Title:
HIGH FREQUENCY CIRCUIT AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/181756
Kind Code:
A1
Abstract:
The present invention facilitates impedance matching between a power amplifier and a filter. A high frequency circuit (1) comprises a power amplifier (2), a plurality of transmission filters (3), a switch, a plurality of first matching circuits (5), and a second matching circuit (6). The switch switches which transmission filter (3) among the plurality of transmission filters (3) is connected to the power amplifier (2). The plurality of first matching circuits (5) are connected between the plurality of transmission filters (3) and the switch. The second matching circuit (6) is connected between the power amplifier (2) and the switch, and includes a transmission line transformer (61).
Inventors:
TAHARA KENJI
YOSHIMI SYUNJI
IKARASHI KAZUHIRO
TANAKA YUSUKE
SHIMAMOTO KENICHI
HASE MASATOSHI
YOSHIMI SYUNJI
IKARASHI KAZUHIRO
TANAKA YUSUKE
SHIMAMOTO KENICHI
HASE MASATOSHI
Application Number:
PCT/JP2020/042649
Publication Date:
September 16, 2021
Filing Date:
November 16, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01L23/12; H03H7/38; H04B1/00; H05K3/46
Domestic Patent References:
| WO2011001769A1 | 2011-01-06 | |||
| WO2019082551A1 | 2019-05-02 |
Foreign References:
| JP2018186372A | 2018-11-22 | |||
| JP2008288769A | 2008-11-27 | |||
| JP2018042100A | 2018-03-15 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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