Title:
MATCHING CIRCUIT AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/082551
Kind Code:
A1
Abstract:
A matching circuit (13A) is provided with a first port (P1), a second port (P2), an autotransformer (TA), a first capacitor (C1), and a second capacitor (C2). The autotransformer (TA) is provided with a first terminal (T1) connected to the first port (P1) side, a second terminal (T2) connected to the second port (P2) side, and a common terminal (T3) connected to the reference potential, and has a series parasitic inductor (Ls) and a parallel parasitic inductor (Lp). The first capacitor (C1) is shunt-connected to the second terminal (T2), and, together with the series parasitic inductor (Ls), constitutes a low-pass filter (LPF). The second capacitor (C2) is series-connected to between the first port (P1) and the first terminal (T1), and, together with the parallel parasitic inductor (Lp), constitutes a high-pass filter (HPF).
Inventors:
AKIYAMA HISASHI (JP)
Application Number:
PCT/JP2018/034140
Publication Date:
May 02, 2019
Filing Date:
September 14, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/38; H01Q1/50; H03H7/09; H04B1/04
Domestic Patent References:
| WO2016152603A1 | 2016-09-29 | |||
| WO2016114182A1 | 2016-07-21 | |||
| WO2015064138A1 | 2015-05-07 | |||
| WO2012153691A1 | 2012-11-15 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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