Scattering of Electromagnetic Waves by a Periodic Surface with Arbitrary Profile
Interim scientific rept.
MICHIGAN UNIV ANN ARBOR RADIATION LAB
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Numerical procedures are developed for the digital solution of the integral equations for the current induced on a perfectly conducting, two- dimensional periodic surface of arbitrary profile when a plane electromagnetic wave is incident. By using Floquets theorem the range of integration is reduced to a single period, and special summation techniques consisting of a Poisson summation and the subtraction of the dc term are used to improve the convergence of the infinite series representation of the Greens function. The integral equations are then solved numerically using the moment method and an interpolation scheme. Data are obtained for both the surface and far fields for a variety of sinusoidal, full-wave rectified, inverted full-wave rectified and triangular profiles for plane waves of either polarization at oblique as well as normal incidence, and the results are compared with the predictions of physical optics.
- Radiofrequency Wave Propagation