Surface acoustic wave filter with subset of velocity adjusted resonators
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United States of America Patent
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-
Dec 12, 2023
Grant Date -
May 6, 2021
app pub date -
Dec 14, 2020
filing date -
Oct 31, 2019
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An acoustic wave resonator is disclosed. The acoustic wave resonator can include a piezoelectric layer, an interdigital transducer electrode positioned over the piezoelectric layer, a temperature compensation layer positioned over the interdigital transducer electrode, and a velocity reduction cover that extends over at least a portion of a central region of the interdigital transducer electrode and over at least a portion of the temperature compensation layer. The velocity reduction cover is arranged to cause a velocity of an acoustic wave generated by the acoustic wave resonator to be reduced.
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