| 摘要 |
The objective of the invention is to improve the isolation characteristic, broaden the relative bandwidth and stabilize the property in a non-reciprocal circuit element. A non-reciprocal circuit element includes a first center electrode (L1) and a second center electrode (L2) isolatedly cross each other on a ferrite to which a DC magnetic field is applied by an eternal magnet. One end (P1) of the first center electrode (L1) is connected to a first unbalanced input/output terminal (P3) and also connected to one (P5) of balanced input/output terminals, while the other end of the first center electrode (L1) is connected to the ground. One end (P2) of the second center electrode (L2) is connected to the other (P6) of the balanced input/output terminals and also connected to a second unbalanced input/output terminal (P4), while the other end of the second center electrode (L2) is connected to the ground. The one end (P1) of the first center electrode (L1) is connected to the ground via a first capacitance element (C1), while the one end (P2) of the second center electrode (L2) is connected to the ground via a second capacitance element (C2). |
