US 12,244,050 B2
Directional coupler, high-frequency module, and communication apparatus
Koji Furutani, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Nov. 22, 2022, as Appl. No. 18/057,951.
Claims priority of application No. 2021-214796 (JP), filed on Dec. 28, 2021.
Prior Publication US 2023/0208003 A1, Jun. 29, 2023
Int. Cl. H01P 5/18 (2006.01)
CPC H01P 5/18 (2013.01) 13 Claims
OG exemplary drawing
 
1. A directional coupler comprising:
a main line;
a first sub-line;
a second sub-line;
a termination circuit configured to terminate the first sub-line or the second sub-line;
a first selector switch configured to selectively connect the first sub-line to the termination circuit in a first mode, and selectively connect the second sub-line to the termination circuit in a second mode; and
a second short-circuiting switch configured to short-circuit both ends of the second sub-line in the first mode.