Title :
A comparison of some radiation boundary conditions for differential equation calculations of scattering
Author_Institution :
Rockwell Int. Sci. Center, Thousand Oaks, CA, USA
Abstract :
An approximate boundary condition is necessary to close the computational grid for a differential-equation-based solution (either in the frequency or time domain) of an electromagnetic scattering problem. While the asymptotic form for r to infinity is well-known, it is not sufficient for large problems. For efficiency, one needs to find higher-order boundary conditions that allow the computational grid to be terminated as close to the scatterer as possible. The author discusses the two-dimensional, frequency-domain case in detail. However, the results for three dimensions and/or the time domain are quite similar.<>
Keywords :
boundary-value problems; differential equations; electromagnetic wave scattering; 2D frequency-domain; 3D; EM wave scattering; differential equation calculations; higher-order boundary conditions; radiation boundary conditions; time domain; Boundary conditions; Canning; Convergence; Differential equations; Electromagnetic scattering; Frequency domain analysis; Geometry; Grid computing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94180
