Hitachi Metals, Ltd.

Minoru Nozu

Yasushi Kishimoto

Takefumi Terawaki

Kenji Kuramoto

A non-reciprocal circuit device comprising a first inductance element disposed between a first input/output port and a second input/output port, a second inductance element disposed between the second input/output port and a ground, a first capacitance element constituting a first parallel resonance circuit with the first inductance element, a second capacitance element constituting a second parallel resonance circuit with the second inductance element, a resistance element parallel-connected to the first parallel resonance circuit, and an impedance-adjusting means disposed between the first input/output port and the first inductance element.

Non-reciprocal circuit device

A resin casing for use in a non-reciprocal circuit device comprising an assembly of a ferrimagnetic body and a plurality of central conductors enclosing it, and a plurality of elongated flat capacitors connected to ends of the central conductors; the resin casing being constituted by a thin conductor plate having a substantially flat bottom portion and a resin frame injection-molded integrally with the thin conductor plate; the resin frame comprising sidewalls, and partition walls provided inside the sidewalls for defining a plurality of recesses for receiving the flat capacitors, a pair of opposing sidewalls being provided with external terminals constituted by the thin conductor plate; any bottoms of a plurality of the recesses being integrally constituted by a substantially flat bottom portion of the thin conductor plate; the recesses being formed such that all flat capacitors received in the recesses are aligned substantially in parallel with sidewalls having external terminals; and the assembly being disposed on the flat capacitors received in the recesses.

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Tottori-ken, Japan

Minoru Nozu