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Published January 1, 2014 | Version v1
Journal article Open

Refractive properties of wire-grid metamaterials

Creators

  • 1. Natl Inst Space Res INPE, BR-12227010 Sao Jose Dos Campos, SP, Brazil
  • 2. Technol Inst Aeronaut ITA, Sao Jose Dos Campos, SP, Brazil
  • 3. Gaziantep Univ, TR-27310 Gaziantep, Turkey

Description

This paper reports on a quantitative analysis of the electromagnetic properties of an arrangement of periodic metallic grids devised to provide in the 12.5-20.0GHz frequency range a refractive index less than unity with view to enhance the functionalities of microwave horn antennas. Based on an analytical model, the ultra-refractive behavior of the metamaterial structure is demonstrated by the impedance and refractive index values retrieved from simulated scattering parameters.

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