MULTIPLEXER, FILTER, AND COMMUNICATION DEVICE
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United States of America Patent
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Issued Date -
Aug 12, 2021
app pub date -
Apr 28, 2021
filing date -
Oct 29, 2018
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Abstract
A multiplexer (1) used in a communication device (5) includes an antenna (21) for a first frequency band group including 5GNR and an antenna (22) for a second frequency band group and includes a filter (12) for a first communication band and a filter (13) for a second communication band. The second frequency band group is higher than the first communication band, the second communication band is lower than the first communication band, the filter (12) includes a resonant circuit (31), an inductor (L1) connected to a node (n1) in a series arm path, and an inductor (L2) magnetically coupled with the inductor (L1).
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