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A bespoke lens for a slot log-spiral excitation
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
2018 (English)In: IET Conference Publications, Institution of Engineering and Technology , 2018, no CP741Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, a bespoke lens has been designed for a slot log-spiral excitation. The performance of this lens is compared with a conventional hyper-hemispherical lens. Using the bespoke lens methodology, the specific electromagnetic properties of the slot log-spiral excitation are obtained and its phase fronts are transformed to flat phase fronts by a QCTO (quasi-conformal transformation optics) technique. The performance of the lenses is evaluated with the radiation properties. The bespoke lens produces an improvement in terms of directivity and side lobe levels.

Place, publisher, year, edition, pages
Institution of Engineering and Technology , 2018. no CP741
Keywords [en]
Bespoke lens, Lens antenna, Log-spiral, QCTO, Transformation optics, Conformal mapping, Electric excitation, Spiral antennas, Conformal transformation, Electromagnetic properties, Hemispherical lens, Radiation properties, Sidelobe levels, Lens antennas
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-247464ISI: 000400922600014Scopus ID: 2-s2.0-85057320447OAI: oai:DiVA.org:kth-247464DiVA, id: diva2:1302940
Conference
12th European Conference on Antennas and Propagation, EuCAP 2018, 9 April 2018 through 13 April 2018
Note

QC20190408

Available from: 2019-04-08 Created: 2019-04-08 Last updated: 2019-04-08Bibliographically approved

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Scopushttps://www.eucap2018.org/

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Ebrahimpouri, MahsaQuevedo-Teruel, Oscar

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CiteExportLink to record
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Output format
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