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On the use of a metasurface prism in gap-waveguide technology to reduce the dispersion of leaky-wave antennas
- Wang, L. (author)
- Gomez-Tornero, J. L. (author)
- Rajo-Iglesias, E. (author)
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- Institution of Engineering and Technology, 2018
- 2018
- English.
- In: IET Conference Publications. - : Institution of Engineering and Technology.
- Conference paper (peer-reviewed)
Abstract
Subject headings
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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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)
Keyword
- Dispersive lens
- Gap waveguide
- Leaky-wave antennas (LWAs)
- Metasurface
Publication and Content Type
- ref (subject category)
- kon (subject category)
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