A new reflectarray cell using microstrip patches loaded with slots

In this paper, a new reflectarray cell consisting of a variable-length slot etched in a microstrip patch is presented. The phase shift is achieved by controlling the length of the slot. Two different structures are proposed: the first one uses a single patch with a single slot while the second involves three coupled patches sharing two slots. Good agreement between the simulations and measurements is obtained for passive structures designed at 5.7 GHz in a waveguide. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 44: 270–272, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20608