| 摘要 |
PROBLEM TO BE SOLVED: To achieve low loss and/or high isolation in a magnetic resonance type isolator.SOLUTION: A magnetic resonance type isolator includes: a ferrite 10 having a first major surface 11 and a second major surface 12 which face each other; a main line 15 which is disposed on the first major surface 11 of the ferrite 10 and does not resonate; a sub line 20 branched from the main line 15 and wrapping around the second major surface 12; and permanent magnets 29 applying a DC magnetic field to the ferrite 10. One end of the main line 15 is connected with one end of a first conductor 17a provided on the second major surface 12 through a first through hole conductor 16a provided at the ferrite 10, and the other end of the first conductor 17a serves as a first opening P1. The other end of the main line 15 is connected with one end of a second conductor 17b provided on the second major surface 12 through a second through hole conductor 16b provided at the ferrite 10. The other end of the second conductor 17b serves as a second opening P2. An end part of the sub line 20 serves as a third opening P3, a reactive element C is connected with the third opening P3, and the reactive element C is connected with ground. |
