Wideband and Wide-Scan Gap Waveguide Antenna Array at W-band for 6G Applications
Licentiatavhandling, 2023
This work attempts to fill in this knowledge gap by presenting a new array antenna type based on the open-ended ridge gap waveguide (RGW). Such an antenna is of a particular interest at 100+ GHz owing to its contactless waveguide sidewall design, which alleviates active beam-steering electronics integration. Its fractional bandwidth is broadened by a relatively simple wideband impedance matching network, consisting 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 effects when used in arrays of such elements. Results demonstrate a wideangle beam-steering range (≥ 50◦) over ≥ 20% bandwidth at W-band, with ≥ 89% radiation efficiency. This 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.
In the second part of this Licentiate thesis, we present a linear array architecture as a building block of 2D arrays that can enable efficient beamsteering and a simplified array design. It includes a low-loss gap waveguidebased quasi-optical (QO) feed to provide a desired antenna port excitation with 1- /2-bit phase shifters which are co-integrated with the array antenna elements. The array design goals, i.e. the maximum available gain and minimum sidelobe levels are achieved through the optimum quasi-randomization of phase errors through the QO feed. The relationships between the key design parameters of the QO feed are determined analytically. The system-level performance for above-mentioned goals is studied numerically based on cascading the simulated / measured results of each individual system component: the QO feed, the RGW-to-phase-shifter transitions, the on-chip phase-shifters, and the array antennas.
W-band
quasi-optical feed.
beam steering
Array antenna
ridge gap waveguide
Författare
Yingqi Zhang
Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk
W-band Waveguide Antenna Elements for Wideband and Wide-Scan Array Antenna Applications For Beyond 5G
15th European Conference on Antennas and Propagation, EuCAP 2021,;(2021)p. 1-5
Paper i proceeding
Wideband Open-Ended Ridge Gap Waveguide Antenna Elements for 1-D and 2-D Wide-Angle Scanning Phased Arrays at 100 GHz
IEEE Antennas and Wireless Propagation Letters,;(2022)
Artikel i vetenskaplig tidskrift
Mutual Coupling Analysis of Open-Ended Ridge and Ridge Gap Waveguide Radiating Elements in an Infinite Array Environment
2022 52nd European Microwave Conference, EuMC 2022,;(2022)p. 696-699
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Millimeter-Wave Quasi-Optical Feeds for Linear Array Antennas in Gap Waveguide Technology
2022 16th European Conference on Antennas and Propagation, EuCAP 2022,;(2022)
Paper i proceeding
Quasi-Optical Beamforming Network for Millimeter-Wave Electronically Scanned Array Antennas with 1-Bit Phase Resolution
15th European Conference on Antennas and Propagation, EuCAP 2021,;(2021)p. 1-5
Paper i proceeding
MyWave - Efficient Millimetre-Wave Communications for mobile users
Europeiska kommissionen (EU) (EC/H2020/860023), 2019-10-01 -- 2023-09-30.
Ämneskategorier
Telekommunikation
Kommunikationssystem
Annan elektroteknik och elektronik
Utgivare
Chalmers