| 1. |
- Ebrahimpouri, Mahsa, et al.
(author)
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Design of microwave components in groove gap waveguide technology implemented by holey EBG
- 2017
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In: 2017 11th European Conference on Antennas and Propagation, EUCAP 2017. - : Institute of Electrical and Electronics Engineers (IEEE). - 9788890701870 ; , s. 746-748
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Conference paper (peer-reviewed)abstract
- In this paper, the feasibility of the implementation of microwave components in groove gap waveguide technology by glide-symmetry holey EBG is discussed. Using this technology, microwave components and antennas which were previously designed for hollow metallic waveguides can be manufactured in a cost-effective way at high frequencies. To show the viability of the proposed solution a phase shifter and a mode converter are designed as examples of typical components for antenna systems.
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| 2. |
- Ebrahimpouri, Mahsa, et al.
(author)
-
Low-cost metasurface using glide symmetry for integrated waveguides
- 2016
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In: 2016 10th European Conference on Antennas and Propagation, EuCAP 2016. - : Institute of Electrical and Electronics Engineers (IEEE). - 9788890701863
-
Conference paper (peer-reviewed)abstract
- A novel Electromagnetic Band Gap (EBG) structure based on an off-shifted periodic metasurface is presented here. This technique can be employed for packaging of electrical circuits and gap waveguide technology. The proposed structure is easy to manufacture since it only requires drilling holes in metallic plates, reducing the cost when compared to previous works based on other textured surfaces.
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| 3. |
- Ebrahimpouri, Mahsa, et al.
(author)
-
Wideband glide-symmetric holey structures for gap-waveguide technology
- 2017
-
In: 2017 11th European Conference on Antennas and Propagation, EUCAP 2017. - : Institute of Electrical and Electronics Engineers (IEEE). - 9788890701870 ; , s. 1658-1660
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Conference paper (peer-reviewed)abstract
- In this paper, the stop-band of two different holey glide-symmetric EBG lattices is studied. The results show that glide-symmetric EBG structures have potential to achieve wide stop-bands by polygonal lattices. Potential application of the proposed EBG structure in gap-waveguide technology is discussed in the second part of the paper.
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| 4. |
- Wang, L., et al.
(author)
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On the use of a metasurface prism in gap-waveguide technology to reduce the dispersion of leaky-wave antennas
- 2018
-
In: IET Conference Publications. - : Institution of Engineering and Technology.
-
Conference paper (peer-reviewed)abstract
- 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.
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