Patent ID: 11894597
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A directional coupler comprising:
a substrate having a first principal surface and a second principal surface opposing each other;
a first main line and a second main line each including a conductor pattern provided in or on the substrate, and connected in parallel to each other; and
a first sub-line including a conductor pattern provided in or on the substrate,
wherein the first sub-line is disposed at a position at least partially overlapping with the first main line in a plan view when seen in a thickness direction orthogonal to the first principal surface and the second principal surface,
the first principal surface is a connection surface to another substrate to which a high frequency signal detected by the directional coupler is transmitted, and
the first main line is disposed closer to a side of the first principal surface than the first sub-line.