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@inproceedings{2368729, author = {Chen, Qiao and Horsley, Simon A R and Fonseca, Nelson J G and Tyc, Tomáš and QuevedoandTeruel, Oscar}, address = {NEW YORK}, booktitle = {2023 17th European Conference on Antennas and Propagation (EuCAP)}, doi = {http://dx.doi.org/10.23919/EuCAP57121.2023.10133223}, keywords = {Double-layer lens; geodesic lens; gradient index; fully metallic; PPW; lens antennas; metasurfaces; millimeter waves; sub-THz}, howpublished = {tištěná verze "print"}, language = {eng}, location = {NEW YORK}, isbn = {978-1-6654-7541-9}, pages = {1-5}, publisher = {IEEE}, title = {A General Solution for Double-Layer Gradient-Index and Geodesic Lenses with Rotational Symmetry}, url = {https://ieeexplore.ieee.org/document/10133223}, year = {2023} }
TY - JOUR ID - 2368729 AU - Chen, Qiao - Horsley, Simon A R - Fonseca, Nelson J G - Tyc, Tomáš - Quevedo-Teruel, Oscar PY - 2023 TI - A General Solution for Double-Layer Gradient-Index and Geodesic Lenses with Rotational Symmetry PB - IEEE CY - NEW YORK SN - 9781665475419 KW - Double-layer lens KW - geodesic lens KW - gradient index KW - fully metallic KW - PPW KW - lens antennas KW - metasurfaces KW - millimeter waves KW - sub-THz UR - https://ieeexplore.ieee.org/document/10133223 N2 - A double-layer lens consists of a pair of rotationally symmetric index profiles or geodesic lens shapes connected by a reflecting mirror partially covering their common periphery. Such a lens can provide a focus in each layer, and a wave travelling between the foci explores both layers. Here, we concentrate on the case with one layer being homogeneous or flat, and derive a general solution for the lens profiles by solving a Luneburg-like inverse problem with pre-specified foci inside or outside the lens, and different background indices in two layers. We demonstrate four examples of interest in ray-tracing plots. These lenses may find application in communications, sensing, and imaging from millimeter waves up to the optical bands. ER -
CHEN, Qiao, Simon A R HORSLEY, Nelson J G FONSECA, Tomáš TYC a Oscar QUEVEDO-TERUEL. A General Solution for Double-Layer Gradient-Index and Geodesic Lenses with Rotational Symmetry. In \textit{2023 17th European Conference on Antennas and Propagation (EuCAP)}. NEW YORK: IEEE, 2023, s.~1-5. ISBN~978-1-6654-7541-9. Dostupné z: https://dx.doi.org/10.23919/EuCAP57121.2023.10133223.
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