The use of 'near-self' impedance elements in the MM solution for scattering from composite bodies with thin features

To demonstrate the calculation of scattered fields from bodies with thin features, near-self impedance element, calculation has been incorporated into the two-dimensional MM (moment method) program of P.M. Goggans and T.H. Shumpert (1990). This MM program solves the combined-field integral-equation for composite bodies using linear zones with pulse current expansion functions and point matching (delta function testing). The bistatic RCS (radar cross section) of a dielectric-coated conducting cylinder for a TE-polarized incident wave is plotted. The calculated RCS is plotted with and without the use of near-self impedance elements. Near exact agreement with the series solution is obtained by use of the near-self impedance elements.<>