Title :
Metamaterial Spheroidal Cavity to Enhance Dipole Radiation
Author :
Negishi, Tadahiro ; Erricolo, Danilo ; Uslenghi, Piergiorgio L. E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Chicago, Chicago, IL, USA
Abstract :
Metamaterials have been considered for their potential to improve the radiation characteristics of sources. A novel geometry consisting of a semioblate spheroidal cavity containing two layers, one made of DPS and the other made of DNG metamaterial, and built underneath an aperture in infinite metallic plane is considered. An exact analytical solution is obtained and its numerical evaluation demonstrates a significant improvement of the directive radiation of a dipole source, with the appropriate combination of the ordinary double positive (DPS) and DNG layers.
Keywords :
dipole antennas; metamaterial antennas; numerical analysis; DNG layers; DNG metamaterial; DPS; dipole source; directive radiation; enhance dipole radiation; infinite metallic plane; metamaterial spheroidal cavity; numerical evaluation; ordinary double positive; radiation characteristics; semioblate spheroidal cavity; Apertures; Cavity resonators; Geometry; Integrated circuits; Magnetic materials; Metamaterials; Artificial materials; Electromagnetic Analysis; Electromagnetic Fields; Electromagnetic Radiation; Electromagnetic Scattering; Electromagnetic Theory; Isorefractive Material; Spheroids; electromagnetic analysis; electromagnetic fields; electromagnetic radiation; electromagnetic scattering; electromagnetic theory; isorefractive material; spheroids;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2015.2416755
