ABSTRACT
This chapter is concerned with electric-field area integral equations for 2D scattering problems. These methods follow closely the physical principle that the material of the scatterer is polarized due to an incident field, and the incident field at a local position is the sum of an external field and radiation from all polarized parts of the scatterer itself. The polarization at any position inside the scatterer is thus partly driven by the fields originating from polarization currents at all positions inside the scatterer, and thus all parts of the scatterer are coupled. (a) Schematic of a scatterer in a homogeneous background being illuminated by a plane wave. (b) Schematic of a scatterer placed on a layered reference structure being illuminated by a plane wave. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781351260206/4bca3869-f413-46d7-8ef0-9a5b65c1eb68/content/fig5_1.tif"/>
