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On the use of a met...
On the use of a metasurface prism in gap-waveguide technology to reduce the dispersion of leaky-wave antennas
- Artikel/kapitelEngelska2018
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Institution of Engineering and Technology,2018
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LIBRIS-ID:oai:DiVA.org:kth-246535
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-246535URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:kon swepub-publicationtype
Anmärkningar
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QC 20190403
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Leaky-wave antennas (LWAs) feature the advantages of high directivity, wide impedance bandwidth, and their ability to scan with frequency. However, the dispersive beam-scanning makes the LWAs very difficult to be utilized in systems that require high-speed data transfer, wide band and high directive antennas. This paper proposes a simple but effective method to reduce the dispersion of LWAs by loading with a metasurface prism realized in gap-waveguide technology. Naturally combining the two technologies, a leaky-wave gap waveguide antenna and a dispersive prism, a low-dispersive gap-waveguide leaky-wave antenna is achieved, with a specific radiation direction that in this example is =4l°. The main radiation direction varies only ±0.5° from 11.5 to 13.0 GHz, with side-lobe levels lower than -13 dB. A 20% half-power gain-drop frequency bandwidth has been obtained. The realized gain varies from 16.4 to 16.8 dBi with a narrow half-power beamwidth of 5°. The full-wave simulations in HFSS agree well with the theoretical calculations.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Gomez-Tornero, J. L.
(författare)
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Rajo-Iglesias, E.
(författare)
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Quevedo-Teruel, OscarKTH,Elektroteknisk teori och konstruktion(Swepub:kth)u16a6hjt
(författare)
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KTHElektroteknisk teori och konstruktion
(creator_code:org_t)
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Ingår i:IET Conference Publications: Institution of Engineering and Technology
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