Abstract
A surface integral equation formulation is derived for low-frequency scattering from a composite object. This formulation allows those algorithms for finding loop-tree basis on simple surfaces to be applied to the complicated interfaces of a composite object. By including the residue term in the K operator, the present formulation induces the interface boundary conditions automatically, and the resultant matrix equation can be solved directly without using the O(N2) number-of-unknown-reduction scheme. Numerical results validate that the algorithm is stable even at extremely low frequencies and for closely spaced structures.
Original language | English (US) |
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Pages (from-to) | 2837-2844 |
Number of pages | 8 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 51 |
Issue number | 10 II |
DOIs | |
State | Published - Oct 2003 |
Externally published | Yes |
Keywords
- Chang
- Composite object
- Harrington
- Loop-star
- Loop-tree
- Low frequency
- Miller
- Poggio
- Tsai formulation (PMCHWT)
- Wu
ASJC Scopus subject areas
- Electrical and Electronic Engineering