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Compact Multibeam Fully Metallic Geodesic Luneburg Lens Antenna Based on Non-Euclidean Transformation Optics
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering.ORCID iD: 0000-0002-7243-6167
Antenna and Sub-Millimeter Waves Section, European Space Agency, Noordwijk, 2200 AG, Netherlands.ORCID iD: 0000-0002-7971-8706
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering.ORCID iD: 0000-0002-4900-4788
2018 (English)In: IEEE Transactions on Antennas and Propagation, ISSN 0018-926X, E-ISSN 1558-2221, Vol. 66, no 12, p. 7383-7388Article in journal (Refereed) Published
Abstract [en]

Non-Euclidean transformations have been recently proposed to produce a link between 3-D homogeneous surfaces and 2-D dielectric lenses. Therefore, the propagation in a geometrical surface has the same response of an equivalent refractive index distribution. By using this concept, we propose here a fully metallic Luneburg lens where the propagation is only in the air. Two metallic plates, following a curved shape, are employed to support the propagation mimicking the designed curvature. To reduce the height of the required curvature, the surface has been mirrored twice with respect to two z constant planes. The lens is fed by 11 waveguide ports spaced with an angle of 12.5° providing 1-D beam scanning over an angular range of ±62.5°. A prototype is manufactured and measured with a good agreement with the simulated results between 25 and 36 GHz to demonstrate the concept.

Place, publisher, year, edition, pages
IEEE, 2018. Vol. 66, no 12, p. 7383-7388
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-250662DOI: 10.1109/TAP.2018.2872766ISI: 000451994900076Scopus ID: 2-s2.0-85054530967OAI: oai:DiVA.org:kth-250662DiVA, id: diva2:1313044
Note

QC 20190507

Available from: 2019-05-02 Created: 2019-05-02 Last updated: 2019-05-07Bibliographically approved

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Liao, QingbiQuevedo-Teruel, Oscar

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