A novel spiral high impedance surface structure for size reduction

A novel electromagnetic Band-Gap (EBG) scheme is presented for size reduction. The proposed structure can be considered as one kind of distorted Sievenpiper High Impedance Surface (HIS) in a spiral shape, while it becomes extremely compact in size. Its design is detailed in this study, and two experimental results are presented. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2186–2189, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22691