Title :
Narrow electrodes on YZ-LiNbO3 as an alternative to etched grooves for dispersive delay lines
Author :
Härmä, Sanna ; Kim, Che-Uk ; Balashov, Sergei M. ; Plessky, Victor P.
Author_Institution :
Helsinki Univ. of Technol., Helsinki
fDate :
2/1/2008 12:00:00 AM
Abstract :
Narrow, open-circuited aluminum electrodes can provide controllable, weak reflectivity necessary for many applications such as surface acoustic wave (SAW) tags and dispersive delay lines (DDLs). We show, using finite- and boundary element method (FEM-BEM) based simulations and experiments, that a reflectivity of 0.3% per wavelength can be achieved easily and controlled by varying the electrode width.
Keywords :
aluminium; boundary-elements methods; electrodes; finite element analysis; reflectivity; surface acoustic wave delay lines; boundary element method; dispersive delay lines; etched grooves; finite element method; open-circuited aluminum electrodes; reflectivity; surface acoustic wave tags; Acoustic waves; Aluminum; Delay lines; Dispersion; Electrodes; Etching; Frequency estimation; Manufacturing; Reflectivity; Surface acoustic waves;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2008.667
