Simulation and design on SAW reflective delay line for wireless sensor application using coupling of modes

被引：0

作者：

ZHANG Yanhua XU Fangqian WANG Wen Zhejiang University of Media and Communication Zhejiang Institute of AcousticsChinese Academy of Sciences Beijing ^{[1
,1
,2
,1
,310018
,2
,100190
]}

机构：

来源：

Chinese Journal of Acoustics | 2011年 / 30卷 / 03期

关键词：

line; SAW; Simulation and design on SAW reflective delay line for wireless sensor application using coupling of modes;

D O I：

10.15949/j.cnki.0217-9776.2011.03.002

中图分类号：

TP212 [发送器（变换器）、传感器];

学科分类号：

080202 ;

摘要：

<正>This paper presents an optimal design on surface acoustic wave reflective delay line using coupling of modes（COM）model.The reflection coefficient S11of the SAW device is deduced to evaluate the device performance.Typical SAW reflective delay line consists of a piezoelectric substrate,an interdigital transducer（IDT）and several reflectors positioned along the acoustic propagation direction.The influences of the design parameters of the device, such as structure of the IDT,reflector types,etc.on device performance are investigated,and the optimal design parameters are determined.Based on these parameters,a 434 MHz SAW reflective delay line with single phase unidirectional transducers and three shorted grating reflectors is fabricated on 41°YX LiNbO3.The measured S11agrees well with the simulated one.Sharp reflection peaks,high signal noise ratio（S/N）,and low spurious noise between the reflection peaks are observed.

引用

页码：272 / 278

页数：7

共 3 条

[1]

Coupling-of-modes analysis of SAW devices .2 Plessky PV,Koskela J. Int.J.High Speed El.and Syst . 2000

[2]

Quartz pressure sensor based on SAW reflectivedelay line .2 Holger S,Gerd S. IEEE Ultras Symp Proc . 1996

[3]

Overview of design challenges for single phase unidirectional SAW filters .2 Hartmann C S,Write P V. IEEE Ultrasonic Symp.Proc . 1989

← 1 →