摘要
利用非均匀传输线模拟了多层平板屏蔽体,并采用矩阵原理得到了屏蔽体的屏蔽效能.由于非均匀传输线本身的非均匀性,用它模拟多层屏蔽体不需再分析板间的多次来回反射,大大简化了计算过程;矩阵表达有利于计算机运算.最后给出了可用于计算任意层平板屏蔽体屏蔽效能的一般公式,用其计算了双层板和4层板2种特例的屏蔽效能,与已有的精确公式计算结果完全吻合,而过程较之简单.
A nonuniform transmission line is modeled for multilayer plates and an effective shielding is obtained by matrix theory. Owing to discontinuity of nonuniform transmission line, it is suited for modeling multilayer plates regardless of re-reflection between plates. Matrix presentation can benefit calculation using programming. A general formula applicable to analyze arbitrary multiplayer plates shielding is proposed. Special cases of double and fourfold shield are investigated. The accuracy of this method has been validated by comparison to other analytical methods.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2008年第2期54-58,共5页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(50237040)
关键词
非均匀传输线
屏蔽效能
网络参量
矩阵原理
nonuniform transmission line
shielding effectiveness
network parameter
matrix theory
