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Title:
MULTIPLEXER, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/172033
Kind Code:
A1
Abstract:
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.

Inventors:
NANIWA, Yusuke (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
TAKEUCHI, Morio (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
TANI, Masakazu (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2019/007484
Publication Date:
September 12, 2019
Filing Date:
February 27, 2019
Export Citation:
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Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
H04B1/00; H03H7/38; H03H7/46; H03H9/70; H03H9/72; H04B1/18; H04B1/38
Domestic Patent References:
WO2017073509A12017-05-04
WO2010053131A12010-05-14
Foreign References:
JP2018026795A2018-02-15
US20170244432A12017-08-24
US20180019509A12018-01-18
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, 〒5320011, JP)
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