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Resonant-frequency temperature coefficient andQ-factor of a dielectric resonator at 6 mm wave-length and 850 °C

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Il Nuovo Cimento D

Summary

The resonant-frequency temperature coefficient andQ-value of a sapphire resonator at 50 GHz has been measured at temperatures ranging from 20 to 850°C. The resonator operates in an open-structure configuration, without any metal part. In this way it is possible to work at high temperatures, theQ-factor being affected only by the intrinsic dielectric losses of the crystal. The results indicate that the sapphire resonator is well suited for applications up to 850°C.

Riassunto

Si studia il comportamento di, un risuonatore di zaffiro alla frequenza di 50 GHz ed a temperature variabili tra 20 e 850 °C. Si danno le misure del coefficiente termico della frequenza di risonanza tra 20 e 850°C e del fattore di merito a 850°C. Si forniscono dettagli sul montaggio del risuonatore in una struttura aperta, priva di pareti metalliche esposte al campo e.m. che circonda il risuonatore.

Резюме

Исследуются параметрьи сапфирового резонатора на частоте 50 ГГц. Измеряются тепловой козффиициент для резонансной частотьи ивеличина добротности в области температур от 20 до 850°C. Резонатор представляет конфичурацию с открьтой структурой без металлических частей. Резонатор позволяет работать при вьисоких температурах иего добротность зависит тольло от внутренних диэлек-трических потерь кристалла. Полученньие результатьи покзяивают, что сапфировый резонатор может работать при температурах вплоть до 850°C.

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Longo, I. Resonant-frequency temperature coefficient andQ-factor of a dielectric resonator at 6 mm wave-length and 850 °C. Il Nuovo Cimento D 3, 673–681 (1984). https://doi.org/10.1007/BF02457523

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  • DOI: https://doi.org/10.1007/BF02457523

PACS. 35.80

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