Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/117876
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Type: | Journal article |
Title: | Terahertz multi-beam antenna using photonic crystal waveguide and Luneburg lens |
Author: | Headland, D. Withayachumnankul, W. Yamada, R. Fujita, M. Nagatsuma, T. |
Citation: | APL Photonics, 2018; 3(12):126105-1-126105-18 |
Publisher: | AIP Publishing; American Institute of Physics |
Issue Date: | 2018 |
ISSN: | 2378-0967 2378-0967 |
Statement of Responsibility: | Daniel Headland, Withawat Withayachumnankul, Ryoumei Yamada, Masayuki Fujita and Tadao Nagatsuma |
Abstract: | Recent years have seen the emergence of efficient, general-purpose terahertz photonic-crystal waveguides etched from high-resistivity silicon. Systems founded upon this platform will require antennas in order to interface with free-space fields. Multi-beam antennas are desirable to this end, as they are capable of interacting with a number of distinct directions simultaneously. Such functionality can be provided by Luneburg lenses, which we aim to incorporate with the terahertz photonic crystal waveguide. A Luneburg lens requires a precisely defined gradient-index, which we realize using effective medium techniques that are implemented with micro-scale etching of silicon. Thus, the photonic crystal waveguides can be integrated directly with the Luneburg lens and fabricated together from the same silicon wafer. In this way, we develop a planar Luneburg-lens antenna with a diameter of 17 mm and seven evenly spaced ports that cover a 120° field of view. Numerical and experimental characterization confirm that the antenna functions as intended over its operation bandwidth, which spans from 320 to 390 GHz. The Luneburg-lens antenna is subsequently deployed in a demonstration of terahertz communications over a short distance. The device may therefore find applications in terahertz communications, where multiple point-to-point links can be sustained by a given transceiver node. This form of terahertz beam control may also be useful for short-range radar that monitors several directions simultaneously. |
Rights: | © 2018 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
DOI: | 10.1063/1.5060631 |
Grant ID: | http://purl.org/au-research/grants/arc/DP170101922 http://purl.org/au-research/grants/arc/DP180103561 |
Published version: | http://dx.doi.org/10.1063/1.5060631 |
Appears in Collections: | Aurora harvest 3 Electrical and Electronic Engineering publications |
Files in This Item:
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hdl_117876.pdf | Published Version | 7.73 MB | Adobe PDF | View/Open |
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