PLANE-WAVE DIFFRACTION BY A REACTIVE STEP

Plane wave diffraction by two half-planes joined by a step is studied in the case where each half-plane and the step are characterized by di fferent surface reactances. The diffraction problem is first reduced t o a modified Wiener-Hopf equation of the second kind whose solution co ntains an infinite set of constants satisfying an infinite system of l inear algebraic equations. Numerical solution of this system is obtain ed for various values of the surface reactances and the height of the step wherefrom is studied the effects of these parameters on the diffr action phenomenon. (C) 1997 Elsevier Science Ltd.