Reducing the Time Steps of FDTD Predictions of High-Q Cavities
Finite-difference time-domain (FDTD) method is an effective tool for shielding effectiveness analysis. But due to the high Q of the cavity considered, the conventional second-order FDTD method requires a very large number of time steps for a pulse excitation to decay to a value that is sufficiently close to zero for accurate Fourier transformation of the time-domain fields into the frequency domain. This paper demonstrates the long FDTD time steps for generating accurate frequency domain parameters can be reduced by introducing an infinite ground plane at the bottom of the enclosure. The ground plane has no effect on the shielding effectiveness, but can improve the calculation efficiency. Compared with the method of introducing of an artificial loss into the solution space, this method has much higher accuracy, which is validated by numerical examples.
Juan Chen Jianguo Wang
School of Electronic and Information Engineering,Xian Jiaotong University,Xian 710049,China School of Electronic and Information Engineering,Xian Jiaotong University,Xian 710049,China;Northw
国际会议
Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)
杭州
英文
1-3
2008-03-24（万方平台首次上网日期，不代表论文的发表时间）