Wideband and Wide Beam Scanning Dual-Polarized Phased Array Antenna-in-Package Design for 5G Applications

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Abstract

Millimeter (mmWave) 5G phased arrays require multiple simultaneous features for reliable high data-rate communication. However, it is challenging to simultaneously achieve a true wideband operation for all parameters due to mutual coupling and grating lobe issues. A 5 W 5-stacked patch rectangular phased array was designed and fabricated in a 15-layer low-temperature co-firing ceramic (LTCC) substrate. This work utilized multiple design strategies, such as employing stacked patch topology, electromagnetic band gap (EBG) structures, and the rotation of elements to obtain a true wideband performance. The single element of the phased array was a dual linear polarized stacked patch antenna with notched corners. Compared to a standard patch antenna, the bandwidth was enhanced by 15.3%. The undesired mutual coupling between elements was minimized by rotating nearby elements and introducing EBG structures between the adjacent elements. A wideband beamforming network composed of a Rotman lens and a 5-way Wilkinson power divider (WPD) was also designed and fabricated. The proposed phased array achieved 6 GHz of bandwidth, covering 24 to 30 GHz and achieving a maximum gain of 17.5 dBi and a wide beam-scanning range from –50 to +50 degrees. This work also introduced a figure of merit (FoM) based on all critical performance parameters for objective comparison with state-of-the-art designs. The proposed design achieved the highest FoM (0.451), whereas most similar 5G phased array designs achieved much lower FoM value.

Original languageEnglish (US)
Pages (from-to)1
Number of pages1
JournalIEEE Open Journal of Antennas and Propagation
Volume5
Issue number1
DOIs
StateAccepted/In press - 2023

Bibliographical note

Publisher Copyright:
Authors

Keywords

  • 5G mobile communication
  • Antenna arrays
  • beam scanning
  • low-temperature co-firing ceramic
  • millimeter 5G
  • Millimeter wave communication
  • Mutual coupling
  • Patch antennas
  • phased array
  • Phased arrays
  • Wideband

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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