http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
An Improved Split-Step Method in Scaling Function Based MRTD
Jaejong Ryu,Wuseong Lee,Hachul Kim,Hyunchul Choi IEEE 2010 IEEE microwave and wireless components letters Vol.20 No.4
<P>A split-step method with four sub-steps is applied to the multiresolution time-domain scheme and combined with the dispersion-error control parameters. From the discussed numerical dispersion, it is obvious that the phase velocity an- isotropic error and absolute error of the introduced method are much lower than alternating direction implicit and the original split-step MRTD method. The results show that this method can use three times the time step of the original SS-MRTD method.</P>
Jaejong Ryu,Wuseong Lee,Hachul Kim,Hyunchul Choi 한국전자파학회JEES 2009 Journal of Electromagnetic Engineering and Science Vol.9 No.4
A three-dimensional locally one-dimensional multiresolution time-domain(LOD-MRTD) method is introduced and unconditional stability is proved analytically. The updating formulations have fewer terms on the right-hand side than those of an alternating direction implicit MRTD(ADI-MRTD). The validation of the method is presented using the resonance frequency problem of an empty cavity. The reduction of the numerical dispersion technique is also combined with the proposed method. The numerical examples show that the combined method can improve the accuracy significantly.
Reduction of Numerical Dispersion Error in 3-D ADI-MRTD Method With the Coarse Mesh
Jaejong Ryu,Wuseong Lee,Jugab Lee,Yeonkwan Moon,Hachul Kim,Hyunchul Choi IEEE 2009 IEEE microwave and wireless components letters Vol.19 No.8
<P>In order to reduce the numerical dispersion in three-dimensional alternating-direction implicit multiresolution time-domain scheme, a correction procedure is introduced. The numerical dispersion relation and the anisotropic correction parameters are considered. The reduction of the numerical dispersion is investigated for single frequency problem and wide-band simulation with the coarse mesh.</P>