A SAW DELAY-LINE OSCILLATOR AS A HIGH-RESOLUTION TEMPERATURE SENSOR

被引：7
|
作者：
NEUMEISTER, J
THUM, R
LUDER, E
机构：
[1] Institut für Netzwerk- und Systemtheorie, Universität Stuttgart, Plaffenwaldring 47
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 1990年 / 22卷 / 1-3期
关键词：
D O I：
10.1016/0924-4247(89)80055-X
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new highly linear temperature sensor with a large resolution using a LiNbO3 SAW delay-line oscillator is presented. The large temperature dependence of the propagation velocity of a surface acoustic wave in a yz LiNbO3 crystal ({reversed tilde equals} -90 ppm/°C) is used in an electroacoustic delay line in the feedback path of an oscillator. The oscillation frequency is inversely proportional to the signal delay. Measurements of this sensor show very linear frequency-versus-temperature characteristics. © 1990.
引用
收藏
页码：670 / 672
页数：3
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