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Implementation of a compact Ka-band parallel plate Luneburg lens based on a hybrid dielectric/metasurface unit cell
Ericsson AB, Ericsson Res, Gothenburg, Sweden..
Ericsson AB, Ericsson Res, Gothenburg, Sweden..
Ericsson AB, Ericsson Res, Gothenburg, Sweden..
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering.
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2019 (English)In: 13th European Conference on Antennas and Propagation, EuCAP 2019, IEEE, 2019, article id 8740306Conference paper, Published paper (Refereed)
Abstract [en]

The complete implementation and numerical validation of a compact cost-effective multiport parallel plate Luneburg lens antenna operating at 28 GHz is described in this paper. The lens design consists of two parallel plates separated by a gap where each of them contains a metasurface structure based on a new type of combined dielectric/holey unit cell periodically arranged in a glide-symmetric configuration. The required refractive index is achieved by a combination of coarse control by adding a dielectric in the gap, and fine tuning by changing the height of the holes. The simulations of the final prototype including a flare to ensure a smooth wave transition from the parallel plate configuration to air, as well as a coaxial-to-waveguide-to-parallel plate feeding, show a 20% bandwidth for 11.5 dB return loss, and the crosstalk remains below -15 dB for the same frequency band.

Place, publisher, year, edition, pages
IEEE, 2019. article id 8740306
Series
Proceedings of the European Conference on Antennas and Propagation, ISSN 2164-3342
Keywords [en]
glide symmetry, Luneburg lens, metasurface, parallel plate, transition, unit cell
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-257471ISI: 000480384703161Scopus ID: 2-s2.0-85068475035ISBN: 978-8-8907-0188-7 (print)OAI: oai:DiVA.org:kth-257471DiVA, id: diva2:1347835
Conference
13th European Conference on Antennas and Propagation, EuCAP 2019; Krakow; Poland; 31 March 2019 through 5 April 2019
Note

QC 20190902

Available from: 2019-09-02 Created: 2019-09-02 Last updated: 2019-09-02Bibliographically approved

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Quevedo-Teruel, Oscar

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