High-Efficiency Electromagnetic Wave Controlling with All-Dielectric Huygens’ Metasurfaces
Subwavelength dielectric blocks with varying thicknesses are introduced to realize 0∼2π phase change. A Huygens’ metasurface composed of such nonuniform building blocks is shown to efficiently refract normally incident waves in a broadband. According to the same physical mechanism, we fabricate an e...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/432095 |
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| Summary: | Subwavelength dielectric blocks with varying thicknesses are introduced to realize 0∼2π phase change. A Huygens’ metasurface composed of such nonuniform building blocks is shown to efficiently refract normally incident waves in a broadband. According to the same physical mechanism, we fabricate an electrically thin lens with concentric subwavelength dielectric blocks and integrate it with a patch antenna to form a three-dimensional (3D) ultra-low-profile lens antenna system. Full-wave simulation demonstrates the lens antenna’s excellent performances in high directivity, broadband, low loss, and low side-lobe levels. |
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| ISSN: | 1687-5869 1687-5877 |