Title :
A novel enclosed cylindrical dielectric resonator antenna
Author :
Pliakostathis, Konstantinos
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK
Abstract :
A novel dielectric resonator antenna geometry enclosed by a rectangular cavity is proposed. It consists of a cylindrical ceramic material (εr=37), symmetrically placed inside an open rectangular metallic cavity. The antenna is excited by proximity coupling using, a coaxial feed that comes into one of the cavity´s sides and terminates some distance from the dielectric body. The low-Q (radiation) properties of this antenna are shown both experimentally and theoretically using the scattering parameters. Electric and magnetic field configurations and far field patterns of the low-Q modes up to 3 GHz are shown and the former are compared with the (E and H) field orientation of a fully shielded rectangular cavity.
Keywords :
S-parameters; UHF antennas; antenna feeds; antenna radiation patterns; cavity resonators; dielectric resonator antennas; mobile antennas; 3 GHz; E field orientation; H field orientation; broadband matching; coaxial feed; cylindrical ceramic material; cylindrical dielectric resonator antenna; electric field configurations; far field patterns; fully shielded rectangular cavity; low-Q properties; magnetic field configurations; open rectangular metallic cavity; proximity coupling; radiation properties; scattering parameters; Antenna feeds; Antenna theory; Ceramics; Coaxial components; Dielectric materials; Dielectric resonator antennas; Geometry; Inorganic materials; Magnetic shielding; Scattering parameters;
Conference_Titel :
High Frequency Postgraduate Student Colloquium, 2002.7th IEEE
Print_ISBN :
0-7803-7618-8
DOI :
10.1109/HFPSC.2002.1088416
