光电子快报(英文版), 2015, 11 (2): 88, Published Online: Oct. 12, 2017  

Optimization of frequency characteristics for SAW device using apodization weighting method

Author Affiliations
1 Tianjin Key Laboratory of Film Electronic & Communication Devices, School of Electronics Information Engineering, Tianjin University of Technology, Tianjin 300384, China
2 Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
Abstract
In this paper, the positive influence of apodization weighting method on frequency characteristics of surface acoustic wave (SAW) temperature sensor is investigated. Simulation and experiment results show that side lobe suppression abilities of the sensor can be improved by using apodization weighting which is based on Chebyshev window. Meanwhile, we find that the side lobe of the sensor can be further restrained, when the dummy electrodes are removed. Frequency- temperature characteristics of the devices are independent of the inclusion of dummy electrodes. The apodization weighted SAW temperature sensor shows great application potential in occasions with strong electromagnetic interference.

ZHOU Lei, ZHANG Kai-liang, WANG Fang, HAN Ye-mei, MIAO Yin-ping, LI Dong-mei, LIANG Sheng-fa. Optimization of frequency characteristics for SAW device using apodization weighting method[J]. 光电子快报(英文版), 2015, 11(2): 88.

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