电子元件与材料2011，Vol.30Issue(11)：38-41,4.
基于Hamming函数变迹加权SAW温度传感器设计
Design of apodized weighting SAW temperature sensor based on Hamming function
摘要
Abstract
A 431.5 MHz surface acoustic wave (SAW) temperature sensor was preprared with selecting a special tangential piezoelectric crystal, and processing the electrode length of the interdigital transducer (IDT) by apodized weighting using Hamming function. The impact of Hamming function on restraining the frequency response sidelobe of IDT was researched. The temperature-frequency characteristic test was done in order to study the performance of the prepared SAW temperature sensor such as the sensitivity, accuracy and so on. The simulation and measurement results show that the apodized weighting method based on Hamming function can restrain the out-of-band response of IDT more than 50 dB, and the impact of Hamming function on restraining sidelobe is obvious. The measurement error of the prepared SAW temperature sensor is less than 0.5 ℃, and the sensitivity of it is up to 7.79 kHz/℃, the temperature-frequency characteristic is linear in the temperature range of-20-+120 ℃.关键词
压电晶体/叉指换能器/变迹加权/声表面波/旁瓣抑制Key words
piezoelectric crystals/ interdigital transducer(IDT)/ apodized weighting/ surface acoustic wave(SAW)/ restraining sidelobe分类
信息技术与安全科学引用本文复制引用
卢小荣,刘文,王磊..基于Hamming函数变迹加权SAW温度传感器设计[J].电子元件与材料,2011,30(11):38-41,4.基金项目
国家创新基金资助项目(No.11C26224212716) （No.11C26224212716）
