On the spatial bandwidth of scattered fields
- 1 December 1987
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 35 (12) , 1445-1455
- https://doi.org/10.1109/tap.1987.1144024
Abstract
It is shown that the scattered fields are almost space bandlimited functions. The effective bandwidthWis introduced and evaluated for a very general scattering system, as well as the error made using functions bandlimited tow > Wfor representing the scattered field. The effective bandwidth is very simply related to the maximum dimension of the scattering system; the error drops to negligible values for modest increases ofwcompared toW, in the case of large scatterers. Important consequences of the above general results are finally stressed.Keywords
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