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Ultrawideband Anisotropic Glide-Symmetric Metasurfaces
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering.ORCID iD: 0000-0002-8608-0640
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering.ORCID iD: 0000-0002-4900-4788
2019 (English)In: IEEE Antennas and Wireless Propagation Letters, ISSN 1536-1225, E-ISSN 1548-5757, Vol. 18, no 8, p. 1547-1551Article in journal (Refereed) Published
Abstract [en]

This letter presents a method to realize anisotropic two-dimensional designs with wideband operation. Glide symmetry has been proven to increase the bandwidth and equivalent refractive index of periodic structures. Here, two anisotropic glide-symmetric unit cells are proposed and characterized. Our simulated results prove that these unit cells follow the general behavior of periodic structures possessing glide symmetry. Moreover, we demonstrate that higher level of anisotropy can also be achieved by glide symmetry. Combining our proposed anisotropic glide-symmetric unit cell and transformation optics, a 30% compressed Luneburg lens is designed. The lens operates from 1 to 13 GHz.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2019. Vol. 18, no 8, p. 1547-1551
Keywords [en]
Anisotropy, glide symmetry, Luneburg lens, metasurfaces, transformation optics
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Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-257559DOI: 10.1109/LAWP.2019.2922238ISI: 000480310900003Scopus ID: 2-s2.0-85070460292OAI: oai:DiVA.org:kth-257559DiVA, id: diva2:1353790
Note

QC 20190924

Available from: 2019-09-24 Created: 2019-09-24 Last updated: 2019-09-24Bibliographically approved

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Ebrahimpouri, MahsaQuevedo-Teruel, Oscar

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