Millimeter-Wave Digital Coding Metasurfaces Based on Nematic Liquid Crystals

被引：42

作者：

Wang, Qiang ^{[1
]}

Zhang, Xin Ge ^{[1
]}

Tian, Han Wei ^{[1
]}

Jiang, Wei Xiang ^{[1
]}

Bao, Di ^{[1
]}

Jiang, Hao Lin ^{[1
]}

Luo, Zhang Jie ^{[1
]}

Wu, Li Ting ^{[1
]}

Cui, Tie Jun ^{[1
]}

机构：

[1] Southeast Univ, State Key Lab Millimeter Waves, Sch Informat Sci & Engn, Nanjing 210096, Peoples R China

来源：

ADVANCED THEORY AND SIMULATIONS | 2019年 / 2卷 / 12期

基金：

美国国家科学基金会;

关键词：

digital coding metasurfaces; millimeter wave; multifunctional metadevice; nematic liquid crystals; SCATTERING;

D O I：

10.1002/adts.201900141

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Metasurfaces provide an unprecedented capability in manipulating electromagnetic waves. In this work, a millimeter-wave (mmW) digital coding metasurface based on nematic liquid crystals (NLCs) is proposed and realized. By tuning the bias voltage loaded on the NLCs, the effective permittivity of the NLCs substrate is changed, thus providing different reflection phases. As a proof of concept, mmW beam splitting and mmW beam steering at mmW frequencies are demonstrated using a single metasurface platform. The experimental results are in good agreement with numerical simulations. The proposed digital coding metasurfaces have promising applications on planar mmW devices, such as multi-beam antennas, beam-scanning antennas, and wave controllers.

引用

页数：7

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