Multi-beam high gain steerable transmitarray lens for satellite communication and 5G mm-Wave systems

Shafaq Kausar, A.U. Kausar, Muhammad Usman Hadi, Hani Mehrpouyan

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This paper presents the design of a high gain multi-beam transmitarray antenna. Designed antenna is capable of independently steering multiple beams in the azimuth and elevation plane by the two dimensional displacement of feed radiators placed in front of the passive meta-surface. The meta-surface acts as an electromagnetic lens. Unit cell of the meta-surface consists of three layers of Rogers 5880 substrate and four layers of etched copper. Unit cell is designed such that the phase of unit cell transmission coefficient is varied from 0 ° to 360 ° by changing length of the etched copper pattern. As a proof of concept, meta-surface is designed by using uni-focal phase distribution. Multi-beam steering of 0 ° to 360 ° in azimuth plane and 0 ° to 40 ° in elevation plane has been achieved. Measured antenna peak gain is 34.2 dBi at 30 GHz. Later on, scan loss was optimized by synthesizing a meta-surface with bi-focal phase distribution. This is a mission enabling technology as the antenna supports seamless hand-off between satellites by forming multiple high gain independently steerable beams. Comparable antennas to the date are low gain, bulky, support limited number of beams, and have limited field of view. To the best of the author’s knowledge, it is first time that high gain multi-beam antenna has been demonstrated by using a passive bi-focal meta-surface for continuous beam steering. Due to absence of active components the designed antenna is low cost and robust. Moreover, the substrate is selected such that the antenna can withstand harsh deep space environment and it can be folded for easy deployment. Due to potentially low fabrication cost and ability to support multiple beams, the proposed antenna is a good candidate for next generation satellite communication and mm-Wave 5G systems.
Original languageEnglish
Article number154888
JournalInternational Journal of Electronics and Communications
Volume173
Early online date29 Sept 2023
DOIs
Publication statusPublished online - 29 Sept 2023

Bibliographical note

Funding Information:
This work has been funded by NASA, United States grant NNX17AJ94A .

Publisher Copyright:
© 2023 Elsevier GmbH

Keywords

  • 5G mobile communication
  • Adaptive arrays
  • Antenna arrays
  • Antenna radiation patterns
  • Phased arrays
  • Antenna feeds
  • Reflector antennas
  • Satellite antennas
  • Satellite communication

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