摘要
针对谐振型声表面波(SAW)传感器,研究了3种不同窗函数加权对SAW传感器谐振响应副瓣抑制的影响,仿真结果表明,凯瑟尔窗在旁瓣抑制上性能最优,阻带最小衰减达-120.2dB。同时制备了以LST切型石英为基片材料,凯瑟尔窗为加权函数的SAW温度传感器。测试和应用试验表明,所设计的传感器性能具有良好的一致性、温度频率特性和旁瓣抑制能力,能较好满足面向电网温度状态监测的应用。
Aimed at resonant surface acoustic wave （SAW） sensor; the influences of side-lobe rejection levels of three different window functions on SAW sensor are researched. Simulation results show that the performance of Kaiser window with high stop-band attenuation up to --120.2 dB is more excellent than the other two. Meanwhile, SAW temperature sensor is designed using SiO2 crystal as the substrate material at LST cut and weighted inter-digital transducer with Kaiser window. Test results present that the designed SAW temperature sensor has good consistency, temperature-frequency characteristic and side-lobe rejection. It can well meet the temperature monitoring application of power grid.
出处
《压电与声光》
CSCD
北大核心
2012年第6期817-819,共3页
Piezoelectrics & Acoustooptics
基金
国家创新基金资助项目(11C26224212716)
关键词
声表面波(SAW)
温度传感器
谐振器
凯瑟尔窗
电网应用
surface acoustic wave （SAW）
temperature sensor
resonator
Kaiser window
grid-oriented application
