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PIERS Online
Vol. 4
No. 2
2008
pp: 217-220Design of Three-layer Circular Mushroom-like EBG StructuresS. Mahdi Moghadasi, Amir Reza Attari, and Mir M. Mirsalehi doi:10.2529/PIERS070907053440 Downloads: 1065 Abstract:In this paper two types of three-layer mushroom-like electromagnetic band-gap (EBG) surfaces with circular patches are investigated. One of them consists of a square array of circular patches and the other one consists of a triangular array of circular patches in upper and lower layers. Guidelines for designing a ground plane for low profile antenna applications are presented using the reflection phase characteristics. The effect of some parameters of the three-layer structures on the reflection phase characteristic is studied. The frequency band in which a wire antenna adjacent to the three-layer EBG surface has good matching is determined by investigating the reflection phase characteristics of the EBG ground plane.References:1. Engheta, N. and R. W. Ziolkowski, Metamaterials Physics and Engineering Explorations, Wiley, New York, 2006. 2. Sievenpiper, D., L. Zhang, R. F. J. Broas, N. G. Alexopolus, and E. Yablonovitch, "High-impedance electromagnetic surfaces with a forbidden frequency band," IEEE Trans. Microwave Theory Tech., Vol. 47, 2059-2074, Nov., 1999. 3. Yang, F. and Y. Rahmat-Samii, "Reflection phase characterizations of the EBG ground plane for low profile wire antenna applications," IEEE Trans. Antennas Propag., Vol. 51, 2691-2703, Oct., 2003. 4. Remski, R., "Analysis of PBG surfaces using Ansoft HFSS," Microwave J., Vol. 190-198, 43-9, Sept., 2000. |
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