A MULTICOMPOSITE, MULTILAYERED CYLINDRICAL DIELECTRIC RESONATOR FOR APPLICATION IN MMICS

A method, based on the mode matching technique, to study various reson ant modes of a multicomposite, multilayered cylindrical dielectric res onator is presented. Dielectric sphere and cone resonators placed in p ractical environments are investigated. The calculated resonant freque ncies show very good agreements compared with the numerical results of the finite difference method for the spherical resonator and with the measured values for the conical resonator, respectively. Experimental investigations show that the conical resonator can be coupled to a ci rcular microstrip line, which has small size at high frequencies and m ay be integrated together with an oscillator.