Title:
HIGH-FREQUENCY CIRCUIT, HIGH-FREQUENCY MODULE, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/250734
Kind Code:
A1
Abstract:
The present invention improves both the filter characteristic at the time of transmission and filter characteristic at the time of reception of one filter. A filter (2) allows a transmission signal in a predetermined frequency band to pass from a second input/output terminal (22) to a first input/output terminal (21), and allows a reception signal in the predetermined frequency band to pass from the first input/output terminal (21) to the second input/output terminal (22). A first common terminal (30) of a first switch (3) is connected to the second input/output terminal (22). A first terminal (31) and a second terminal (32) of the first switch (3) are exclusively connectable to the first common terminal (30). A second common terminal (40) of a second switch (4) is connected to a ground terminal (23) of the filter (2). A first selection terminal (41) and a second selection terminal (42) of the second switch (4) are exclusively connected to the second common terminal (40). Only the first selection terminal (41) out of the first selection terminal (41) and the second selection terminal (42) is connected to the ground via a reactance element (10).
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Inventors:
MATSUMOTO SHOU
Application Number:
PCT/JP2020/021617
Publication Date:
December 17, 2020
Filing Date:
June 01, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/12; H03H7/38; H03H9/64; H04B1/44
Domestic Patent References:
| WO2019082671A1 | 2019-05-02 |
Foreign References:
| JP2000114804A | 2000-04-21 | |||
| US20040067771A1 | 2004-04-08 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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