%A Qing-Tao Yu(余庆陶), Yuan-Song Zeng(曾元松), and Guo-Jia Ma(马国佳) %T A radar-infrared compatible broadband absorbing surface: Design and analysis %0 Journal Article %D 2021 %J Chin. Phys. B %R 10.1088/1674-1056/abea7f %P 78402-078402 %V 30 %N 7 %U {https://cpb.iphy.ac.cn/CN/abstract/article_123729.shtml} %8 2021-06-22 %X A radar-infrared compatible stealth surface is designed and analyzed. Without modifying the radar absorbing material (RAM), the design can theoretically achieve radar-infrared compatibility and broadband radar absorption through surface patterns and structures. A transmission-line-based model (TLM) is developed to analyze the radar absorbing performance of the surface. Optimization of the structure geometries is conducted aiming to maximize the -10 dB absorption bandwidth in 2-18 GHz. Surface with optimized structure geometries exhibits a superior absorption bandwidth, more than twice the bandwidth of the original 1.5 mm RAM slab, while maintaining a relatively low infrared emissivity.