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

fYear

1988

fDate

11-13 Apr 1988

Firstpage

556

Lastpage

560

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '88., IEEE Conference Proceedings

Conference_Location

Knoxville, TN

Type

conf

DOI

10.1109/SECON.1988.194919

Filename

194919