A 28 GHz 8×8 Gapwaveguide Phased Array Employing GaN Front-End with 60 dBm EIRP

Alireza Bagherimoghim, Carlo Bencivenni, Magnus Gustafsson, Andrés Alayón Glazunov

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
272 Downloads (Pure)


A cost-efficient, high equivalent isotropic radiated power (60 dBm), large-bandwidth (26.5-29.5 GHz) active phased array antenna system has been designed and experimentally verified. The proposed design methodology results in a reduction of production costs by employing GaN-based radio frequency front-ends with 31 dBm output power allowing a reduced number of antenna elements. A fully metallic gapwaveguide technology has been employed achieving efficient heat dissipation per aperture area of the array as well as low-loss easy-to-manufacture antenna elements. The phased array is realized by subarraying an 8×8 slot array antenna with horizontal polarization. A ±60° analog beamforming in the E-plane is demonstrated. The presented antenna is a potential candidate for compact-size high-performance 5G base station antennas with excellent temperature stability.
Original languageEnglish
Article number10036379
Pages (from-to)4510-4515
Number of pages6
JournalIEEE transactions on antennas and propagation
Issue number5
Early online date3 Feb 2023
Publication statusPublished - 1 May 2023


  • Phased arrays
  • Antenna arrays
  • Heating systems
  • Power generation
  • Silicon germanium
  • Gain
  • Power amplifiers
  • 2023 OA procedure


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