Scattering characteristics of a new dielectric periodic array composed of left‐handed gratings

The scattering characteristics of a new dielectric periodic array composed of left‐handed gratings are carefully investigated by a method which combines the multimode network theory with the rigorous mode matching method. The variations of the frequency selective characteristics with the number of periodic layers are presented and comparisons of scattering properties between the left‐handed and right‐handed periodic arrays are also shown with some explanations. Guidelines for accurate design of the millimeter wave frequency selective surface are given. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 266–269, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23076