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Design of a Cylindrical Dielectric Resonator Antenna with a Dielectric Clad  

이권익 (제주대학교 통신공학과)
김흥수 (제주대학교 통신컴퓨터공학부)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.40, no.4, 2003 , pp. 54-59 More about this Journal
Abstract
In this paper, a cylindrical dielectric antenna with dielectric clad is designed and analyzed. Design parameters of a cylindrical dielectric resonator antenna are calculated from the wave equation of cylindrical dielectric. The variations of characteristics of the antenna are analyzed as varying the thickness and the relative permittivity of its clad. From the results, when the ratio of the outside radius of the dielectric clad to the radius of the cylindrical dielectric is 1.3 and the relative permittivity of the dielectric clad is one-third of the cylindrical dielectric resonator antenna, the relative bandwidth of the antenna is 49%, which is improved by 2.3 times than the cylindrical dielectric resonator antennas. However, the thickness and the relative permittivity of the dielectric clad have not effect on the radiation pattern, beamwidth and gain of the antenna.
Keywords
dielectric resonator antenna; dielectric clad; bandwidth enhancement;
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