Title :
Radiation characteristics of cylindrical dielectric resonator antennas
Author :
Kishk, Ahmed A. ; Auda, Hesham A. ; Ahn, Beirng C.
Author_Institution :
Dept. of Electr. Eng., Mississippi Univ., University, MS, USA
Abstract :
The radiation patterns of cylindrical dielectric resonator antennas excited with a TM11 mode are computed numerically using the method of moments. The numerical data obtained are in good agreement with available experimental results. The effect of the ground plane size, dielectric constant, and resonator dimensions on the radiation patterns are investigated. It is found that the symmetry of the radiation patterns is improved by reducing the grounds plane dimensions, while the backlobe level is reduced by placing the antenna in a topless cylindrical cavity. Further improvement is obtained by surrounding the cylinder by a quarter-wavelength choke
Keywords :
antenna radiation patterns; dielectric resonators; dielectric-loaded antennas; TM11 mode; backlobe level; cylindrical dielectric resonator antennas; dielectric constant; ground plane size; quarter-wavelength choke; radiation patterns; resonator dimensions; topless cylindrical cavity; Antenna radiation patterns; Conductors; Current; Dielectric constant; Dielectric resonator antennas; Engine cylinders; Integrodifferential equations; Magnetic analysis; Magnetic separation; Moment methods;
Conference_Titel :
Southeastcon '88., IEEE Conference Proceedings
Conference_Location :
Knoxville, TN
DOI :
10.1109/SECON.1988.194919
