Journal
IETE JOURNAL OF RESEARCH
Volume 68, Issue 6, Pages 4335-4345Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03772063.2020.1792357
Keywords
DNG; Double negative; ENG; Epsilon negative; Left handed materials; LHM; Metamaterials; MNG
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This study designs a meta-material unit cell with a negative permittivity in the X band and demonstrates its performance through simulation and measurement. The unit shows a negative refractive index within a specific frequency range.
A simple meta-material unit cell with a negative permittivity in the X band is designed in this work. This meta-material cell is a one-sided cell which is simulated to extract scattering parameters, permittivity and permeability. Four different unit cells were examined and simulated to achieve the final structure. The effects of mutual-coupling of unit cells on structural performance were also investigated. Finally, a 7*7 array was constructed from these unit cells. The measurement and simulation results were acceptably consistent. The results show that this structure has a negative refractive index in the frequency range of 9.2-11.7 GHz.
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