TE diffraction of a Gaussian beam wave by finite periodic strips on a grounded dielectric

Wide-band/angle Blazed Surfaces using Multiple Coupled Blazing Resonances

“…Planar and printed gratings, such as those shown in Fig. 1c,d have also been shown to blaze efficiently 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 . Blazed gratings have been used from microwaves to optics, and in different applications such as Littrow mounts 6 and external cavity lasers, frequency scanning antenna reflectors 38 39 40 41 42 , and Radar Cross Section (RCS) reduction surfaces 19 20 21 , to name a few.…”

“…Blazed gratings 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 can reflect an oblique incident wave back in the direction of incidence with low or even zero specular scattering, unlike mirrors and metal plates. The scattering of the incident wave into diffraction orders is dictated by the grating periodicity, which is in the order of the free-space wavelength for blazing.…”

“…To this end we first study a single resonant strip 37 in the unit-cell as shown in Fig. 1d and e. In previous studies on strip loaded grounded dielectric gratings 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 , the strip width was large (typically around half the cell size) and held constant, while other parameters such as the dielectric thickness was adjusted to observe a blazing phenomenon. In this work, we utilize a standard single layer microwave substrate with a given fixed thickness, much thinner than previous works.…”