A Low-Profile Microstrip Vertically Polarized Endfire Antenna with 360° Beam-Scanning and High Beam-Shaping Capability

Yujie Zhang, Shiwen Tang*, Zixiang Han, Junhui Rao, Shanpu Shen, Min Li, Chi Yuk Chiu, Ross Murch

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

Abstract

A novel low-profile vertically polarized planar endfire smart antenna that can achieve 360° beam-steering and high beam-shaping capability is proposed. The microstrip antenna is printed on a single thin substrate with a vertically polarized omnidirectional driven source and 36 tunable slot-integrated microstrip vertically polarized resonators (SMVR) for shaping the endfire beams. To verify the design approach, a prototype operating at the 5 GHz WLAN band is fabricated and tested. The results show that the antenna operates from 5.55 to 5.75 GHz and is capable of scanning a single endfire beam from 0° to 360° in the full azimuth plane. The scanning resolution and the maximum realized gain are 15° and 8.2 dBi, respectively. Moreover, multiple radiation pattern shapes including omnidirectional beam, dual-beams, and tri-beams can also be generated by the antenna. The overall antenna height is only 0.06 λ at 5.6 GHz. This design provides a new antenna configuration for low-profile vertically polarized endfire beam-steering and beam-shaping antenna and is promising for future wireless communication systems with lost-cost beamforming property.

Original languageEnglish
Pages (from-to)7691-7702
Number of pages12
JournalIEEE Transactions on Antennas and Propagation
Volume70
Issue number9
DOIs
Publication statusPublished - 1 Sept 2022

Bibliographical note

Publisher Copyright:
© 2022 IEEE.

Keywords

  • Beam-scanning
  • pattern-reconfigurable antenna
  • planar antenna
  • smart antenna
  • vertical polarization

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