Elastic wave device with switching capability

Abstract

A filter device comprising: a variable impedance means; a first electromechanical device, in particular, a first transducer, and a second electromechanical device, in particular, a second transducer or an electrode array configured to reflect at least partially elastic waves emitted by the first electromechanical device, an array of at least one electrode located between the first electromechanical device and the second electromechanical device in the direction of propagation of the elastic waves, wherein at least one electrode of the array of at least one electrode is connected to an electrical potential via the variable impedance means, the at least one electrode representing a channel corresponding to the at least one electrode, respectively; a switching means configured to select a specific channel by applying specific boundary conditions to the filter device via the variable impedance means.

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