High Frequency Asymptotics: The 2D Wedge Diffraction Problem

In this chapter, high frequency asymptotics (HFA) techniques are reviewed through a classical, canonical problem: EM wave scattering from a wedge shaped object with perfectly electrical conductor (PEC) boundaries. A MATLAB-based virtual diffraction tool WedgeGUI, using analytical exact as well as well-known HFA techniques, is also introduced. Mathematical equations of different models are included for both line source (LS) and plane wave (PW) illuminations. The PW models presented are exact by series summation, PO, PTD, UTD, and PE models.