摘要
针对舰载多天线系统电磁兼容性(EMC)分析计算量大、耗时过长问题,提出了自动分层的多层快速多极子方法(MLFMA)。采用BiCGStab(l)结合近场预条件方法进行求解,进一步提高了MLFMA的综合效率。为了分析天线间的近场耦合特性,运用微波网络理论结合互易定理给出了任意天线间的隔离度表达式。计算并分析了尺度与真实尺寸相当的某舰船模型上多根超短波天线的辐射方向图和天线间的隔离度。数值结果表明算法准确有效,并且对于电大运载平台中天线布局优化具有一定的指导意义。
In order to solve the electromagnetic compatibility （EMC） problems of multiple antennas mounted on shipborne platforms, the multilevel fast multipole algorithm （MLFMA） with adaptive number of levels is implemented. BiCGStab（ l ） combined with the near-field preconditioner is adopted as the solver and improves greatly the efficiency of the MLFMA. For the analysis of the coupling between antennas, the definition of arbitrary isolation between antennas is put forward according to the microwave network theory with the reciprocity theorem considered. The radiation pattern and the isolation results for the ultra-shortwave antennas mounted on a ful-scale ship model are obtained and discussed, which can give significant instructions to the platform-mounted antennas design.
出处
《电波科学学报》
EI
CSCD
北大核心
2008年第2期252-256,283,共6页
Chinese Journal of Radio Science
基金
国防支撑技术项目基金资助(41501100114)
