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The goal of this letter is to present the behavior of mu-negative (MNG) metamaterial-based electrically small antennas. The Green's function analysis is applied to characterize the performance of a hemispherical negative permeability (MNG) resonator excited by a slot aperture. The method of moment (MoM) is used to obtain the current distribution over the source excitation. It is illustrated how a resonator composed of negative permeability medium can successfully establish a small antenna element. For small-size structure , the approximated-form Green's function demonstrates the relation between the resonant frequencies and the material parameters. The obtained results are integrated into the design of a MNG slab radiator. The radiation performance of a slab resonator is detailed using a finite difference time domain (FDTD) full wave analysis. The obtained observations may provide road maps for the future design of metamaterial-based subwavelength antennas.
Published in:
Antennas and Wireless Propagation Letters, IEEE
(Volume:7
)
Date of Publication: 2008
- Page(s):
- 13 - 17
- ISSN :
- 1536-1225
- INSPEC Accession Number:
- 9921113
- Digital Object Identifier :
- 10.1109/LAWP.2007.911393
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 01 February 2008
- Issue Date :
- 2008
- Sponsored by :
- IEEE Antennas and Propagation Society
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