OBLIQUE INCIDENCE PLANE WAVE SCATTERING FROM AN ...

272 Henin, Elsherbeni, and Al Sharkawy1510one cylinder91 cylinders52D / λ (dB)σ0-5-10-15-200 60 120 180 240 300 360(degrees)φFigure 6. The echo width results of a TM z plane wave incident onone cylinder of radius 0.4λ, ε r =4,θ i = 75, φ i = 0, represented by 91cylinders.1510one cylinder91 cylinders2D / λ (dB)σ50-5-100 60 120 180 240 300 360(degrees)φFigure 7. The echo width results of a TE z plane wave incident onone cylinder of radius 0.4λ, ε r =4,θ i = 45, φ i = 0, represented by 91cylinders.Figure 7 shows the echo width calculated from one cylinder ofradius 0.4λ, having relative permittivity ε r = 4, and excited by a TE zplane wave with incident angel θ i = 45 and φ i = 0. In this case,the results are not completely equivalent due to the presence of the φcomponent of the electric field. The field is affected by the shape of