Title :
On the probe-fed dielectric resonator inside the parallel-plate waveguide
Author :
Leung, Kwok-Wa ; Chen, Zhi Ning ; Luk, Kwai-Man ; Yung, Edward Kai-Ning
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong
fDate :
7/1/1999 12:00:00 AM
Abstract :
In this paper, the probe-fed dielectric resonator (DR) placed inside the parallel-plate waveguide is studied theoretically and experimentally. Simple formulas for predicting the trapped- and leaky-mode resonant frequencies are presented. The cylindrical-harmonics expansion method is used to find the input impedance of the configuration. The effects of the probe length, dielectric constant, and DR radius/height ratio on the input impedance are discussed. It is found that the probe can substantially change the characteristics of a mode when it exceeds a certain length
Keywords :
dielectric resonators; electric impedance; mode matching; parallel plate waveguides; permittivity; probes; waveguide theory; DR radius/height ratio; cylindrical-harmonics expansion method; dielectric constant; input impedance; leaky-mode resonant frequencies; parallel-plate waveguide; probe length; probe-fed dielectric resonator; trapped-mode resonant frequencies; Coatings; Dielectric constant; Dielectric resonator antennas; Impedance; Magnetic fields; Mode matching methods; Probes; Resonance; Resonant frequency; Waveguide theory;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
