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abstract = "This letter presents an experimental realization of a sub-terahertz metallic gradient index (GRIN) lens multi-beam 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 multi-beam lens antennas at sub-terahertz frequencies.",

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PY - 2023/2/3

Y1 - 2023/2/3

N2 - This letter presents an experimental realization of a sub-terahertz metallic gradient index (GRIN) lens multi-beam 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 multi-beam lens antennas at sub-terahertz frequencies.

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A 3D-printed sub-terahertz metallic surface-wave Luneburg lens multi-beam antenna

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