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Ultrawideband Metasurface Lenses Based on Off-Shifted Opposite Layers
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-4900-4788
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
2016 (English)In: IEEE Antennas and Wireless Propagation Letters, ISSN 1536-1225, E-ISSN 1548-5757, Vol. 15, 484-487 p.Article in journal (Refereed) Published
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Abstract [en]

Metasurfaces have demonstrated to be a low-cost solution for the development of directive antennas at high frequency. One of the opportunities of metasurfaces is the possibility to produce planar lenses. However, these lenses usually present a narrow band of operation. This limitation on bandwidth is more restrictive when the required range of refractive index is high. Here, we present a novel implementation of metasurfaces with low dispersion that can be employed for the design of ultrawide-band planar lenses. The implementation consists of two mirrored metasurfaces that are displaced exactly a half unit cell. This displacement produces two effects: It increases the equivalent refractive index of the fundamental mode and flattens its frequency dependence.

Place, publisher, year, edition, pages
2016. Vol. 15, 484-487 p.
Keyword [en]
Luneburg lens, metasurfaces, parallel-plate waveguide, ultrawideband lens
National Category
Electrical Engineering, Electronic Engineering, Information Engineering Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-185389DOI: 10.1109/LAWP.2015.2492678ISI: 000372419900010Scopus ID: 2-s2.0-84964325564OAI: oai:DiVA.org:kth-185389DiVA: diva2:920484
Note

QC 20160418

Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2016-04-18Bibliographically approved

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