Patent ID: 7586391
Filing Date: 2009-09-08
Classification: H03H,Y10T

Abstract:
1. A switchable filter comprising: a first acoustic resonator including a plurality of first electrodes, and at least one first resonant layer between said first electrodes; and a second acoustic resonator including a plurality of second electrodes, and at least one second resonant layer between said second electrodes, said second acoustic resonator being acoustically coupled with said first acoustic resonator, at least one of the at least one first resonant layer and the at least one second resonant layer comprising electrostrictive material; at least one of said first electrodes and at least one of said second electrodes being arranged between said first resonant layer and said second resonant layer; the electrostrictive material adjusting a resonance and a filter switching of said first and second acoustic resonators as a function of a control voltage applied to said first and second acoustic resonators.