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Reducing the Dispersion of Periodic Structures with Twist and Polar Glide Symmetries
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).ORCID iD: 0000-0002-9509-2811
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-4900-4788
2017 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 7, article id 10136Article in journal (Refereed) Published
Abstract [en]

In this article, a number of guiding structures are proposed which take advantage of higher symmetries to vastly reduce the dispersion. These higher symmetries are obtained by executing additional geometrical operations to introduce more than one period into the unit cell of a periodic structure. The specific symmetry operations employed here are a combination of p-fold twist and polar glide. Our dispersion analysis shows that a mode in a structure possessing higher symmetries is less dispersive than in a conventional structure. It is also demonstrated that, similar to the previously studied Cartesian glide-symmetric structures, polar glide-symmetric structures also exhibit a frequency independent response. Promising applications of these structures are leaky-wave antennas which utilize the low frequency dependence.

Place, publisher, year, edition, pages
2017. Vol. 7, article id 10136
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Other Physics Topics Atom and Molecular Physics and Optics
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URN: urn:nbn:se:kth:diva-214497DOI: 10.1038/s41598-017-10566-wISI: 000408781000032Scopus ID: 2-s2.0-85028581605OAI: oai:DiVA.org:kth-214497DiVA, id: diva2:1146263
Note

QC 20171002

Available from: 2017-10-02 Created: 2017-10-02 Last updated: 2017-10-02Bibliographically approved

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Dahlberg, Carl F. O.Quevedo-Teruel, Oscar

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