Optimal boundary impedance for the minimization of reflection: (I) Asymptotic solutions by the geometrical optics method

In the design of surfaces which absorb waves, the impedance boundary condition is used as an effective means of diminishing the reflection. In this paper, we use the geometrical optics method to approximate the optimal impedance value which minimizes the reflected field for the scalar wave equation with a monochromatic source. Our treatment yields good results for optimal impedance in the asymptoticity region of the geometrical optics solution. Copyright © 1985 John Wiley & Sons, Ltd.

Optimal boundary impedance for the minimization of reflection: (I) Asymptotic solutions by the geometrical optics method Academic Article