| 摘要 |
A nonreciprocal circuit device includes permanent magnets, a ferrite core to which a DC magnetic field is applied from the permanent magnets, center electrodes disposed on the ferrite core, a circuit substrate, a magnetic yoke, and an electromagnetic shield plate. The ferrite core and the permanent magnets are longitudinally disposed on the circuit substrate, and the yoke has a ring-like shape so as to surround side surfaces of the ferrite core and the permanent magnets. The electromagnetic shield plate includes a dielectric substrate and a shield conductor made of a nonmagnetic metal conductive film on the dielectric substrate. The shield conductor includes opening areas having slits.
|
