Application of the Plane Wave Expansion Method to Periodic Arrays Having a Skewed Grid Geometry.

摘要

This report extends the Plane Wave Expansion Method of calculating the performance of periodic arrays to include arrays with a skewed grid structure. Previously, only rectangular grids could be calculated using this method. The Plane Wave Expansion Method is important since it may be used to calculate performance of arrays imbedded in dielectric and arrays with almost any element geometry. This work is important to the Air Force in that it enables us to compute metallic radome surfaces where the elements are located in a skewed fashion. This is a crucial step in designing metallic radomes of arbitrary shape. This added dimension to the Plane Wave Expansion Method has been used to investigate arrays of generalized three legged elements in a triangular grid structure. (Author)