IET 3D Printed Lens_revision_ravi.pdf (929.89 kB)
3D-printed planar graded index lenses
journal contribution
posted on 2016-09-23, 11:03 authored by Shiyu Zhang, Ravi Arya, Shaileshchandra Pandey, J. C. Vardaxoglou, William WhittowWilliam Whittow, Raj MittraThe authors introduce two flat graded‐index (GRIN) lens designs in this study. First of these is a thick lens, which was designed and fabricated by using the three‐dimensional (3D)‐printing technique. Second, a thin dial‐a‐dielectric (DaD) lens, which uses state‐of‐the‐art artificially engineered dielectric materials for design and for which they present only the simulated results, with plans to fabricate it in the future. Both designs overcome the difficulties faced in finding desired commercial off‐the‐shelf materials, either for 3D‐printing or for fabricating conventional GRIN lenses. The lenses comprise of several concentric dielectric rings with bespoke relative permittivities for transforming spherical waves into plane waves and vice versa. The 3D‐printed thick flat lens is low‐cost and light‐weight, but provides broadband and high gain performance. Measurement results show that the realised gain of the thick lens is 9–11 dB over the frequency band of 12–18 GHz. The designed DaD lens has the desirable characteristics of low loss, low reflection and broadband properties.
Funding
This work was supported in part by EPSRC Doctoral Prize Research Fellowship.
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School
- Mechanical, Electrical and Manufacturing Engineering
Published in
IET Microwaves, Antennas & PropagationVolume
10Issue
13Pages
1411 - 1419Citation
ZHANG, S. ... et al., 2016. 3D-printed planar graded index lenses. IET Microwaves, Antennas & Propagation, 10 (13), pp.1411–1419Publisher
IET (© the authors)Version
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 3.0 International (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/Acceptance date
2016-08-30Publication date
2016-10-01Notes
This is the colour version of the article. The final (black and white)version of the article was published as an open access article by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)ISSN
1751-8725eISSN
1751-8733Publisher version
Language
- en
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Keywords
lensespermittivitydielectric materialsfrequency 12 GHz to 18 GHzgain 9 dB to 11 dBbroadband properties3D‐printed thick flat lensplane wavesspherical wavesbespoke relative permittivitiesconcentric dielectric ringsartificially engineered dielectric materialsDaD lensthin dial‐a‐dielectric lensGRIN lens designstwo flat graded‐indexthree‐dimensional printed planar graded index lensMechanical Engineering not elsewhere classified
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