A patterning method of polarization grids on a reflector using reflector surface developing technique

This article proposes a patterning method of polarization grids on a reflec tor using reflector surface developing technique for gridded reflector ante nnas. Gridded reflector antennas have excellent cross-polarization suppress ion characteristics caused by their polarization grids on a reflector. The proposed grid patterning method is simple to transcribe a plane grid patter n onto a curved reflector surface, being different from conventional compli cated methods such as a direct photoetching method by N/C-driven laser syst em. A key technology for plane pattern design to obtain a desired pattern o n a curved reflector surface is described. The method is evaluated through appropriate models and is verified by a measured radiation pattern. (C) 199 9 Scripta Technica.