Scattered and total field formulation pros and cons
Scattered field formulation
- Mostly for plane waves and analytical waves
- Cancellation errors when total field is weak
- Problems arise at infinite scatterers (slot in an infinite conducting plate)
- Near/far incident waves are not known in the whole region
Total field formulation
- Applicable for any incident pattern
- Cancellation errors when scattered field is weak
- Infinite scatterers can be treated
- Applicable to near/far field, too, since excitations have to be known on surfaces
- New, space port concept (decomposition differs from the literature).