Design of Arbitrarily Controlled Multi-Beam Antennas via Optical Transformation

Article

Abstract

The design of arbitrarily controlled multi-beam antennas is investigated by using the technique of optical transformation. Based on the optical transformation, cylindrical waves emitted from a line source can be converted to plane waves through a metamaterial layer which has a circular shape in the inner outline and a polygon shape in the outer outline. Hence the line source together with the metamaterial layer constructs a high-performance multi-beam antenna. The number of sidelines and the shape of polygon are used to control the number and directions of beams. Analytical formulas of the permittivity and permeability tensors are presented for the metamaterial layer in the antenna. The designed multi-beam antennas are validated by full-wave simulations using the finite-element method. The proposed multi-beam antennas will be very useful in the intelligent traffic system.

Keywords

Electromagnetic theory Optical transformation Anisotropic and inhomogeneous metamaterials Multi-beam antennas 

PACS

41.20.Jb 42.25.Gy 42.79.Dj 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.School of Information EngineeringChang’an UniversityXi’anP. R. China
  2. 2.Transportation Research Group, School of Civil Engineering and the EnvironmentUniversity of SouthamptonSouthamptonU.K.

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