Room temperature measurement of the anisotropic loss tangent of sapphire using the whispering gallery mode technique.
IEEE Trans Ultrason Ferroelectr Freq Control
; 53(1): 34-8, 2006 Jan.
Article
em En
| MEDLINE
| ID: mdl-16471430
ABSTRACT
The anisotropic loss tangent has been determined in monocrystalline sapphire for components parallel and perpendicular to the crystal axis, using the whispering gallery (WG) mode method. The Q-factors of quasi-TE and quasi-TM modes were measured precisely in four cylindrical sapphire resonators at room temperature, from which was determined a maximum attainable Q-factor of (2.1 +/- 0.2) x 10(5) at 9 GHz in a quasi-TM mode. Sapphire dielectric material from three different manufacturers was compared over the 270-345 K temperature range and the 5-16 GHz frequency range.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Austrália