Multilayered filter device
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United States of America Patent
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Dec 6, 2022
Grant Date -
Oct 21, 2021
app pub date -
Jun 29, 2021
filing date -
Mar 18, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A multilayered filter device includes a multilayer stack, a band pass filter, a first band elimination filter, and a second band elimination filter. The band pass filter and the first and second band elimination filters are each constructed using the multilayer stack. The band pass filter includes a plurality of first resonators with open ends. Each band elimination filter includes a connection path, and a second resonator coupled to the connection path. The connection path includes an impedance transformer. The second resonator includes a conductor line constituting a distributed constant line.
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