Patent ID: 6731183
Filing Date: 2004-05-04
Classification: H01P

Abstract:
A non-reciprocal circuit device comprising a plurality of central conductors overlapping with electric insulation from each other at a predetermined angle, a magnetic body disposed in contact with or close to said central conductors, matching capacitors, a permanent magnet disposed for applying a DC magnetic field to said central conductors and said magnetic body, and metal cases for receiving these parts and serving as a magnetic yoke, wherein at least said matching capacitors are integrally constituted in a laminate module having a substantially flat lower surface, and said laminate module is disposed on a substantially flat surface of a composite base comprising an insulation member and conductor plates,said laminate module having a ground electrode for connecting said capacitors to a ground on a substantially entire lower surface thereof, said composite base comprising a ground electrode connected to said central conductors and said capacitors of said laminate module and terminal electrodes connected to said central conductors and said capacitors of said laminate module on the same plane, said ground terminals connected to said ground electrode and said input/output terminals connected to said terminal electrodes being provided as external terminals on side surfaces and/or a lower surface of said laminate module, wherein said ground electrode of said composite base and at least one ground terminal are integrally formed by the same conductor plate, wherein terminal electrodes and at least one input/output terminal are integrally formed by the same conductor plate, and said terminal electrodes are not electrically connected to each other within the same conductor plate, and wherein said ground electrode of said laminate module is disposed directly on a substantially entire upper surface of a ground electrode of said composite base.