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Effects of ground size on characteristics of ENG ZOR antennas  

Lee, Seung-Wook (Department of Electronic Information and Communication Engineering, Hongik University)
Park, Jae-Hyun (Department of Electronic Information and Communication Engineering, Hongik University)
Lee, Jeong-Hae (Department of Electronic Information and Communication Engineering, Hongik University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.45, no.8, 2008 , pp. 8-14 More about this Journal
Abstract
In this paper, the effects of ground size on the characteristics such as input resistance, fractional bandwidth, and radiation efficiency of epsilon negative (ENG) zeroth order resonance (ZOR) antennas were investigated theoratically. Two types of ENG ZOR antennas were studied: mushroom ENG ZOR antenna with via and via-free defected ground structure (DGS) ENG ZOR antenna. It was confirmed that the ground size had more effects on the characteristics of a Via-free ZOR antenna than those of mushroom ZOR antenna with via. The via-free antenna could radiate properly with the required size of ground plane since the size of ground plane should exceed some critical value for DGS to suitably operate. As a height of substrate of mushroom ZOR antenna with via increased, the fractional bandwidth and radiation efficiency were improved. On the other hand, as a height of via-free ZOR antenna increased, the fractional bandwidth and radiation efficiency were degraded. Finally, a via-free ZOR antenna had an advantage of compactness even though its fractional bandwidth is narrow and its radiation efficiency is poor, compared with thoses of mushroom ZOR antenna with via.
Keywords
ENG; ZOR antenna; mushroom; via-free; ground plane size;
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  • Reference
1 Jae-Gon Lee and Jeong-Hae Lee, 'Zeroth order resonance loop antenna,' IEEE Transaction on Antennas and Propagation, Vol. 55, No. 3, pp. 994-997, March, 2007   DOI   ScienceOn
2 J. H. Park, Y. H. Ryu, J. G. Lee, and J. H. Lee, 'Epsilon negative zeroth-order resonator antenna,' IEEE Transaction on Antennas and Propagation, Vol. 55, No. 12, pp. 3710-3712, 2007   DOI   ScienceOn
3 J. H. Park, Y. H. Ryu, J. G. Lee, and J. H. Lee, 'A novel via-free composite right- and left-handed transmission line using defected ground structure,' Microwave and Optical Technology Letters, Vol. 49, No. 8, 2007
4 A. Lai, Itoh, T., Caloz, C., 'Composite right/left- handed transmission line metamaterials,' IEEE Microwave Magazine, vol.5, no.3, pp.34-50, 2004
5 David M. Posar, Microwave Engineering, Second Edition, John Wiley & Sons, Press