Electromagnetic Scattering by an Aperiodic Strip Grating
Metallic gratings have long been used as frequency selective surfaces for applications ranging from beamsplitters to polarization filters. These gratings are generally modeled as an infinite array of evenly spaced metallic strips. Not only is it possible to truncate these structures, but it is also possible to vary the strip's width and spacing as a function of position along the grating surface. This variance, from the standard infinite periodic design, has the potential for beam steering, and other various directional reflecting devices. This thesis presents an electromagnetic scattering model for an approximate solution to the aperiodic grating problem. Various strip spacing and width profiles are analyzed for their scattering chacteristics as a function of the observation angle. In addition, the case of a finite periodic grating is compared to published results in order to verify the analytical approach.
Master of Science (M.S.)
College of Engineering
Electrical Engineering and Communication Sciences
Length of Campus-only Access
Masters Thesis (Open Access)
Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic
Johnson, Eric G., "Electromagnetic Scattering by an Aperiodic Strip Grating" (1989). Retrospective Theses and Dissertations. 4164.