MULTIPLEXER, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE

WIPO Patent Application WO/2019/172033

A1

A multiplexer (1) is provided with: a first filter (11), a second filter (12), and a third filter (13) that respectively allow different first, second, and third frequency bands to pass therethrough; a first connection point (21) that is connected to a common terminal (P0); a second connection point (22) to which one end of the first filter (11) and one end of the second filter (12) are connected; a first switch (31) that switches between connection and disconnection of the first connection point (21) and the second connection point (22); a reactance element (41) one end of which is connected to a signal path that connects the second connection point (22) and the first switch (31); a second switch (32) that switches between connection and disconnection of the first connection point (21) and the other end of the reactance element (41); and a third switch (33) that switches between connection and disconnection of the first connection point (21) and one end of the third filter (13), wherein, among the first, second, and third frequency bands, the first and second frequency bands are adjacent to each other.

NANIWA YUSUKE (JP)
TAKEUCHI MORIO (JP)
TANI MASAKAZU (JP)

PCT/JP2019/007484

September 12, 2019

February 27, 2019

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MURATA MANUFACTURING CO (JP)

H04B1/00; H03H7/38; H03H7/46; H03H9/70; H03H9/72; H04B1/18; H04B1/38

WO2017073509A1	2017-05-04
WO2010053131A1	2010-05-14

JP2018026795A	2018-02-15
US20170244432A1	2017-08-24
US20180019509A1	2018-01-18

YOSHIKAWA, Shuichi et al. (JP)

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