A novel broadband EBG using cascaded mushroom‐like structure

Abstract

Abstract A novel broadband electromagnetic band‐gap (EBG) structure is presented using cascaded mushroom‐like structure with different radius of via. Direct transmission method is used to determine the band‐gap of the EBG structure. The effects of the radius of via and unit number on the mushroom‐like EBG structure are investigated. Two kinds of unit with different via radius are cascaded to enlarge the band‐gap of EBG structure, which achieves almost 70%. The simulation and experimental results show that the band‐gap covers the stop‐band produced by the two uniform configurations with different radius, respectively. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2167–2170, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23598