Backscattering Cross Section of a Dielectric Elliptical Cylinder*

Abstract

Numerical results are given for the backscattering cross section of a dielectric elliptical cylinder. Computations are carried out using the exact solutions in terms of Mathieu functions. Both polarizations of the incident wave are considered: one with the incident electric vector in the axial direction and the other with the incident magnetic vector in the axial direction. The parameters considered are: k02q2=0.004, 0.4, 4.0, 8.0, 12.0, 16.0, 20.0; 0≤qk0 cosξ0<6.5; ∊1/∊0=2.0; 0≤θ≤90°. k0 is the free-space wavenumber, q is the semifocal length, q cosξ0 is the length of the semimajor axis, θ is the angle of incidence with respect to the major axis, and ∊1/∊0 is the relative dielectric constant of the cylinder.