GO-Based Equivalent Current Formulation for Scattering from Circular Conducting Cylinders and Strips

For the high frequency regime, physical optics (PO) is often used to formulate the scattering field from conducting bodies [1] , [2] . The conventional PO utilizes the induced electric current determined approximately by the incident magnetic field on the illuminated surface of the scattering bodies. However, this method faces difficulties when treating penetrable objects because it is not clear how to define the illuminated surface due to the penetration of the original incident wave into the scattering objects.