Diffraction of electromagnetic waves by plane metallic gratings

Plane metallic gratings of finite numbers of strips

“…First, the method of moments is employed to calculate the induced surface current which is then used to compute the scattered far electric field using NUMERICAL RESULTS AND CONCLUSION A self-complementary structure having parameters: d = 1.5 X, a = 0.75 A, previously studied [l], [3], was considered under normal incidence. The number of strips in the structure was gradually -X 4 -I 1 Fig.…”

Invited paper Wave reactance of thin planar strip gratings

“…A number of methods have in the past been employed to solve problems of this type: point-matching (Ott et al 1967, Kalhor 1978, the Green's function method (Kalhor 1980), variational method (Meecham 1956, Primich 1957, Kalikstein and Sepulveda 1981 and integral-equation approximate solutions (Miles 1949), among others. The last two methods will be described and applied to strip gratings in later sections.…”

Rigorous method to solute the slit diffraction

“…[1][2][3][4][5][6][7][8][9][10] To treat the general problem of the diffraction, different approximate methods such as the scalar Kirchhoff theory 11 or the Rayleigh-Sommerfeld theory 12,13 have been proposed. However, it is known that these scalar theories are not accurate in the vectorial regime given by k/l !…”