Wideband chiral metamaterial for polarization conversion based on helical-type inclusions
Materials with a high electromagnetic activity usually present a strong resonant response that produces extreme values for the constitutive parameters, but in a narrow frequency range. Here, a chiral material composed by four helical-like resonators, as the unit cell, able to produce high rotatory d...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2023 |
| País: | España |
| Recursos: | Universidad de Cantabria (UC) |
| Repositório: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Idioma: | inglês |
| OAI Identifier: | oai:repositorio.unican.es:10902/30861 |
| Acesso em linha: | https://hdl.handle.net/10902/30861 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Chirality Metamaterial (MM) Polarization |
| Resumo: | Materials with a high electromagnetic activity usually present a strong resonant response that produces extreme values for the constitutive parameters, but in a narrow frequency range. Here, a chiral material composed by four helical-like resonators, as the unit cell, able to produce high rotatory dispersion and low circular dichroism in a wide frequency band is presented. The transmission and reflection coefficients of a thin slab of such material have been determined using a free-wave experimental setup and numerical simulations. The experimental results show a cross-polarization conversion in the transmission mode for linearly polarized incident waves in a 2-GHz bandwidth centered at 10 GHz and a polarization conversion ratio larger than 0.97. |
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