A 50 dBi E-Band Dual-reflector Antenna for 5G Backhauling with Auto-beam-tracking Function
Artikel i vetenskaplig tidskrift, 2024

An ultra-high-gain E-band dual-reflector antenna for 5G backhaul with beam tracking function is proposed in this paper. Beam tracking is achieved by defocussing the feed away from the focus point of the sub-reflector, while keeping the interface with the transmit-receive unit stationary by applying a movable gap-waveguide configuration. The antenna has been prototyped and measured. The measured reflection coefficients remain below –10 dB for both horizontal and vertical polarizations over 71 – 86 GHz, almost independent from the offset positions of the feed. The measured radiation patterns agree well with the simulated ones, with a peak gain of about 50 dBi in the band and less than 1 dB gain drop for beam steering within ±2°. Finally, a low-cost and environmentally friendly mechanical tracking system is proposed, prototyped, and tested. Measurements have verified that the tracking system functions well for slow sways.

Gravity-driven system

Beam steering

Ultra-high gain

Beam tracking

Directive antennas

Reflector antennas

UHF antennas

Gap waveguide

Mast sway


5G backhaul

Millimeter wave communication

Mechanical movement

Antenna feeds


Enlin Wang

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Sam Agneessens

Ericsson AB

Oskar Talcoth

Ericsson AB

L. Manholm

Ericsson AB

Carlo Bencivenni

Gapwaves AB

Esperanza Alfonso Alos

Gapwaves AB

Anders Wennergren

Gapwaves AB

Henrik Stalrud

Gapwaves AB

Ashraf Uz Zaman

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Jian Yang

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN) 1558-2221 (eISSN)

Vol. In Press




Annan elektroteknik och elektronik



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