船用VHF频段选择性吸波技术研究  

Study on Selective Absorbing Technology for Marine VHF Band

作　　者：杨伟[1] 金华标[1] 魏柳新 喻方平[1] 赵海鸥[1] 

机构地区：[1]武汉理工大学能源与动力工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2016年第2期357-359,364,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目资助(51109172)

摘　　要：为了保证船舶航行安全,船用电子设备应该满足电磁兼容要求.针对船舶甚高频(very high frequency,VHF)通信频段辐射限值的特殊要求,研究了吸波材料的吸波机理,利用三维电磁场仿真软件(CST),从铁氧体的相对介电常数、相对磁导率,以及吸波体的结构参数等方面,研究了铁氧体栅格状吸波体各参数对选择性吸波频率和吸波效果的影响.利用所得结论,设计了一种铁氧体栅格状吸波结构,并利用CST验证了该结构在VHF频段具有较好吸波效果.In order to ensure the safety of navigation,marine electronic equipment should satisfy the requirement of electromagnetic compatibility（EMC）.For the special requirements of marine very high frequency（VHF）communication band radiation limitation,the research on the absorbing mechanism of absorbing materials is carried out.By using the three dimensional electromagnetic field simulation software CST,this study investigates the effects of key factors of the ferrite grid electromagnetic wave absorber（such as relative dielectric constant,relative magnetic permeability and structural parameter）on the selective absorption band and absorption effectiveness.Based on the analysis,one ferrite grid electromagnetic wave absorber is designed and the shielding effectiveness at VHF communication band is proved by CST.

关 键 词：船用电子设备 电磁兼容 甚高频 吸波体 

分 类 号：U665.26[交通运输工程—船舶及航道工程]