Doubly tuned metamaterial transmission lines based on complementary split-ring resonators

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4 Citations (Scopus)

Abstract

In this article, tuning is applied to metamaterial transmission lines loaded with complementary split-ring resonators. Specifically, a double-tuning scheme is proposed, where one semiconductor varactor diode is placed between the inner and outer metallic regions of the complementary split-ring resonator, whereas the second varactor diode is placed in series with the host line above the position of the complementary split-ring resonator. By tuning the former varactor, we can tailor the electrical characteristics of the complementary split-ring resonator. By using the second varactor as a switch, we can choose operation of the structure as a left-handed or as a negative permittivity structure. The result is a reconfigurable/tunable filtering structure that can be used as notch filter or narrow band-pass filter. A prototype device has been designed and fabricated.
Original languageEnglish
Pages (from-to)523-530
JournalElectromagnetics
Volume28
DOIs
Publication statusPublished - 1 Oct 2008

Keywords

  • Complementary split-ring resonator
  • Filters
  • Metamaterials
  • Tuning

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