物理学报Issue(16)：1-7,7.DOI:10.7498/aps.63.164101
基于Newmark算法的任意磁化方向铁氧体电磁散射时域有限差分分析
Newmark algorithm in the finite-difference time-domain analysis of ferrite magnetized in an arbitrary direction
摘要
Abstract
The permeability tensor of saturated magnetized ferrite in frequency domain in the laboratory coordinate system is obtained by using the transformation matrix between the principal and laboratory system. The constitutive relation in time domain, which is a kind of second order differential equation, is derived by employing the transformation from the frequency domain jω to time domain ∂/∂t and solved by utilizing the Newmark algorithm. Consequently, a Newmark finite-difference time-domain method is proposed to deal with the problem of electromagnetic scattering by ferrite which is subjected to an external magnetic field in an arbitrary direction. The electromagnetic scattering by a magnetized ferrite layer and a sphere is simulated, and the numerical results demonstrate the validity and feasibility of the proposed method.关键词
Newmark方法/饱和磁化铁氧体/电磁散射/时域有限差分方法Key words
Newmark algorithm/saturated magnetized ferrite/electromagnetic scattering/finite-difference time-domain method引用本文复制引用
王飞,魏兵,杨谦,李林茜..基于Newmark算法的任意磁化方向铁氧体电磁散射时域有限差分分析[J].物理学报,2014,(16):1-7,7.基金项目
国家高技术研究发展计划(批准号:2012AA01A308)、国家自然科学基金重点项目(批准号:61231003)和中央高校基本科研业务费专项资金(批准号：JB140503)资助的课题.* Project supported by the National High Technology Research and Development Program of China (Grant No.2012AA01A308), the Key Program of the National Natural Science Foundation of China (Grant No.61231003), and the Fundamental Research Funds for the Central Universities (Grant No. JB140503) （批准号:2012AA01A308）
