| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-port isolator at a low cost capable of decreasing an insertion loss without impairing miniaturizing. SOLUTION: The two port-isolator comprises: a microwave ferrite 20; first and second center electrodes 21, 22 insulated and in crossing on the ferrite with each other; a permanent magnet 9 for applying a DC magnetic field to the ferrite 20; and a multilayer board 30 on which connection electrodes 1A, 1B, 1B', 1C for the center electrodes and first and second matching capacitors are formed, wherein the components above are contained in a case 8 for molding a magnetic metallic plate and a magnetic gap 4. The Q value of the second matching capacitor is selected greater than the Q value of the first matching capacitor. COPYRIGHT: (C)2005,JPO&NCIPI
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