Patent ID: 7138889

Claim:
A single-port acoustic resonator device having an input impedance at said port that exhibits at least one electrical resonance within a prescribed frequency band, said prescribed frequency band having a bandwidth that is less than one-half of a central frequency located at the center of said prescribed frequency band, said resonator device comprising: a transducer/resonator comprising a layer of piezoelectric material, a first electrode layer comprising an electrically conducting material and a second electrode layer comprising an electrically conducting material, said layer of piezoelectric material being situated between said first electrode layer and said second electrode layer, and said transducer/resonator exhibiting an acoustic resonance within said prescribed frequency band; a mechanical resonator comprising at least one layer of a solid acoustically conductive material, said mechanical resonator exhibiting an acoustic resonance within said prescribed frequency band; an acoustic coupler, said acoustic coupler comprising at least one layer of a solid acoustically conductive material, said acoustic coupler being physically situated between said transducer/resonator and said mechanical resonator for acoustically coupling said transducer/resonator with said mechanical resonator, said transducer/resonator, said acoustic coupler and said mechanical resonator further comprising a stacked integral assembly.