Title :
Reflection and scattering characteristics of reflectors in SAW tags
Author :
Han, Tao ; Wang, Weibiao ; Wu, Haodong ; Shui, Yongan
Author_Institution :
Dept. of Instrum. Eng., Shanghai Jiaotong Univ., Shanghai
fDate :
6/1/2008 12:00:00 AM
Abstract :
As a foundation of an optimal design for SAW tags,the reflection, scattering, and transmission of the reflector composed of a few electrodes are discussed. A source regeneration method based on Green´s function and the finite element method/boundary element method is used to obtain the reflection coefficient and the scattering coefficient for the short-circuited and open circuit reflectors. Examples are presented to show how one can use structure variance to satisfy the requirements for SAW tag design according to the reflection and scattering characteristics.
Keywords :
Green´s function methods; boundary-elements methods; electrodes; finite element analysis; radiofrequency identification; reflectivity; surface acoustic wave devices; Green´s function; boundary element method; electrodes; finite element method; open circuit reflectors; reflection coefficient; scattering coefficient; short-circuited reflectors; source regeneration method; surface acoustic wave tag design; Acoustic reflection; Acoustic scattering; Circuits; Electrodes; Finite element methods; Pulse modulation; Radiofrequency identification; Rayleigh scattering; Reflectivity; Surface acoustic waves; Acoustics; Computer Simulation; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Models, Theoretical; Scattering, Radiation;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2008.802
