Broadband microwave filters based on open split ring resonators (OSRRs) and open complementary split ring resonators (OCSRRs): Improved models and design optimization

Miguel Durán-Sindreu, Paris Vélez, Jordi Bonache, Ferran Martín

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)

Abstract

The paper is focused on the design of broadband bandpass filters at microwave frequencies. The proposed filters are based on a combination of open split ring resonators (OSRRs) and open complementary split ring resonators (OCSRRs) loaded in a host transmission line. Since these resonators (OSRRs and OCSRRs) are electrically small, the resulting filters are compact. As compared to previous papers by the authors on this topic, the main aim and originality of the present paper is to demonstrate that by including a new series inductance in the circuit model of the OCSRR, it is possible to improve the predictions of these filter models and better fit the measured filter responses. Moreover, the parameter extraction method of the new circuit model and an automated filter design technique is introduced and demonstrated. The paper is complemented with the design and comparison of several prototypes.
Original languageEnglish
Pages (from-to)775-784
JournalRadioengineering
Volume20
Issue number4
Publication statusPublished - 1 Dec 2011

Keywords

  • Bandpass filters
  • Metamaterials
  • Open complementary split ring resonator
  • Open split ring resonator

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