A Novel Method to Analyze Electromagnetic Scattering of Complex Objects Export

@article{citeulike:3790391, abstract = {The finite-difference time-domain (FD-TD) method is proposed as a means of accurately computing electromagnetic scattering by arbitrary-shaped extremely complex metal or dielectric objects excited by an external plane wave. In the proposed method, one first uses the FD-TD method to compute the near total fields within a rectangular volume which fully encloses the object. Then, an electromagnetic-field equivalence principle is invoked at a virtual surface of this rectangular volume to transform the tangential near scattered fields to the far field. To verify the feasibility of this method, the surface currents, near scattered fields, far scattered fields, and radar cross section of two canonical two-dimensional objects are presented. For these cases, it is shown that the FD-TD method provides magnitude of current and field predictions which are within ± 2.5 percent and further phase values within ± 30 of values predicted by the method of moments ( MOM) at virtually every point including in shadow regions.}, author = {Umashankar, K. and Taflove, A.}, booktitle = {Electromagnetic Compatibility, IEEE Transactions on}, citeulike-article-id = {3790391}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/TEMC.1982.304054}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4091589}, doi = {10.1109/TEMC.1982.304054}, journal = {Electromagnetic Compatibility, IEEE Transactions on}, keywords = {fdtd, nfff}, number = {4}, pages = {397--405}, posted-at = {2008-12-15 23:15:22}, priority = {2}, title = {A Novel Method to Analyze Electromagnetic Scattering of Complex Objects}, url = {http://dx.doi.org/10.1109/TEMC.1982.304054}, volume = {EMC-24}, year = {1982} }

TY - JOUR ID - citeulike:3790391 L3 - citeulike-article-id:3790391 N2 - The finite-difference time-domain (FD-TD) method is proposed as a means of accurately computing electromagnetic scattering by arbitrary-shaped extremely complex metal or dielectric objects excited by an external plane wave. In the proposed method, one first uses the FD-TD method to compute the near total fields within a rectangular volume which fully encloses the object. Then, an electromagnetic-field equivalence principle is invoked at a virtual surface of this rectangular volume to transform the tangential near scattered fields to the far field. To verify the feasibility of this method, the surface currents, near scattered fields, far scattered fields, and radar cross section of two canonical two-dimensional objects are presented. For these cases, it is shown that the FD-TD method provides magnitude of current and field predictions which are within ± 2.5 percent and further phase values within ± 30 of values predicted by the method of moments ( MOM) at virtually every point including in shadow regions. IS - 4 JF - Electromagnetic Compatibility, IEEE Transactions on EP - 405 TI - A Novel Method to Analyze Electromagnetic Scattering of Complex Objects VL - EMC-24 T2 - Electromagnetic Compatibility, IEEE Transactions on SP - 397 KW - fdtd KW - nfff AU - Umashankar, K AU - Taflove, A PY - 1982/// UR - http://dx.doi.org/10.1109/TEMC.1982.304054 ER -