Surface-Mounted Ka-Band Vivaldi Antenna Array

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The first electrically steerable dual-polarized Ka-band Vivaldi antenna array with connector-less, surface-mount interface is developed. The antenna interface includes integrated coaxial feed lines within the antenna element structure and contact pads on the PCB. The antenna array covers the frequency range from 26 to 40 GHz with a beam steering range of approximately ±60° in the elementary planes and ±50° in the diagonal plane, having less than 3dB of scan loss. The 8\times 8 antenna array is manufactured with a feeding network for one polarization, and the operation of the interface and the electrical beam steering is demonstrated. Measurements are used to characterize the manufactured feed network, the gain of the antenna array and the steering range. The measured gain is between 19 and 22dB, agreeing very well with the simulation and implying that the antenna interface operates properly. Furthermore, the antenna scan measurements agree with the simulation results.

Original languageEnglish
Article number9302590
Pages (from-to)126-137
Number of pages12
JournalIEEE Open Journal of Antennas and Propagation
Publication statusPublished - 2021
MoE publication typeA1 Journal article-refereed


  • 5G
  • antenna array
  • electronically scanned array
  • flared-notch antenna
  • Ka band
  • phased array
  • tapered slot
  • Vivaldi antenna
  • wideband
  • surface-mounted antenna array


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