【作者】 徐乾坤； 饶升林； 薛靖铠； 陈嘉豪； 陈星；

【Author】 Qian kun Xu;Sheng lin Rao;Jing kai Xue;Jia hao Chen;Xing Chen;Sichuan University;

【机构】 四川大学；

【摘要】 本文设计了一种2-bit双极化可重构智能超表面(RIS)。每种极化仅通过2个PIN二极管即可实现2-bit相位量化,显著简化了单元调控结构。通过采用曲流式相位延迟线和辐射贴片的矩形槽结构,超表面单元在双极化模式下分别实现了3.34～3.7 GHz(相对带宽10.22%)和3.4～3.86 GHz(相对带宽12.67%)的相位梯度带宽。基于该单元构建的8×8可重构反射阵列,在3.3～3.8 GHz频段内实现双极化独立调控,波束扫描范围达±50°,增益为9.83～13.65 dBi(对应孔径效率8.91%～24.21%),1-dB增益带宽达33.33%。更多还原

【Abstract】 A 2-bit dual-polarized reconfigurable intelligent surface(RIS) is designed in this paper.For each polarization,2-bit phase quantization(0°,90°,180°, 270°) is achieved using only two PIN diodes,which significantly simplifies the unit control structure.Through the adoption of meandering phase delay lines and rectangular slot structures on the radiating patch,phase gradient bandwidths of 3.34～3.7 GHz(10.22% relative bandwidth) and 3.4～3.86 GHz(12.67% relative bandwidth) are achieved by the metasurface unit for the two polarizations,respectively.Based on this unit,an 8×8 reconfigurable reflective array is constructed,with independent dual-polarization control realized within the 3.3～3.8 GHz frequency band and a beam scanning range of ±50°.The gain is found to range from 9.83 dBi to 13.65 dBi(corresponding to an aperture efficiency of 8.91 %～24.21 %),and a 1-dB gain bandwidth of 33.33% is achieved.更多还原