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Coherent beam control with an all-dielectric transformation optics based lens
Transformation optics (TO) concept well known for its huge possibility in patterning the path of electromagnetic waves is exploited to design a beam steering lens. The broadband directive in-phase emission in a desired off-normal direction from an array of equally fed radiators is numerically and ex...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4700435/ https://www.ncbi.nlm.nih.gov/pubmed/26729400 http://dx.doi.org/10.1038/srep18819 |
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author | YI, Jianjia Burokur, Shah Nawaz Piau, Gérard-Pascal de Lustrac, André |
author_facet | YI, Jianjia Burokur, Shah Nawaz Piau, Gérard-Pascal de Lustrac, André |
author_sort | YI, Jianjia |
collection | PubMed |
description | Transformation optics (TO) concept well known for its huge possibility in patterning the path of electromagnetic waves is exploited to design a beam steering lens. The broadband directive in-phase emission in a desired off-normal direction from an array of equally fed radiators is numerically and experimentally reported. Such manipulation is achieved without the use of complex and bulky phase shifters as it is the case in classical phased array antennas. The all-dielectric compact low-cost lens prototype presenting a graded permittivity profile is fabricated through three-dimensional (3D) polyjet printing technology. The array of radiators is composed of four planar microstrip antennas realized using standard lithography techniques and is used as excitation source for the lens. To validate the proposed lens, we experimentally demonstrate the broadband focusing properties and in-phase directive emissions deflected from the normal direction. Both the far-field radiation patterns and the near-field distributions are measured and reported. Measurements agree quantitatively and qualitatively with numerical full-wave simulations and confirm the corresponding steering properties. Such experimental validation paves the way to inexpensive easy-made all-dielectric microwave lenses for beam forming and collimation. |
format | Online Article Text |
id | pubmed-4700435 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47004352016-01-13 Coherent beam control with an all-dielectric transformation optics based lens YI, Jianjia Burokur, Shah Nawaz Piau, Gérard-Pascal de Lustrac, André Sci Rep Article Transformation optics (TO) concept well known for its huge possibility in patterning the path of electromagnetic waves is exploited to design a beam steering lens. The broadband directive in-phase emission in a desired off-normal direction from an array of equally fed radiators is numerically and experimentally reported. Such manipulation is achieved without the use of complex and bulky phase shifters as it is the case in classical phased array antennas. The all-dielectric compact low-cost lens prototype presenting a graded permittivity profile is fabricated through three-dimensional (3D) polyjet printing technology. The array of radiators is composed of four planar microstrip antennas realized using standard lithography techniques and is used as excitation source for the lens. To validate the proposed lens, we experimentally demonstrate the broadband focusing properties and in-phase directive emissions deflected from the normal direction. Both the far-field radiation patterns and the near-field distributions are measured and reported. Measurements agree quantitatively and qualitatively with numerical full-wave simulations and confirm the corresponding steering properties. Such experimental validation paves the way to inexpensive easy-made all-dielectric microwave lenses for beam forming and collimation. Nature Publishing Group 2016-01-05 /pmc/articles/PMC4700435/ /pubmed/26729400 http://dx.doi.org/10.1038/srep18819 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article YI, Jianjia Burokur, Shah Nawaz Piau, Gérard-Pascal de Lustrac, André Coherent beam control with an all-dielectric transformation optics based lens |
title | Coherent beam control with an all-dielectric transformation optics based lens |
title_full | Coherent beam control with an all-dielectric transformation optics based lens |
title_fullStr | Coherent beam control with an all-dielectric transformation optics based lens |
title_full_unstemmed | Coherent beam control with an all-dielectric transformation optics based lens |
title_short | Coherent beam control with an all-dielectric transformation optics based lens |
title_sort | coherent beam control with an all-dielectric transformation optics based lens |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4700435/ https://www.ncbi.nlm.nih.gov/pubmed/26729400 http://dx.doi.org/10.1038/srep18819 |
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