Scanning Characteristics of Metamirror Antennas with Subwavelength Focal Distance

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Abstract

We investigate beam scanning by lateral feed displacement in novel metasurface-based reflector antennas with extremely short focal distances. Electric field distributions of the waves reflected from the antenna are studied numerically and experimentally for defocusing angles up to 24°. The results show that despite their subwavelength focal distances, the scanning ability of the metamirrors is similar to that of short-focus reflectarrays (focal distance about several wavelengths). In addition to offering a possibility to realize extremely small focal distances, metamirror antennas are practically penetrable and invisible for any radiation outside of the operating frequency range.

Details

Original languageEnglish
Article number7467472
Pages (from-to)3656-3660
Number of pages5
JournalIEEE Transactions on Antennas and Propagation
Volume64
Issue number8
Publication statusPublished - 1 Aug 2016
MoE publication typeA1 Journal article-refereed

    Research areas

  • Beam scanning, feed displacement, metasurfaces, reflectarrays

ID: 7050163