Title:
MULTIPLEXER, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/180648
Kind Code:
A1
Abstract:
A hybrid multiplexer (1) is provided with a filter (10) which passes an HB high frequency signal, and a filter (20) which passes an MB high frequency signal. The filter (20) includes a matching circuit (21), a first resonance circuit configured from one of a LPF (22) and a HPF (23), and a second resonance circuit configured from the other of the LPF (22) and the HPF (23). The LPF (22) includes an inductor (Ls) and a parallel-arm resonator. The HPF (23) includes a series-arm resonator and an inductor (Lp). A resonance frequency of the parallel-arm resonator and an antiresonance frequency of the series-arm resonator are both positioned between an HB lower-end frequency and an HB higher-end frequency.
Inventors:
MATSUBARA HIROSHI (JP)
KATO MASANORI (JP)
KIDO SYUNSUKE (JP)
KATO MASANORI (JP)
KIDO SYUNSUKE (JP)
Application Number:
PCT/JP2018/010643
Publication Date:
October 04, 2018
Filing Date:
March 16, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/72; H03H7/075; H03H7/38; H03H7/46; H03H9/54; H03H9/64; H04B1/00; H04B1/52
Domestic Patent References:
| WO2007023643A1 | 2007-03-01 | |||
| WO2015041125A1 | 2015-03-26 | |||
| WO2013150814A1 | 2013-10-10 |
Foreign References:
| JPH1065489A | 1998-03-06 | |||
| JP2014033377A | 2014-02-20 | |||
| JP2003332885A | 2003-11-21 | |||
| JPH0555863A | 1993-03-05 | |||
| JP2017063315A | 2017-03-30 | |||
| JP2016092828A | 2016-05-23 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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