1. Theory and Simulations of a Conformal Omni-Directional Subwavelength Metamaterial Leaky-Wave Antenna.
- Author
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Alù, Andrea, Bilotti, Filiberto, Engheta, Nader, and Vegni, Lucio
- Subjects
- *
CYLINDRICAL antennas , *ANTENNAS (Electronics) , *WAVES (Physics) , *FREQUENCIES of oscillating systems , *METAMATERIALS , *NUMERICAL analysis , *GEOMETRY - Abstract
The detailed theory of a single subwavelength conformal radiator that exploits the resonant properties of thin cylindrical metamaterial shells supporting leaky waves is presented. It is shown and reviewed analytically and numerically how a circularly symmetric resonant leaky mode may be supported by a properly designed subwavelength homogenous cylindrical shell of low negative permittivity. Some physical insights are provided and numerical simulations with a feed point, considering also the finiteness of the antenna in the longitudinal direction, are presented and discussed. Moreover, possibilities and limitations of a practical realization of this setup are mentioned, considering in details the possible anisotropies in the metamaterials. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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