STW two-port asynchronous resonator on BT-cut quartz

Author

Soluch, Waldemar

Author_Institution

Inst. of Electron. Mater. Technol., Warsaw

Volume

55

Issue

11

fYear

2008

fDate

11/1/2008 12:00:00 AM

Firstpage

2519

Lastpage

2521

Abstract

A surface transverse wave (STW) 2-port asynchronous resonator on BT-cut (-50.5degYX90deg) quartz was fabricated, measured, and calculated. At a frequency of about 332.4 MHz, insertion loss, and loaded and unloaded quality factors of about 11 dB, 8,000, and 11,500, respectively, were achieved. A turnover temperature of about 20degC and a quadratic frequency-temperature coefficient of approximately -15 ppb/degC² were obtained. Compared with STW resonators on AT-cut quartz (36degYX90deg), this temperature coefficient is about 4 times smaller, and about 2 times smaller than that for SAW on an ST cut. STW resonators and filters on BT-cut quartz can be used in applications requiring improved temperature stability.

Keywords

quartz; stability; surface acoustic wave devices; BT-cut quartz; SiO₂; quadratic frequency-temperature coefficient; surface transverse wave; temperature stability; two-port asynchronous resonator; Frequency estimation; Frequency measurement; Gratings; Loss measurement; Phase measurement; Position measurement; Temperature; Thickness measurement; Time measurement; Velocity measurement; Acoustics; Computer-Aided Design; Crystallization; Equipment Design; Equipment Failure Analysis; Quartz; Scattering, Radiation; Temperature; Transducers; Vibration;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.960

Filename

4686884