【作者】 文星； 刘升； 唐万春； 聂守平；

【Author】 WEN xing;LIU sheng;TANG wanchun;NIE shouping;School of Physical and Technology, Nanjing Normal University of China;School of Electronic and Optical, Nanjing University of Science and Technology;

【机构】 南京师范大学物理科学与技术学院； 南京理工大学电子工程与光电技术学院；

【摘要】 本文推导将电磁场和集总元件相结合的Laguerre-FDTD公式,利用等效电流源代替集总元件的贡献,将该等效电流源加入到Laguerre多项式表达的麦克斯韦方程中。此方法克服了柯西稳定性条件限制,同时避免了时间项引起的数值色散误差。计算了包含集总元件的微带电路,计算结果与CN-FDTD进行了比较,显示了方法的正确性,此外在计算时间上体现了优势。更多还原

【Abstract】 The implementation of the lumped-element combined with the electromagnetic field by the Laguerre finite-difference time-domain(Laguerre-FDTD) algorithm has been presented in this paper. The lumped element component placed between two nodes is characterized by an equivalent current source, which can be added to the Maxwell‘ equations. Due to that the time variable can be eliminated by this method, the stability condition is no longer affected by the Courant–Friedrich–Levy condition and the time step. A microstrip circuit loaded by the lumped element component is calculated by this method and CN-FDTD. Good agreement can be seen on results obtained by those two methods. It can be also find that the computational time consumption by this method is two times less than that of the CN-FDTD.更多还原