L= p (plane wave incidence) n = 2 mpresents the angle of the wedge (2-n)n b) On the 'n' face qln = n7c For simplicity,~'s 2 . The reason is that for larger values of +', the geometry of the problem is symmetric and the mult could be deduœd. The cornputer code INÇEDGE.FOR was createû to cornpute and plot the surface current density Jp on the 'O' face and on the 'n' face of a wedge. The code is based on the equations listed above and henœ uses the generic formulation of the UTD diffraction coefficient. Several cases were plotteâ @ is in A). JO in Ahn is aie surface current density on the 'O' face and J, is the one on the 'n' face. Figure 3.1 depicts the half plane case (n=2) illuminated by a broadside incident TG plane wave (q'= 907. It is identical to the Sommerfeld solution graph in Figures 2.4 and 2.5. Figure 3.2 is the infinb plane case (n=l) illuminated by a incident TE2 plane wave (9'- 907. As expected, h m is no diffraction in this case and the graph reduœs to the geanetrical optic solution. Figures 3.3 and 3.4 are for wedge and angles d 45' and 90' mspectivaly. For these angles. diiffraction is existent and the solution is not exad.
Figure 3.5 was proâuœd to &eck the robustmms of the code. the incident angle of 1 3S00n a 90' virwlge Ieads to similar illumination of both faces. As expected. both current densities are the same. Figures 3.6 and 3.7 plot the current density on the surfaœ of a QOO wsdge for incidenœ angles of 60 O and O. P (almoet grazing incidence) reqmdvely. It is clear fmm the results obtainnsd that the UTD generic formulation d e producd the expected solutions fbr the Sommerfeld ca~e (n=2) and the non diffraction case (n=l). The created UT0 code is considered adequate to be used as a building block for more complex scatterer shapes.