基于毫米波频段的超宽带水基吸波器  

Ultra-Wideb and Water-Based Wave Absorber Based on Millimeter Wave Band

作　　者：舒想 陈紫涵 沈钊阳 Shu Xiang;Chen Zihan;Shen Zhaoyang(Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering,China Three GorgesUniversity,Yichang 443002,Hubei,China;College of Computer and Information Technology,China Three Gorges University,Yichang 443002,Hubei,China)

机构地区：[1]三峡大学水电工程智能视觉监测湖北省重点实验室,湖北宜昌443002 [2]三峡大学计算机与信息学院,湖北宜昌443002

出　　处：《应用激光》2024年第12期158-164,共7页Applied Laser

基　　金：湖北省教育厅科学研究计划指导性项目(B2021311)。

摘　　要：研究一种超宽带水基超材料吸波器,其单元结构由外壳、水层和金属背板组成,其中,外壳由光敏树脂制成,水层由一个“X”字形体和4个球体组合而成。针对毫米波频段进行了仿真,当电磁波垂直入射至该结构时,能够对22.7~63.9 GHz的电磁波实现90.0%以上的吸收,更是在39.5~44.4 GHz范围内几乎达到了完美吸收。该吸波器具有偏振不敏感和广角度入射的特性。与此同时,提出了等效介质理论,对该吸波材料的等效阻抗进行了分析。基于频段的特殊性,提出的超宽带水基超材料吸波器在毫米波通信领域具有潜在应用价值。This study investigates and analyzes an ultra-wideband water-based metamaterial absorber.The unit cell consists of a shell,a water layer,and a metal backplane,with the shell fabricated from photosensitive resin and the water layer comprising an‘X’shaped body and four spheres.Designed for the millimeter wave band,simulation results indicate that the absorber's performance exceeds 90% absorption within the frequency range of 22.7 GHz to 63.9 GHz when illuminated by vertically incident electromagnetic waves.Perfect absorption is achieved within the frequency range of 39.5 GHz to 44.4 GHz.The absorber exhibits polarization insensitivity and wide-angle incidence characteristics.Additionally,equivalent dielectric theory is applied to analyze the equivalent impedance of the absorbing material.Given the unique absorption frequency band,the proposed ultrawideband water-based metamaterial absorber holds significant potential for applications in millimeter wave communication systems.

关 键 词：超宽带 毫米波 水基超材料 吸波器 

分 类 号：O441.3[理学—电磁学]