Increasing the performance of the coupled-dipole approximation: A spectral approach

We show that it is possible to increase the performance of the coupled-dipole approximation (CDA) for scattering by using concepts from the sampling theory. In standard CDA, the source in each discretized cell is represented by a point dipole and the corresponding scattered field given by Green's tensor. In the present approach, the source has a certain spatial extension, and the corresponding Green's tensor must be redefined. We derive these so-called filtered Green's tensors for one-dimensional (1-D), two-dimensional (2-D), and three-dimensional (3-D) systems, which forms the basis of our new scheme: the filtered coupled-dipole technique (FCD).


Published in:
Ieee Transactions On Antennas And Propagation, 46, 1126-1137
Year:
1998
Publisher:
Institute of Electrical and Electronics Engineers
ISSN:
0018-926X
Keywords:
Laboratories:




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