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Open Access Publications from the University of California

Terahertz composite right-left handed transmission-line metamaterial waveguides

  • Author(s): Liu, Z
  • Hon, PWC
  • Tavallaee, AA
  • Itoh, T
  • Williams, BS
  • et al.

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We report terahertz metamaterial waveguides based on the concept of composite right/left-handed transmission-lines. The waveguides are implemented in a metal-insulator-metal geometry fabricated with spin-coated Benzocyclobutene and contact photolithography. Angle-resolved reflection spectroscopy shows strong resonant absorption features corresponding to both right-handed and left-handed (backward wave) propagating modes within the leaky-wave bandwidth. Tuning of the waveguide dispersion is achieved by varying the effective lumped element series capacitance. The experimental results are in good agreement with full-wave finite element method simulations as well as an intuitive transmission-line circuit model. © 2012 American Institute of Physics.

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