Application of complementary split-ring resonators to the design of compact narrow band-pass structures in microstrip technology

Jordi Bonache, Ferran Martín, Francisco Falcone, Juan D. Baena, Txema Lopetegi, Joan García-García, Miguel A.G. Laso, Ignacio Gil, Antonio Marcotegui, Ricardo Marqués, Mario Sorolla

Research output: Contribution to journalArticleResearchpeer-review

65 Citations (Scopus)

Abstract

In this paper, a compact and narrowband microstrip band-pass structure based on complementary split-ring resonators (CS-RRs) etched in the back metal level (ground plane) is presented. Specifically, the structure is a two-stage CSRR-based device, where a series gap is etched in the output CSRR stage and two shunt stubs are added in the input cell. By these means we obtain a narrow and quite symmetric band-pass structure. A prototype device with 2% fractional bandwidth has been designed and fabricated for operation at the S-band. The dimensions of the device are as small as 14.6 × 11 mm, while high-frequency selectivity is achieved at both band edges due to the presence of two transmission zeros. To demonstrate the possibility to control the bandwidth over a narrow band, a wider (10% bandwidth) filter has been also designed and fabricated. These structures can be of interest for application in narrow band-pass filters where miniaturization and compatibility with planar technologies are key issues. © 2005 Wiley Periodicals, Inc.
Original languageEnglish
Pages (from-to)508-512
JournalMicrowave and Optical Technology Letters
Volume46
DOIs
Publication statusPublished - 5 Sep 2005

Keywords

  • Complementary SRRs
  • Duality
  • Microstrip technology
  • Microwave filters

Fingerprint Dive into the research topics of 'Application of complementary split-ring resonators to the design of compact narrow band-pass structures in microstrip technology'. Together they form a unique fingerprint.

Cite this