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A theoretical model for dielectric resonators in whispering gallery mode for application in millimetre wave monolithic integrated circuits

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2 Author(s)
Khairuddin, I.U. ; Dept. of Electr. & Electron. Eng., Bradford Univ., UK ; Hunter, I.C.

Whispering gallery mode dielectric resonators have high quality factors, compatibility with MMIC's and reasonable mechanical dimensions even at millimeter-wavelength frequencies. They have been used in filters, oscillators and power combiners. For practical use dielectric resonators must be coupled to a transmission line. In this paper a relatively simple mathematical model of the coupling between a dielectric resonator acting in WGE mode and a transmission line has been proposed. Rather than coupling in one plane, the concept of using an effective coupling length; as previously been used in conventional mode dielectric resonators; has been introduced in the analysis. Finally, measured quality factors are compared with our proposed model and they have found to be in good agreement

Published in:

Modelling, Design and Application of MMIC's, IEE Colloquium on

Date of Conference:

17 Jun 1994