Title :
Radiation by slotted elliptic antenna coated by lossy and lossless multi-dielectrics metamaterials
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Sharjah, Sharjah
Abstract :
The far field characteristics of an axially slotted elliptical antenna coated with lossy and lossless multi-dielectric metamaterials layers are investigated. The fields in the various regions are expressed in terms of complex Mathieu functions. The unknown field expansion coefficients in every region are obtained by applying the boundary conditions at various surfaces. Numerical results are obtained for the radiation pattern and antenna gain for the case of lossy and lossless metamaterials coatings. The obtained numerical results show that slotted antenna coated with lossy multi-dielectric metamaterials could have higher gain and lower side lobes for specific parameters than single layered antenna.
Keywords :
amplification; coatings; metamaterials; slot antennas; antenna gain; axially slotted elliptical antenna; complex Mathieu functions; far field characteristics; lossless multidielectric metamaterials layers; lossy multidielectric metamaterials layers; metamaterials coatings; radiation; single layered antenna; slotted elliptic antenna; Antenna radiation patterns; Boundary conditions; Coatings; Dielectric losses; Dielectric materials; Engine cylinders; Geometry; Metamaterials; Permittivity; Slot antennas; Elliptic Antenna; complex Mathieu function; far field characteristics; metamaterials;
Conference_Titel :
Communications, Control and Signal Processing, 2008. ISCCSP 2008. 3rd International Symposium on
Conference_Location :
St Julians
Print_ISBN :
978-1-4244-1687-5
Electronic_ISBN :
978-1-4244-1688-2
DOI :
10.1109/ISCCSP.2008.4537279
