Mutual coupling reduction between microstrip patch antennas using slotted-complementary split-ring resonators

Mohammed M. Bait-Suwailam, Omar F. Siddiqui, Omar M. Ramahi

Research output: Contribution to journalArticle

185 Citations (Scopus)


A novel structure based on complementary split-ring resonators (SRRs) is introduced to reduce the mutual coupling between two coplanar microstrip antennas that radiate in the same frequency band. The new unit cell consists of two complementary SRR inclusions connected by an additional slot. This modification improves the rejection response in terms of bandwidth and suppression. The filtering characteristics of the band-gap structure are investigated using dispersion analysis. Using the new structure, it was possible to achieve a 10-dB reduction in the mutual coupling between two patch antennas with a separation of only 1/4 free-space wavelength between them. Since the proposed structures are broadband, they can be used to minimize coupling and co-channel interference in multiband antennas.

Original languageEnglish
Article number5565383
Pages (from-to)876-878
Number of pages3
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2010



  • Complementary split-ring resonators (CSRRs)
  • defected slots
  • low-profile antennas
  • microstrip patch antennas
  • mutual coupling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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