Multi-Mode Dual-Polarized Cavity Backed Patch Antenna Array for 5G Mobile Devices

Carla di Paola, Kun Zhao, Gert Frølund Pedersen, Shuai Zhang*

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

This paper proposes a dual-polarized cavity backed patch antenna for next generation phased arrays for mobile handsets. The antenna exhibits multi-band performance, allowing to cover the 5G bands n257 (26.5 - 29.5 GHz), n258 (24.25 - 27.5 GHz), n261 (27.5 - 28.35 GHz) and a portion of band n260 (37 - 40 GHz). Two orthogonal modes are excited
in the SIW cavity and show similar impedance matching and symmetric radiation patterns. A parasitic element is introduced on top of the cavity and shifted off-center, to improve the port-to-port isolation and guide the main beam. A parametric study of the antenna dimensions is conducted to verify the multi-resonance operating mechanism. The design is validated by the measurements of the fabricated 4-elements array. The array scanning angle is from -35° to 38° for V-pol and from -29° to 31° for H-pol at 28 GHz, where the realized gain raises from 8 to 12 dBi.
Original languageEnglish
JournalIET Microwaves, Antennas & Propagation
Volume15
Issue number3
Pages (from-to)280-288
Number of pages9
ISSN1751-8725
DOIs
Publication statusPublished - 29 Jan 2021

Keywords

  • Mobile terminal antenna
  • Cavity backed patch antenna
  • Multi-band
  • High gain
  • Dual polarization
  • 5G communication

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