| 摘要 |
To obtain a nonreciprocal circuit device which has a simple structure, permitting easy fabrication and also has satisfactory electrical characteristics, and to obtain a manufacturing method of the nonreciprocal circuit device. A nonreciprocal circuit device (a two-port isolator) includes permanent magnets (41), a ferrite (32) to which a direct current magnetic field is applied by the permanent magnets (41), first and second central electrodes arranged on the ferrite (32), and a circuit substrate (20). A ferrite-magnet assembly (30) mounted on the circuit substrate (20) is covered with a resin layer (10). The resin layer (10) is composed of an innermost layer (11) made of a non-magnetic resin material and a magnetic resin layer (12) having a magnetic filler mixed therein. |
