A comprehensive model of the electrical response of SAW devices submitted to thermal perturbation
| Affiliation auteurs | !!!! Error affiliation !!!! |
| Titre | A comprehensive model of the electrical response of SAW devices submitted to thermal perturbation |
| Type de publication | Conference Paper |
| Year of Publication | 2014 |
| Auteurs | Laroche T, Garcia J, Courjon E, Ballandras S, Daniau W |
| Conference Name | 2014 EUROPEAN FREQUENCY AND TIME FORUM (EFTF) |
| Publisher | IEEE |
| Conference Location | 345 E 47TH ST, NEW YORK, NY 10017 USA |
| ISBN Number | 978-1-4799-5252-6 |
| Mots-clés | electrical response, Langasite (LGS), mixed matrix model, Surface Acoustic Wave (SAW), Temperature perturbation |
| Résumé | A comprehensive model for computing the electrical response of surface acoustic wave (SAW) devices is proposed in this paper. Based on a mixed-matrix analysis, it allows for the prediction of any SAW device admittance/impedance at any temperature. In that purpose, the temperature dependences of the wave velocity of course but also of the reflexion coefficient, directivity, conductance and capacitance are established using polynomial developments. The interest of this approach is illustrated for SAW devices on directive crystal cuts for which dramatic changes of the SAW parameters versus temperature may occur, such as the (YXlt)/48.5 degrees/26.7 degrees Langasite (LGS) cut. First assessment elements are shown to illustrate the importance of accurately designing SAW devices operating on extended temperature range. |