A parametric study of scattering from slots

The author investigates the effect of the relative magnitude of incident radiation, slot width, and the geometry and dimensions of the cavity or duct backing the slot on scattering from a two-dimensional slot. A two-dimensional formulation has been chosen for several reasons. The first is that the number of independent parameters that can be varied is reduced, allowing determinations of the relative effect of the variations to be more easily made. Second, the problem is more easily formulated and solved in two dimensions; fewer variables are required. Finally, it is expected that the general results of the two-dimensional problem will be applicable to the more general three-dimensional one, and in many cases, the two-dimensional formulation is a reasonable approximation in its own right. Results are presented for several geometries and show the effect of varying slot width, duct height, frequency, etc. on the scattered radiation. A comparison of the magnitude of the scattered radiation from the slotted plate, with and without a duct backing it, is made, showing that for some combination of parameters, the duct acts to reduce or quiet the scattered radiation.<>