摘要
基于传输线等效方法给出了包含双负、单负和双正材料的任意多层结构的传输系数和反射系数计算公式;研究了双负材料对实心、双层和A夹层等天线罩壁形式的传输特性的影响规律,并分析了单负材料的传输特性和双负材料的透镜效应。结果表明:双正与双负混合双层板和A夹层板在参数选择恰当时可达到(准)理想匹配状态,双负材料电磁参数的虚部为正时具有透波增强特性。
To design a radome including double negative （DNG） materials, the transmission characteristics of multi- layer radome walls must be studied in advance. Formulations for transmission and reflection coefficients of muhilayer walls including double positive （DPS）, single negative and DNG materials are derived based on equivalent transmission line model and validated by numerical examples. Transmission characteristics of solid, double-layer and A-sandwich walls are analyzed. It is found that DPS and DNG hybrid muhilayer walls can be perfectly matched ones if their electromagnetic parameters are chosen carefully to meet a certain condition, and that the transmission coefficients of radome walls including DNG materials can be more than unity if the lens effects of DNG materials are properly utilized.
出处
《微波学报》
CSCD
北大核心
2008年第4期1-4,共4页
Journal of Microwaves
基金
航空科学基金资助(2006ZC53040)
关键词
双负材料
天线罩
多层结构
理想匹配结构
Double negative （DNG） materials, Radome, Multilayer walls, Perfectly matched walls
