LADDER-TYPE FILTER, AND DUPLEXER AND MODULES WITH LADDER-TYPE FILTER
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United States of America Patent
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Issued Date -
Apr 25, 2024
app pub date -
Oct 18, 2023
filing date -
Oct 18, 2023
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Abstract
A ladder-type filter includes a plurality of series arms and a plurality of parallel arms, in which one of the parallel arms does not have resonance characteristic is arranged in parallel between two series arm resonators of the plurality of series arms. The ladder-type filter may be included in a duplexer and/or a module.
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