Elastic wave device with self-adjusting frequency

Abstract

The invention relates to an elastic wave device 10000 which comprises one or more variable impedance means 1003, 2003, 3003, 10400, in which each variable impedance means 1003, 2003, 3003, 10400 comprises a capacitor configured to change capacitance as a function of temperature variation to compensate for a frequency shift of an operating frequency of the elastic wave device caused by the temperature variation; a first electromechanical device 3, 11130, in particular a first transducer 3, 11130, and a second electromechanical device 5, 11140, in particular a second transducer 5, 11140 or an electrode array configured to reflect at least partially elastic waves emitted by the first electromechanical device 3, 11130;and a network 4000, 11150 of at least one electrode 1000, 2000, 3000 located between the first electromechanical device 3, 11130 and the second electromechanical device 5, 11140 in the direction of propagation of the elastic waves. Figure for the abbreviation: Figure 12;