Patent ID: 11962061
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A directional coupler comprising:
a main line;
a sub-line electromagnetically coupled to the main line;
a coupling terminal;
a terminal circuit;
a control circuit configured to generate a control signal;
a first switching circuit configured to selectively connect a first end of the sub-line to the coupling terminal or the terminal circuit; and
a second switching circuit configured to selectively connect a second end of the sub-line to the coupling terminal or the terminal circuit,
wherein the second switching circuit is configured to connect the second end of the sub-line to the terminal circuit when the first switching circuit connects the first end of the sub-line to the coupling terminal,
wherein the second switching circuit is configured to connect the second end of the sub-line to the coupling terminal when the first switching circuit connects the first end of the sub-line to the terminal circuit, and
wherein the first switching circuit is configured to:
connect the first end of the sub-line to the coupling terminal at a different time than when the first switching circuit disconnects the first end of the sub-line from the terminal circuit based on the control signal, and
disconnect the first end of the sub-line from the coupling terminal at a different time than when the first switching circuit connects the first end of the sub-line to the terminal circuit based on the control signal.