[天线]A novel scheme for the solution of the time-domain integral equations of electromagnetics

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 52, NO. 1, JANUARY 2004 283 S\O6B1<:  
A Novel Scheme for the Solution of the Time-Domain SRx `m,535  
Integral Equations of Electromagnetics *S@0o6v  
Daniel S.Weile, Member, IEEE, Greeshma Pisharody, Student Member, IEEE, Nan-Wei Chen, Student Member, IEEE, y~\K~qjd  
Balasubramaniam Shanker, Senior Member, IEEE, and Eric Michielssen, Fellow, IEEE Z*(lg$A9M  
Abstract—A new method to numerically solve time-domain U4@W{P02  
integral equations pertinent to electromagnetic surface scattering ?krgZ;Jj  
phenomena is presented. The method uses approximate prolate +#!! 'XP  
spheroidal wave functions and standard Rao–Wilton–Glisson kGSB6  
basis functions to effect the temporal and spatial discretization *T'>-nm]  
of the integral equations, respectively. Because the temporal lfp'D+#p{  
basis functions are noncausal, an extrapolation scheme is used to .5x+FHu7  
construct a system of equations that can be solved by marching 0jN?5j  
on in time. Numerical results show that the proposed method is h^KLqPBt{  
stable and that its solutions converge exponentially fast with the 13nXvYo'  
time-bandwidth product of the approximate prolate spheroidal "m:4e`_dz  
wave functions to results from a frequency-domain met .. i@M^9|Gh  
m*S[oy&  

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