Abstract
An exact solution is obtained for the scatter of an acoustic plane wave from an infinite surface constructed from a doubly periodic array of infinite and parallel elliptical semicylinders. Neumann boundary conditions are imposed and the Helmholtz‐Kirchhoff integral used to calculate the scattered pressure field. Fredholm integral equations of the first and second kind are used to calculate the surface field. Numerical calculations are performed to determine the effects of geometric parameters on the scattered pressure field and the dependence of the surface field on the type of Fredholm integral equation used. Results are also compared with those for scattering from a sinusoidal surface.
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