Low-loss left-handed gammadion-fishnet chiral metamaterials
Low losses Left handed gammadion–fishnet chiral metamaterials
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Fernández Fernández, Óscar; Gómez Gómez, Álvaro; Vegas García, Ángel; Molina Cuberos, Gregorio José; García Collado, Ángel JoaquínFecha
2019-10Derechos
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Publicado en
IEEE Antennas and Wireless Propagation Letters, 2019, 18(10), 2041-2045
Editorial
Institute of Electrical and Electronics Engineers Inc.
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Palabras clave
Chiral
Fishnet
Metamaterial
Low losses
Refractive index
Resumen/Abstract
Negative refraction has many potential applications in the information and communications technology field. However, the high losses of most negative refraction materials prevent the use of this novel property in the implementation of practical devices in the HF range. In an attempt to overcome this inconvenience, we present two gammadion-fishnet chiral metamaterial structures, constituted by the combination of a lossy chiral metamaterial and different fishnet structures. The electromagnetic characterization of the proposed metamaterials provides a larger bandwidth with negative refraction as well as lower losses when compared with the initial structures. The results were obtained by using both numerical and experimental data, which support our designs.
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