Dual-polarized lens antenna based on multimode metasurfaces

被引：6
作者：
Wang, Hao-Fang [1 ,2 ]
Wang, Zheng-Bin [1 ,2 ]
Cheng, Yong [1 ]
Zhang, Ye-Rong [1 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Jiangsu, Peoples R China
[2] State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
来源：
CHINESE PHYSICS B | 2018年 / 27卷 / 11期
关键词：
dual polarization; metasurfaces; lens antenna; multimode resonance; low-profile; TRANSMITARRAY; SURFACES; DESIGN;
D O I：
10.1088/1674-1056/27/11/118401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a dual-polarized lens antenna system based on isotropic metasurfaces for 12 GHz applications. The metasurface lens is composed of subwavelength unit cells (0.24 lambda(0)) with metallic strips etched on the top and bottom sides of the unit cell, and a cross-slots metallic layer in the middle that serves as the ground. The multimode resonance in the unit cell can realize a large phase shift (covering 0 degrees-360 degrees), and the total transmission efficiency of the lens is above 80%. The feed antenna at the focal point of the lens is a broadband dual-polarized microstrip antenna. Both the simulated and the measured results demonstrate that the dual-polarized lens antenna system can realize a gain of more than 16.1 dB, and an input port isolation of more than 25.0 dB.
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页数：7
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