Simple design rules for optimal design of dielectric temperature-compensated sapphire resonators |
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Authors: | Tobar Michael E Cros Dominique Hartnett John G Blondy Pierre Guillon Pierre |
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Affiliation: | Dept. of Phys., Western Australia Univ., Nedlands, WA, Australia; |
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Abstract: | It has been shown that the use of two dielectric crystals with opposite temperature coefficient of permittivity allows the realization of a resonator with a zero temperature coefficient of frequency. By using sapphire and rutile materials, which have low-loss tangents, some compensated resonators with very high Q-factors have been realized. In this work we develop rules that greatly simplify the design of a dielectric-compensated resonator. We show that the optimum design for compensation at a specific temperature may be determined by simply selecting the aspect ratio of the sapphire resonator. |
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