声表面波谐振型无线传感器匹配电路研究

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• 英文论文题名：Study of matching circuit for wireless surface acoustic wave sensor
• 论文作者：蔡飞达 ; 李红浪 ; 田亚会 ; 卢孜筱 ; 何世堂
• 英文论文作者：CAI Fei-da ; LI Hong-lang ; TIAN Ya-hui ; LU Zi-xiao ; HE Shi-tang ; Institute of Acoustics ; Chinese Academy of Science
• 年：2016
• 作者机构：中国科学院声学研究所;
• 论文关键词：SAWR ; 匹配电路 ; 反射信号 ; 能量优化
• 英文论文关键词：SAWR ; matching circuit ; reflected signal ; optimum energy
• 会议召开时间：2016-10-28
• 会议录名称：2016年全国声学学术会议论文集
• 语种：中文
• 分类号：TP212
• 学会代码：OGSM
• 会议名称：2016年全国声学学术会议
• 会议地点：中国湖北武汉
• 主办单位：中国声学学会
• 学会名称：中国声学学会
• 页数：4
• 文件大小：587k
• 原文格式：D
• 会议级别：全国

摘要

声表面波谐振型(Surface acoustic wave resonator,SAWR)无线传感器在物联网等领域得到广泛关注,其匹配电路的优化与否直接影响器件的测量距离与精度。本文针对具有阻抗特性的实际天线,提出一种基于反射信号能量优化的SAWR无线传感器匹配电路优化设计方法。依据反射信号能量最大的原则,分析天线阻抗对反射信号的幅度和信号持续时间的影响,计算出反射信号能量与天线阻抗的关系函数,得到最优化的等效天线阻抗值,由此得出天线L型匹配网络的电抗元件值。实验结果显示了此方法的有效性,为匹配电路的设计提供了一种新思路。
Wireless surface acoustic wave resonator(SAWR) sensors are widely used in the field of Internet of things. The design of matching circuit is important for SAWR sensor, impacting the measuring distance and precision directly. A new design method of matching circuit for SAWR sensor is proposed. According to maximizing the received energy of interrogation unit, the influences of sensor antenna impedance on the amplitude and duration of received signal by an interrogation unit is analyzed. Then the function of received energy of an interrogation unit is calculated, from which the optimum sensor antenna impedance for the maximum of received energy is chosen. The impedance of the matching circuit is derived from the optimum sensor antenna impedance. Experimental results prove the effective of the method.

引文

[1]K Y Hashimoto,T Omori,M Yamaguchi.Application of SAW devices to matching elements in RF circuits[A].Proceedings of2003 IEEE International Ultrasonics Symposium[C].New York:IEEE,2003:407-410.
    [2]A Pohl.A review of wireless SAW sensors[J].IEEE Transactions on Ultrasonics,Ferroelectrics and Frequency Control,2000,47(2):317-332.
    [3]V Kalinin.Passive wireless strain and temperature sensors based on SAW devices[A].Proceedings of 2004 IEEE International Ultrasonics Symposium[C].New York:IEEE,2004:187-190.
    [4]Pohl A,Ostermayer G,Seifert F.Wireless sensing using oscillator circuits locked to remote high-Q SAW resonator[J].IEEE Trans.on UFFC,1998,45(5):1161–1168.
    [5]D P Morgan.Simplified analysis of surface acoustic wave one-port resonators[J].Electronics Letters.2003,39(18):1361-1362.
    [6]黄秋元,董诗波.射频电路中匹配网络的设计和分析[J].武汉理工大学学报,2007,31(6):1061-1063.
    [7]江城,倪世宏,常迁榛.声表面波传感器中单端谐振器的匹配电路仿真[J].压电与声光,2008,30(1):6-8.
    [8]V Kalinin.Modeling of a wireless SAW system for multiple parameter measurement[A].Proceedings of2001 IEEE International Ultrasonics Symposium[C].New York:IEEE,2001:1790-1793.
    [9]M Cavin,N Ehauer,D C Malocha.Parameter extraction of SAW resonator equivalent circuit parameters and package parasitic[A].Proceedings of 1992 IEEE Frequency Control Symposium[C].New York:IEEE,1992:384-390.
    [10]刘桂礼,王艳林,李东.石英晶体谐振器电参数测量电路设计[J].北京机械工业学院学报,2008,3(1):23-26.
    [11]李凯丽,梁庭,洪应平等.无线耦合信号传输天线的设计和阻抗匹配[J].电视技术,2013,37(5):169-171.
    [12]陈伟,刘和关.基于Matlab的RF系统阻抗匹配设计[J].微计算机信息,2006,22(42):166-168.
    [13]陈磊,周世圆.基于matlab仿真的SAW应变测量激励电路设计[J].仪器仪表学报,2010,31(8):81-85.