Temperature compensated sapphire-rutile microwave whispering gallery mode resonator

Authors
Kersale, Y Vallet, O Vives, S Meunier, C Giordano, V
Citation
Y. Kersale et al., Temperature compensated sapphire-rutile microwave whispering gallery mode resonator, ELECTR LETT, 37(23), 2001, pp. 1392-1393
Citations number
7
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRONICS LETTERS
ISSN journal
00135194 → ACNP
Volume
37
Issue
23
Year of publication
2001
Pages
1392 - 1393
Database
ISI
SICI code
0013-5194(20011108)37:23<1392:TCSMWG>2.0.ZU;2-5
Abstract
A 2 mum-thick film of rutile (TiO2) was deposited on a sapphire disk using a sol-gel method to realise a temperature compensated microwave resonator o perating in whispering gallery mode configuration. The resonator, though no t vet completely optimised, shows turnover temperatures ranging from 40 to 60K depending on the mode azimutal number. For the WGH(7,0,0) mode at 9.4GH z. the Q-factor is of the order of 1.5 x 10(6) at 46K, The technique appear s easy to implement and can be used for the design or high-frequency stabil ity microwave source.