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Figure 11.29. Backscattered RCS for a perfectly conducting triangular
flat plate,
and
.
a
=
20
cm
b
=
75
cm
11.6. Scattering From a Dielectric-Capped Wedge
The geometry of a dielectric-capped wedge is shown in
Fig. 11.30.
It is
required to find to the field expressions for the problem of scattering by a 2-D
perfect electric conducting (PEC) wedge capped with a dielectric cylinder.
Using the cylindrical coordinates system, the excitation due to an electric line
current of complex amplitude
results in TM
z
incident
I
0
located at
(
ρ
0
ϕ
0
,
)
field with the electric field expression given by
ωȺ
()
(
)
2
(11.68)
i
z
EI
=−
0
Hk
ρ ρ
e
0
0
4
The problem is divided into three regions, I, II, and III shown in Fig. 11.30.
The field expressions may be assumed to take the following forms:
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