Mutual Coupling Reduction Between Closely Placed Patch Antennas Using Complementary U-Shaped Polarization Converter

ODABAŞI H., Salimitorkamani M., Turan G.

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, vol.22, no.11, pp.2710-2714, 2023 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 11
  • Publication Date: 2023
  • Doi Number: 10.1109/lawp.2023.3276527
  • Journal Name: IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.2710-2714
  • Karadeniz Technical University Affiliated: No

Abstract

letter presents mutual coupling reduction between two closely spaced E-coupled patch antennas using a complementary U-shaped polarization converter. The edge-to-edge distance of the antennas is 0.1 lambda(0), and the proposed approach achieves an average of 8 dB for the -10 dB bandwidth and a maximum of 13 dB mutual coupling reduction in measurement. To reduce the increased cross-polarization results in the E-plane, L-shaped stubs are added to the upper and lower edges of the antennas. Thanks to the stubs, the cross-polarization levels are improved from -12 to -29 dB for the E-plane. Due to its simple design, preserved radiation characteristics, and avoidance of ground plane etching, the antenna is a good candidate for next-generation antenna array applications requiring low mutual coupling and cross polarization.