微波暗室用角椎形吸波体及其吸波特性仿真分析  

Optimization of pyramid absorber for microwave anechoic chamber

作　　者：邓文谦 莫锦军 DENG Wen-qian;MO Jin-jun(School of Aeronautics and Astronautics,Central South University,Changsha 410083,China;School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]中南大学航空航天学院,湖南长沙410000 [2]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《磁性材料及器件》2021年第3期52-56,共5页Journal of Magnetic Materials and Devices

摘　　要：为进一步提高微波暗室吸波材料的吸收性能,研究了不同外形结构的发泡聚丙烯(EPP)基吸波体。在分析比较传统角椎形和圆锥形吸波体吸波性能的基础上,提出了一种扭曲椎形吸波体结构,仿真分析了不同扭曲角的扭曲椎形吸波体在不同频率、不同入射角下的吸波性能。研究发现,综合考虑大角度斜入射情况,扭转角度为20°的扭曲椎形吸波体在20~40 GHz频率范围内可以获得比无扭曲的传统角椎形吸波体更好的吸波能力。To further improve the absorption performance of microwave anechoic chamber absorbing materials,foamed polypropylene(EPP)-based absorbers with different shapes were studied.After analysis and comparison of the absorbing performance of traditional square pyramid and conical shape absorbers,a twisted pyramid absorber structure is proposed.The reflectivity simulation of the twisted pyramid absorbers with different twist angles is performed at different frequencies and different incident angles.The results show that,considering the large-angle oblique incidence,the twisted pyramid absorber with a twist angle of 20°can achieve better absorbing ability than the traditional shape absorber in the frequency range of 20-40 GHz.

关 键 词：微波暗室 发泡聚丙烯 扭曲椎形吸波体 反射率 

分 类 号：TM25[一般工业技术—材料科学与工程] O242.1[电气工程—电工理论与新技术]