Title:
HIGH FREQUENCY CIRCUIT, HIGH FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/100260
Kind Code:
A1
Abstract:
The present invention suppresses variation between the impedances in the communication bands of a plurality of filters viewed from an antenna terminal. In a high frequency circuit (1), a first switch (4) is connected to an antenna terminal (2). A second switch (3) is connected to the antenna terminal (2) via the first switch (4). A first filter (6) is an elastic wave filter connected to the first switch (4) via the second switch (3), and passes a high frequency signal in a first communication band. A second filter (7) is an elastic wave filter connected to the first switch (4) not via the second switch (3), and passes a high frequency signal in a second communication band that is higher in frequency than the first communication band. The high frequency circuit (1) is further provided with a capacitor (8). The capacitor (8) is between the first switch (4) and the second switch (3) and is connected in series to the first switch (4) and the second switch (3).
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Inventors:
TANI MASAKAZU
Application Number:
PCT/JP2020/029780
Publication Date:
May 27, 2021
Filing Date:
August 04, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/38; H04B1/00; H04B1/40
Domestic Patent References:
| WO2019054176A1 | 2019-03-21 | |||
| WO2019004152A1 | 2019-01-03 | |||
| WO2018212048A1 | 2018-11-22 |
Foreign References:
| JP2018026795A | 2018-02-15 | |||
| JP2019068205A | 2019-04-25 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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