High-efficiency single-layer corporate-feed gap waveguide based circularly polarized antenna array with compact size
Artikel i vetenskaplig tidskrift, 2024

A high-efficiency, single-layer gap waveguide based circularly polarized (CP) metasurface (MTS) antenna array has been proposed at Ka-band, employing a combination of printed circuit board (PCB) and machining techniques. The coupling slot parallel to the feeding ridge is proposed, which can be beneficial for designing single-layer ridge gap waveguide (RGW) networks, avoiding the traditional cavity layer and reducing the transmission loss. The MTS elements in a 4 × 4 lattice of truncated-corner patches are etched on a single substrate layer for lightweight and low-cost, validating the concept of a compact mixed design that can be easily adapted to other printed CP antennas. A 4 × 4 MTS array prototype was fabricated and tested. The impedance bandwidth and axial ratio bandwidth are 26–31.3 GHz (18.5%) and 28.2–33 GHz (15.7%), respectively. Over the entire operating bandwidth of 28.2–31.3 GHz (10.4%), antenna radiation efficiency exceeds 82%, and the maximum realized gain at 29.2 GHz is 21.2 dBi. The designed broadband MTS antenna array is efficient, compact, and suitable for certain millimeter-wave communication applications.


Gap waveguide (GW)

Metasurface(MTS) antenna

Circularly polarized


Liangyu Sun

Nanjing University of Science and Technology

Ashraf Uz Zaman

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Binyun Yan

Nanjing University of Science and Technology

Weixing Sheng

Nanjing University of Science and Technology

AEU - International Journal of Electronics and Communications

1434-8411 (ISSN)

Vol. 183 155341




Annan elektroteknik och elektronik



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