Abstract
A method to reconstruct the source current from far‐field data in terms
of electric and magnetic point dipoles is described. The inverse problem
of solving the source from a known electromagnetic far‐field pattern is
carried out by a combination of genetic algorithm and local optimizers.
The source is modelled by a small number of point dipoles, the
locations, amplitudes and types of which are determined by minimizing
the difference between the field of the ensemble and the targeted
pattern. Uniqueness is ensured by limiting the number of dipoles
together with an appropriately weighted minimum energy condition. A
general description of the method applicable to antenna analysis and
synthesis is given and three examples of its practical use are
presented.
| Original language | English |
|---|---|
| Pages (from-to) | 335-350 |
| Journal | International Journal of Numerical Modelling: Electronic Networks, Devices and Fields |
| Volume | 22 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2009 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Inverse problems
- spherical wave expansion
- genetic algorithm
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Cite this
Koivisto, P., & Sten, J. (2009). Source localization using electric and magnetic point dipoles with modified genetic algorithm. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 22(4), 335-350. https://doi.org/10.1002/jnm.705