Title:
Theory and Simulations of a Conformal Omni- Directional Subwavelength Metamaterial Leaky-Wave Antenna
Author(s):
Andrea Alù, Filiberto Bilotti, Nader Engheta, Fellow, and Lucio Vegni,
Source:
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Vol./Issue/Date:
VOL. 55, NO. 6, JUNE 2007
Year:
2007
Page(s):
1698-1708
Keywords:
Conformal antennas, cylindrical antennas, leakywaves, metamaterials.
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.
Document:
Reference Id:
392
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