Title :
Design of an ultra-directive antenna using spatial coordinate transformation
Author :
Tichit, P.H. ; Burokur, S.N. ; de Lustrac, A.
Author_Institution :
Inst. d´´Electron. Fondamentale, Univ. Paris-Sud, Orsay
Abstract :
Spatial coordinate transformation is used as a reliable tool to control electromagnetic fields. In this paper, we derive the permeability and permittivity tensors of a metamaterial able to transform a dipole source radiating isotropically to an ultra-directive antenna. We show how its directivity is enhanced when the wavelength is sufficiently small compared to the width of the metamaterial. Numerical simulations using Comsol Multiphysics are performed to illustrate these properties.
Keywords :
antenna radiation patterns; dipole antennas; directive antennas; electromagnetic fields; metamaterials; permeability; permittivity; tensors; Comsol Multiphysics; dipole source radiation; electromagnetic fields; metamaterial; permeability tensors; permittivity tensors; spatial coordinate transformation; ultra-directive antenna design; Anisotropic magnetoresistance; Dipole antennas; Directive antennas; Electromagnetic fields; Jacobian matrices; Metamaterials; Permeability; Permittivity; Tensile stress; Transforms;
Conference_Titel :
Antenna Technology, 2009. iWAT 2009. IEEE International Workshop on
Conference_Location :
Santa Monica, CA
Print_ISBN :
978-1-4244-4395-6
Electronic_ISBN :
978-1-4244-4396-3
DOI :
10.1109/IWAT.2009.4906905
