Title :
Phase and group velocities in three-dimensional ideal cloaks
Author :
Martini, Enrica ; Maci, Stefano ; Yaghjian, Arthur D.
Author_Institution :
Dept. of Inf. Eng., Univ. of Siena, Rome
Abstract :
Some interesting aspects of the field distribution inside an ideal spherical cloak are investigated. The Poynting vector, the local differential propagation constant and the phase velocity distributions are calculated for a plane wave illumination. Then, the group and energy transport velocities are considered and it is shown that they are equal only if the permittivity and permeability dyadics have the same frequency dependence around the cloak frequency.
Keywords :
electromagnetic wave propagation; energy transport velocities; field distribution; group velocities; local differential propagation constant; permittivity-permeability dyadics; phase velocity distributions; phase-group velocities; three-dimensional ideal cloaks; Anisotropic magnetoresistance; Bandwidth; Design methodology; Electromagnetic scattering; Frequency dependence; Lighting; Permeability; Permittivity; Propagation constant; Trajectory;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
