A Compact Gap-Waveguide Dual-Polarized Ka-Band Feed for 50dBi Reflector Antennas With Tracking Function

Enlin Wang; Tianling Zhang; Ashraf Uz Zaman; Thomas Emanuelsson; Per-Arne Thorsen; Sam Agneessens; Jian Yang

doi:10.1109/ACCESS.2022.3202314

IEEE Access (Jan 2022)

A Compact Gap-Waveguide Dual-Polarized Ka-Band Feed for 50dBi Reflector Antennas With Tracking Function

Enlin Wang,
Tianling Zhang,
Ashraf Uz Zaman,
Thomas Emanuelsson,
Per-Arne Thorsen,
Sam Agneessens,
Jian Yang

Affiliations

Enlin Wang: ORCiD; Department of Electronic Engineering, Chalmers University of Technology, Gothenburg, Sweden
Tianling Zhang: ORCiD; Department of Electronic Engineering, Xidian University, Xi’an, China
Ashraf Uz Zaman: Department of Electronic Engineering, Chalmers University of Technology, Gothenburg, Sweden
Thomas Emanuelsson: Department of Transport Systems, Ericsson AB, Gothenburg, Sweden
Per-Arne Thorsen: Department of Transport Products, Ericsson AB, Gothenburg, Sweden
Sam Agneessens: Department of Research, Ericsson AB, Gothenburg, Sweden
Jian Yang: ORCiD; Department of Electronic Engineering, Chalmers University of Technology, Gothenburg, Sweden

DOI: https://doi.org/10.1109/ACCESS.2022.3202314
Journal volume & issue: Vol. 10
pp. 91622 – 91630

Abstract

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A dual-polarized Ka-band feed based on gap waveguide (GW) technology for an ultra-high-gain reflector antenna is presented. The feed provides SUM-beams for data transfer and DIFF-beams for tracking. The whole reflector antenna is composed of the feed and a dual-reflector Cassegraine antenna. The feed has been prototyped, and the measured reflection coefficients for the horizontally and the vertically polarized SUM-beam ports are below −10 dB and −8 dB over 30.8–38 GHz, respectively. The measured feed radiation patterns agree well with the simulated ones. The dual-reflector Cassegraine antenna has been designed and simulated by using GRASP with the simulated far-field function of the proposed feed, showing that the reflector antenna achieves SUM-beam gains above 50 dBi and the null depth of the DIFF-beams are more than 30 dB below the maximum of SUM-beams.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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