A Compact Gap-Waveguide Dual-Polarized Ka-Band Feed for 50dBi Reflector Antennas With Tracking Function
Journal article, 2022

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.

Antenna measurements

Antenna feeds

Antenna radiation patterns

Dual-polarized feed

Gain measurement

gapwave planar magic-T

UHF antennas

ultra-high-gain antenna

Millimeter wave communication

Geometry

feed with tracking functions

Author

Enlin Wang

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Tianling Zhang

Xidian University

Ashraf Uz Zaman

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Thomas Emanuelsson

Ericsson

Per-Arne Thorsen

Ericsson

Sam Agneessens

Ericsson

Jian Yang

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

IEEE Access

2169-3536 (ISSN) 21693536 (eISSN)

Vol. 10 91622-91630

FRIEND: Full Realization of extremely-high-gain mmW 50dBi+ 70GHz+ Gregorian Antenna with a new Gapwaveguide feed

VINNOVA (2021-01354), 2021-07-01 -- 2023-06-30.

Subject Categories

Accelerator Physics and Instrumentation

Other Physics Topics

Signal Processing

DOI

10.1109/ACCESS.2022.3202314

More information

Latest update

10/27/2023