Multimode propagation and complex waves in CSRR-based transmission-line metamaterials

Jordi Naqui, Miguel Duran-Sindreu, Armando Fernandez-Prieto, Francisco Mesa, Francisco Medina, Ferran Martin

Research output: Contribution to journalArticleResearchpeer-review

17 Citations (Scopus)


Transmission-line metamaterials based on complementary split-ring resonators (CSRRs) are shown to support forward, backward, electroinductive, and complex waves. Two CSRR-based lines are considered: 1) stopband microstrip lines simply loaded with CSRRs, and 2) passband microstrip lines loaded with CSRRs and series gaps. The effects of interresonator coupling on bandwidth enhancement are analyzed on the basis of Bloch mode theory by considering the lumped-element equivalent 4-port circuit model of the unit cell. All the propagation modes are captured by the proposed multiterminal Bloch mode theory, from an eigenmode analysis. The results are validated through a commercial eigenmode solver and supported by experimental data. © 2002-2011 IEEE.
Original languageEnglish
Article number6280612
Pages (from-to)1024-1027
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 19 Sep 2012


  • Complementary split-ring resonators (CSRRs)
  • complex waves
  • electroinductive waves
  • metamaterials


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