General Approach for Scattered and Total Field Decomposition

Given our compositional domain:

• Incident field is known in absence of our computational domain
• Physical (total) field is sought in presence of our computational domain
• Radiation BC applies to the field generated by the objects of our computational domain (scattered field)
• Incident field might be known in the whole domain (scattered field description) or just on the surface ("space ports," total field description)
• HFSS Transient provides the total field. The fair comparison is to use a single frequency in the frequency domain and apply a harmonic excitation in the time domain with the same frequency.