Murata Manufacturing Co., Ltd.

Yuuta Miyazaki

Daisuke Tokuda

Ryangsu Kim

Katsuya Shimizu

Naoya Akashi

A directional coupler includes a main line, a sub-line, an output terminal, a first termination circuit, and a termination switch. The sub-line includes a first end and a second end. The output terminal is connected to one end of the first end and the second end. The first termination circuit connects a first output path, which connects the one end and the output terminal, to a ground. The termination switch switches between connection and non-connection between the first output path and the first termination circuit.

Directional coupler, high-frequency module, and communication device

A directional coupler includes a first main line, a second main line, first sub-lines, second sub-lines, a first output terminal, a second output terminal, a first inductor, and a second inductor. The first output terminal is configured to be coupled to the first sub-lines. The first output terminal is configured to output a first detection signal corresponding to a first radio-frequency signal transferred through the first main line. The second output terminal is configured to be coupled to the second sub-lines. The second output terminal is configured to output a second detection signal corresponding to a second radio-frequency signal transferred through the second main line. The first inductor is provided in a first signal path including the first output terminal. The second inductor is provided in a second signal path including the second output terminal.

Directional coupler, radio-frequency module, and communication device

A switch circuit provided on a substrate includes a first series switch and a second series switch disposed in series on a path connecting a first terminal and a second terminal, a third series switch and a fourth series switch disposed in series on a path connecting the first terminal and a third terminal, a first shunt switch connected to a common ground terminal and a first node between the first series switch and the second series switch, and a second shunt switch connected to the common ground terminal and a second node between the third series switch and the fourth series switch.

Growing community of inventors

Kyoto, Japan

Yuuta Miyazaki