A novel band notched circular ring quad port UWB MIMO antenna

ÇELİK K.

Sadhana - Academy Proceedings in Engineering Sciences, vol.50, no.3, 2025 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 50 Issue: 3
  • Publication Date: 2025
  • Doi Number: 10.1007/s12046-025-02764-4
  • Journal Name: Sadhana - Academy Proceedings in Engineering Sciences
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, zbMATH, Civil Engineering Abstracts
  • Keywords: band-notched antenna, circular ring, Quad-port MIMO antenna, UWB antenna, WiMAX
  • Gazi University Affiliated: Yes

Abstract

This communication presents the design and implementation of the quad-port novel UWB MIMO antenna. The antenna has a notched band characteristic at 3.3–3.8 GHz WiMAX band. The system has a compact volume of 40 x 40 x 1.6 mm3. It has a simple circular ring structure and provides high isolation (minimum 18 dB and average 22dB) between antenna elements. It has a bandwidth of 8.1 GHz, between 2.5–10.6 GHz. The general metrics used for performance analyses, including gain, radiation efficiency and patterns, envelope correlation coefficient, and diversity gain are examined. It has a gain value between 2 and 4.5 dBi in the working band range and a minimum efficiency value of 84%. In addition to this, the system has a low ECC value. The obtained experimental results support the simulations, proving that the MIMO system works efficiently on the entire working band.