Antenna with adaptively focusing on near-field target
نویسندگان
چکیده
منابع مشابه
Near-field focusing with optical phase antennas.
We investigate the near-field focusing properties of three-dimensional phase antennas consisting of concentric rings designed to have source and image spots separated by several microns from the lens. Tight focal spots are obtained for silicon or gold rings patterned in a silica matrix. We analyze in detail the dependence of the performance of these lenses on geometrical parameters such as the ...
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ژورنال
عنوان ژورنال: Acta Physica Sinica
سال: 2020
ISSN: 1000-3290
DOI: 10.7498/aps.69.20201525