Diffraction by impedance structures and higher order boundary conditions: A review

The first diffraction coefficients for impedance half planes and wedges were presented by Senior and Maliuzhinets. Uniform versions of these were later developed by Volakis and Tiberio et.al. making them useful for computational toolsets. For the latter, an important development was the introduction of simplified analytical expressions for the associated split function and Maliuzhinets integrals, allowing for quick evaluation of the diffraction coefficients.