定向耦合器;DIRECTIONAL COUPLER

摘要

本发明提供一种能对主线路与副线路之耦合度进行微调之定向耦合器。该定向耦合器之特征在于具备：积层复数个电介质层而构成之积层体；将第1主线路部及第2主线路部依次串联连接而构成、且设置于前述积层体之主线路；以及将与前述第1主线路部电磁耦合之第1副线路部以及与前述第2主线路部电磁耦合之第2副线路部依次串联连接而构成、且设置在前述积层体中、较前述主线路更靠积层方向之一侧之位置之副线路；前述第2主线路部设置于与设置前述第1主线路部之前述电介质层不同之前述电介质层，前述第2副线路部设置于与设置前述第1副线路部之前述电介质层不同之前述电介质层。; a main line that includes a first main line part and a second main line part which are connected in series to each other in this order and that is provided in the multilayer body; and a sub-line that includes a first sub-line part and a second sub-line part which are connected in series to each other in this order, the first sub-line part being electromagnetically coupled to the first main line part, the second sub-line part being electromagnetically coupled to the second main line part, and the sub-line being provided on one side in a stacking direction with respect to the main line in the multilayer body. The second main line part is provided on a dielectric layer that is different from a dielectric layer on which the first main line part is provided and/or the second sub-line part is provided on a dielectric layer that is different from a dielectric layer on which the first sub-line part is provided.