Study of Two Dimensional Tapered Periodic Edge Treatments to Reduce Wideband Edge Diffraction.

摘要

This is a brief summary of a study to reduce diffraction from an infinite two dimensional edge using tapered periodic surfaces. The concept is to use the impedance characteristics of a periodic surface to create a tapered impedance; much like a tapered resistance commonly used for diffraction reduction. This approach has several advantages over tapered resistive treatments to include ease of fabrication, better engineering control of the impedance and negligible loss absorbed by the taper. In this study, four periodic tapers were design, built and tested. These tapers were also modeled using a variety of numerical techniques. The results from this study were quite promising. Edge treatments, FSS, TPS, Wideband, Diffraction.