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Microwave-Frequency, Negative-Index Metamaterial Designs Based on Degenerate Dielectric Resonators

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5 Author(s)
L. I. Basilio ; Electromagnetic Theory, Sandia National Laboratories, Albuquerque, USA ; L. K. Warne ; W. L. Langston ; W. A. Johnson
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In this letter, three different negative-index metamaterial designs based on single-particle degenerate dielectric resonators are presented. The resonator designs are realized by introducing high-contrast perturbations to the cavity geometry so as to bring the lowest-order electric and magnetic cavity resonances into frequency alignment. Since negative-index behavior can be demonstrated with only a single-type resonator (as opposed to dual-particle), these types of degenerate dielectric resonators potentially offer a size advantage so that the structure is less apt to fall outside the effective-medium region.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:11 )