Wideband Open-Ended Ridge Gap Waveguide Antenna Elements for 1-D and 2-D Wide-Angle Scanning Phased Arrays at 100 GHz
Artikel i vetenskaplig tidskrift, 2022

A new antenna element type based on the open-ended ridge gap waveguide (RGW) is proposed for beam-steering phased array applications. This element type is of a particular interest at high mm-wave frequencies (≥ 100 GHz) owing to a contactless design alleviating active beam-steering electronics integration. The key challenge addressed here is a realization of a wide fractional bandwidth and scan range with high radiation efficiency. We demonstrate a relatively simple wideband impedance matching network comprised of an aperture stepped ridge segment and a single-pin RGW section. Furthermore, the E- and H-plane grooves are added that effectively suppress antenna elements mutual coupling. Results demonstrate a wide-angle beam steering (≥ 50°) over ≥ 20% fractional bandwidth at W-band with ≥ 89% radiation efficiency that significantly outperforms existing solutions at these frequencies. An experimental prototype of a 1×19 W-band array validates the proposed design concept through the embedded element pattern measurements.

Millimeter waves


Scanning antennas

Microwave antennas

Directional patterns (antenna)

Antenna phased arrays

Ridge waveguides



Yingqi Zhang

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Artem Vilenskiy

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Marianna Ivashina

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

IEEE Antennas and Wireless Propagation Letters

1536-1225 (ISSN)

MyWave - Efficient Millimetre-Wave Communications for mobile users

Europeiska kommissionen (EU) (EC/H2020/860023), 2019-10-01 -- 2023-09-30.




Annan elektroteknik och elektronik



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