Double-layer geodesic and gradient-index lenses.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
29 Apr 2022
29 Apr 2022
Historique:
received:
02
05
2021
accepted:
22
03
2022
entrez:
29
4
2022
pubmed:
30
4
2022
medline:
30
4
2022
Statut:
epublish
Résumé
A double-layer lens consists of a first gradient-index/geodesic profile in an upper waveguide, partially surrounded by a mirror that reflects the wave into a lower guide where there is a second profile. Here, we derive a new family of rotational-symmetric inhomogeneous index profiles and equivalent geodesic lens shapes by solving an inverse problem of pre-specified focal points. We find an equivalence where single-layer lenses have a different functionality as double-layer lenses with the same profiles. As an example, we propose, manufacture, and experimentally validate a practical implementation of a geodesic double-layer lens that is engineered for a low-profile antenna with a compact footprint in the millimeter wave band. Its unique double-layer configuration allows for two-dimensional beam scanning using the same footprint as an extension of the presented design. These lenses may find applications in future wireless communication systems and sensing instruments in microwave, sub-terahertz, and optical domains.
Identifiants
pubmed: 35487907
doi: 10.1038/s41467-022-29587-9
pii: 10.1038/s41467-022-29587-9
pmc: PMC9054803
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2354Informations de copyright
© 2022. The Author(s).
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