This application claims priority from Japanese Patent Application No. 2019-078367 filed on Apr. 17, 2019. The content of this application is incorporated herein by reference in its entirety.

BACKGROUND

The present disclosure relates to a mount component and a module and more particularly relates to a mount component for forming a directional coupler.

A directional coupler is a basic element that is widely used in wireless devices such as mobile terminal devices (for example, refer to International Publication No. 2012/017713).

Recently, in response to demands for higher performances in wireless devices, directional couplers have been required to have lower distortion and lower loss.

BRIEF SUMMARY

Accordingly, the present disclosure provides a mount component that is suitable for forming a directional coupler that is excellent in terms of low distortion and low loss and to provide a module that includes a directional coupler formed using this directional coupler.

An embodiment of the present disclosure provides a mount component that is a mount component for forming a directional coupler consisting of or comprising a main line and a sub line. The sub line has a first end and a second end and outputs part of a signal transmitted along the main line as a detection signal to a coupling terminal. Out of the main line and the sub line, only the sub line is formed on or in the mount component.

In addition, an embodiment of the present disclosure provides a module that includes: a mounting substrate on or in which a main line is formed; and the above-described mount component, which is mounted on the mounting substrate. A directional coupler is formed by the main line and the sub line, which is formed on or in the mount component.

According to the mount component of the embodiment of the present disclosure, when a directional coupler consisting of or comprising a main line and sub line is formed using the mount component, the mount component includes only the sub line and does not include the main line and a connection structure for the main line.

Typically, a main line inside a mount component is thinner than an external signal line along which a main signal is transmitted, and therefore in the case where the main line is provided inside a mount component and the main signal is brought into the inside of the mount component, insertion loss in the main line inside the mount component and reflection loss in the connection structure are likely to increase. Furthermore, when the main signal is brought into the inside of the mount component, the strong electromagnetic field of a main signal is likely to reach the substrate, electrodes, elements, and so on of the mount component, and therefore the main signal is likely to become distorted. Regarding this point, insertion loss in a main line inside the mount component and reflection loss in a connection structure of the mount component are not generated in a directional coupler formed using a mount component that does not bring the main signal into the inside thereof.

Thus, a mount component that is suitable for forming a directional coupler that is excellent in terms of low distortion and low loss and a module that includes a directional coupler formed using this directional coupler can be obtained.

Other features, elements, characteristics and advantages of the present disclosure will become more apparent from the following detailed description of embodiments of the present disclosure with reference to the attached drawings.

