Accurate FEM/BEM Simulation of Wireless Passive Surface Acoustic Wave Sensors

摘要：

　　The wireless passive surface acoustic wave (SAW) impedance-loaded sensors offer new and exciting perspectives for remote monitoring and controlling of moving parts,even in harsh environments.However,the classical simulation models such as equivalent circuit model (ECM) and coupling of modes (COM) model are not rigorous enough for these sensors since these sensors usually work in the RF band.We try to make it more accurate by using FEM/BEM (combined finite element method and boundary element method) model to determine some key parameters used in the COM model of impedance-loaded SAW sensors.In this paper,we use periodic Green function which is the basis of FEM/BEM model to determine the key parameters.The result of measurements on real SAW is nearly in accordance with that of simulations.

关键词： Surface acoustic wave sensors Periodic Greens function Coupling of modes

作者: Wei Luo Qiuyun Fu Jianlin Wang Huan Liu Dongxiang Zhou

作者单位: Research Center for Functional Ceramics of the Ministry of Education,Department of Electronic Science & Technology,Huazhong University of Science & Technology,Wuhan City 430074,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 198-201

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）