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Single-crystal dielectric resonators for low-temperature electronics applications

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2 Author(s)
Knupka, J. ; Dept. of Electron., Warsaw Univ. of Technol., Poland ; Mazierska, J.

Computed properties of high-Q factor sapphire, YAG, SrLaAlO4 , LaAlO3, rutile, and quartz dielectric resonators (DR) operating on whispering-gallery TE011 and TE0.1δ modes are presented in this paper. Resonators with a superconducting metal or partly superconducting partly metal shield are considered. For whispering-gallery-mode resonators, dielectric losses determine the upper limit for their Q factors, while for TE011-mode resonators, their Q factors are usually limited by conductor losses. Single-crystal TE0.1δ-mode resonators would have Q factors determined by both dielectric and conductor losses, and dominant loss mechanism depends on crystal losses and shield geometry. Geometric factors that allow evaluation of conductor losses of TE011- and TE0.1δ-mode resonators are given for different DR structures

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:48 ,  Issue: 7 )