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US06787970B2 Tuning of packaged film bulk acoustic resonator filters 有权
封装薄膜体声波谐振滤波器的调谐

Tuning of packaged film bulk acoustic resonator filters
摘要:
Packaged film bulk acoustic resonators may be tuned after packaging by exposing them to irradiation. In one embodiment, transparent covers may be provided so that the film bulk acoustic resonator filter may be exposed to laser irradiation to either add or remove material from the filter and to thereby adjust its frequency.
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