Dual-band slot microstrip patch antennas with dual-radiation modes for wireless communication

Guangwei Yang*, Jianying Li, Jiangjun Yang, Zijian Xing

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In this paper, a novel compact dual-band microstrip patch antenna with dual-radiation modes is investigated. The proposed antenna consists of a rectangular ground plane, a U-shaped feed probe, and an H-shaped slot radiating patch. By adjusting the size of these structures, a dual-band antenna can be obtained. In the low-frequency band, the antenna can radiate one radiation beam with high gain. In the high-frequency band, the antenna can achieve monopole-like radiation pattern. Therefore, an antenna prototype is fabricated and measured for validation. Good agreement between the simulated and measured results is observed in this paper. The antenna's operating frequency ranges are 3.6-3.85 GHz in the low-frequency band and 5.1-6.1 GHz in the high-frequency band with the reflection coefficient less than -10 dB. At 3.7 GHz, the antenna radiate one beam with 8.8 dBi realized gain. At 5.5 GHz, it exhibits dual-radiation beams directed to -48 and 48° with 5.6 and 5.5 dBi realized gain in the xoz-plane and -48 and 48° with 2.9 and 3.0 dBi realized gain in the yoz-plane. Therefore, the proposed antenna is a good candidate for wireless communication systems.

Original languageEnglish
JournalInternational Journal of Microwave and Wireless Technologies
Volume12
Issue number2
Pages (from-to)155-162
Number of pages8
ISSN1759-0787
DOIs
Publication statusPublished - 2020

Keywords

  • dual-band
  • Low profile
  • microstrip antenna
  • radiation pattern
  • Dual-band
  • monopole-like pattern
  • low-profile
  • symmetrical radiation pattern

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