A metasurface composed of 3-bit coding linear polarization conversion elements and its application to RCS reduction of patch antenna

被引：14

作者：

Kong, Xiangkun ^{[1
,3
]}

Wang, Qi ^{[1
,2
]}

Jiang, Shunliu ^{[1
]}

Kong, Lingqi ^{[1
]}

Yuan, Jing ^{[1
]}

Yan, Xiangxi ^{[1
]}

Wang, Xuemeng ^{[1
]}

Zhao, Xing ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Key Lab Radar Imaging & Microwave Photon, Nanjing 210016, Peoples R China

[2] Nanjing Elect Devices Inst, Nanjing 210016, Peoples R China

[3] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China

来源：

SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期

基金：

中国国家自然科学基金;

关键词：

BROAD-BAND; ARRAY;

D O I：

10.1038/s41598-020-74976-z

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：

In this paper, a metasurface composed of 3-bit coding linear polarization conversion elements and its application to RCS reduction of the patch antenna is intensively studied. At first, 3-bit coding metasurface are constructed by a sequence of eight coded unit cells, which have a similar cross-polarized reflected amplitude response and gradient reflected phase responses covering 0-2 pi, respectively. Equivalent circuit models of these unit cells are created to describe their electrical behavior for the two linear incident polarizations at the same time. Then, a patch antenna is integrated on the 3-bit metasurface, of which the elements are placed with a 2-dimensional linear coding sequence. The metal square ring is set around the patch antenna to protect it from the disturbance of metasurface. Both the simulation and experiment results demonstrate that the designed metasurface can primarily reduce the antenna RCS at a broadband, while the antenna performances are not degraded significantly.

引用

页数：10

共 27 条

[1] Ultrathin Single Layer Metasurfaces with Ultra-Wideband Operation for Both Transmission and Reflection [J].