کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7924703 | 1512496 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-performance broadband vortex beam generator using reflective Pancharatnam-Berry metasurface
ترجمه فارسی عنوان
ژنراتور پرتوی پهنای باند با استفاده از پانچاراتنام بری متشکل از بازتابنده
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Vortex beam generators, especially for broadband working ones, are essential in recent communication systems, since it is believed to be a key to improve the channel capacity efficiently. However, available vortex beam generators surfer from narrow bands, low efficiencies as well as complex configurations. In this paper, we propose an ultra-broadband reflective Pancharatnam-Berry metasurface to generate the vortex beams within 12-18Â GHz. The metasurface consists of 20Ã20 single-layered rotated reflective elements A Ku-band Archimedes spiral antenna is placed at the focal point of the PB metasurface as a feed source which is used to emit a right-handed circularly polarized wave. Then, the metasurface is fabricated, simulated, and measured. Numerical and experimental results coincided well, indicating that the proposed vortex beam generator demonstrated several improvements, including wideband working (12-18Â GHz), high efficiency (75.76%), and simple fabrication. Our findings open up a new avenue for the design of high-performance broadband vortex beam generators.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 427, 15 November 2018, Pages 101-106
Journal: Optics Communications - Volume 427, 15 November 2018, Pages 101-106
نویسندگان
Yuzhou Ran, Jiangang Liang, Tong Cai, Haipeng Li,