Title :
Numerical study of a cylindrical dielectric-resonator antenna coated with a dielectric layer
Author :
Shum, S.M. ; Luk, K.M.
Author_Institution :
Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong
fDate :
4/1/1995 12:00:00 AM
Abstract :
A cylindrical dielectric-resonator antenna coated with a thin dielectric layer and operating in TM01δ mode is studied numerically. The input impedances of the antenna with dielectric coatings of different values of relative permittivity are calculated using the finite-difference time-domain method. It is demonstrated that the impedance bandwidth of the antenna can be substantially improved if an appropriate value of the relative permittivity of the dielectric coating is chosen
Keywords :
dielectric resonators; dielectric-loaded antennas; electric impedance; finite difference time-domain analysis; permittivity; TM01δ mode; cylindrical dielectric-resonator antenna; dielectric coated antenna; finite-difference time-domain method; impedance bandwidth; input impedances; relative permittivity;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19951777
