A microstrip tunable negative refractive index metamaterial and phase shifter

A tunable negative refractive index metamaterial and miniature phase shifter have been designed and fabricated in a microstrip configuration for applications in radio frequency integrated circuits. The metamaterial consists of plasmonic copper wires and yttrium iron garnet slabs having a low inserti...

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Bibliographic Details
Published in:Applied physics letters 2008-11, Vol.93 (19), p.193505-193505-3
Main Authors: He, P., Gao, J., Marinis, C. T., Parimi, P. V., Vittoria, C., Harris, V. G.
Format: Article
Language:English
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Summary:A tunable negative refractive index metamaterial and miniature phase shifter have been designed and fabricated in a microstrip configuration for applications in radio frequency integrated circuits. The metamaterial consists of plasmonic copper wires and yttrium iron garnet slabs having a low insertion loss of 5 dB at the center of the transmission band. The yttrium iron garnet material enables the magnetic field tuning of the negative refractive index in a dynamic frequency band from 7.0 to 11.0 GHz . The insertion phase can be tuned by 45° continuously by varying the bias field from 3.8 to 4.6 kOe at 9.0 GHz .
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3025303