中国物理B ›› 2022, Vol. 31 ›› Issue (2): 24211-024211.doi: 10.1088/1674-1056/ac1fdd
Kun Liao(廖昆)1, Shining Sun(孙世宁)2, Xinyuan Zheng(郑昕原)1, Xianxian Shao(邵纤纤)3, Xiangkun Kong(孔祥鲲)1, and Shaobin Liu(刘少斌)1,†
Kun Liao(廖昆)1, Shining Sun(孙世宁)2, Xinyuan Zheng(郑昕原)1, Xianxian Shao(邵纤纤)3, Xiangkun Kong(孔祥鲲)1, and Shaobin Liu(刘少斌)1,†
摘要: A dual-passband single-polarized converter based on the band-stop frequency selective surface (FSS) with a low radar cross-section (RCS) is designed in this article. The unit cell of the proposed converter is formed by a polarization layer attached to the band-stop frequency selective surface. The simulation results reveal that the co-polarization reflection coefficients below -10 dB are achieved in 3.82-13.64 GHz with a 112.4% fractional bandwidth (the ratio of the signal bandwidth to the central frequency). Meanwhile, a polarization conversion band is realized from 8.14 GHz to 9.27 GHz with a polarization conversion ratio which is over 80%. Moreover, the 1 dB transmission window is obtained in two non-adjacent bands of 3.42-7.02 GHz and 10.04-13.91 GHz corresponding to the relative bandwidths of 68.9% and 32.3%, respectively. Furthermore, the radar cross-section of the designed structure can be reduced in the wideband from 2.28 GHz to 14 GHz, and the 10 dB RCS reduction in the range of 4.10-13.35 GHz is achieved. In addition, the equivalent circuit model of this converter is established, and the simulation results of the Advanced Design System (ADS) match well with those of CST Microwave Studio (CST). The archetype of the designed converter is manufactured and measured. The experiment results match the simulation results well, which proves the reliability of the simulation results.
中图分类号: (Wave propagation, transmission and absorption)