Title :
Characterization of metamaterial-based electrically small antennas
Author :
GhadarGhadr, Shabnam ; Mosallaei, Hossein
Author_Institution :
Northeastern Univ., Boston
Abstract :
The purpose of this work is to theoretically investigate the behavior of an electrically small antenna enclosed in a metamaterial sphere. We consider the use of magneto-dielectric and negative permittivity materials for constructing the small antenna. The Green´s function for the evaluation of the input impedance is derived and the method of moment with Galerkin´s procedure is used to determine the probe current from which the input impedance of the resonator is calculated. A physical insight is provided, and the effect of metamaterials for bandwidth enhancement is addressed.
Keywords :
Galerkin method; Green´s function methods; antennas; dielectric materials; metamaterials; Galerkin procedure; Green function; electrically small antennas; magneto dielectric materials; metamaterial sphere; negative permittivity materials; probe current; Antenna theory; Boundary conditions; Green´s function methods; Impedance; Magnetic materials; Metamaterials; Moment methods; Permittivity; Probes; Scattering;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4396772
