Title :
Study of frequency-temperature characteristics of quartz with various cut angle and metal thickness of electrode
Author :
Chung, Mei-hui ; Wang, Shuming T. ; Huang, Alex C S
Author_Institution :
Dept. of Electr. Eng., I-Shou Univ., Kaohsiung, Taiwan
Abstract :
Choosing a suitable temperature coefficient of frequency (TCF) and turnover temperature (TOT) of quartz substrate for surface acoustic wave (SAW) resonators is extremely important in designing a highly stable SAW oscillator. In general, TCF and TOT depend on the cut angle of the substrate, the wave propagation direction and the metal thickness of the electrodes. The temperature characteristics of quartz substrates were studied experimentally by investigating high-Q one-port SAW resonators. The substrates covered from Y32°-X to Y37°-X and ST-X. The metal thickness of electrodes covered 1.8%, 3.6% and 5.4%.
Keywords :
acoustic wave propagation; electrodes; quartz; surface acoustic wave oscillators; surface acoustic wave resonators; temperature; SAW oscillator; SAW resonators; cut angle; electrode metal thickness; frequency-temperature characteristics; quartz resonators; surface acoustic wave resonators; temperature coefficient of frequency; turnover temperature; wave propagation direction; Acoustic propagation; Acoustic waves; Circuits; Electrodes; Frequency measurement; Resonant frequency; Substrates; Surface acoustic waves; Temperature distribution; Temperature measurement;
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
Print_ISBN :
0-7803-8414-8
DOI :
10.1109/FREQ.2004.1418532
