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US 2006/0152296 A1Published application
Non-reciprocal circuit element
AssigneeKoninklijke Philips Electronics N.V.
InventorRainer Pietig
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AssigneeKoninklijke Philips Electronics N.V.
InventorRainer Pietig
Estimating the term…
The invention relates to a non-reciprocal circuit element (1) having a plurality of strip conductor elements (2) insulated electrically from one another, which conductor elements are embedded in a multilayer core (3) of ferrimagnetic material and are arranged in superposed conductor planes in such a way that the conductor elements (2) cross over one another in at least one crossover area (4, 5). To provide such a circuit element, which is particularly cost-effective to produce and which is suitable in particular for use in mobile phones, the invention proposes that the core (3) comprises, at least in the crossover area of the conductor elements (2), hard magnetic material, which is permanently magnetized in a spatial direction perpendicular to the conductor planes.
A non-reciprocal circuit element having a plurality of strip conductor elements (2) insulated electrically from one another, which conductor elements are embedded in a multilayer core (3) of ferrimagnetic material and are arranged in superposed conductor planes in such a way that the conductor elements (2) cross over one another in at least one crossover area (4, 5), characterized in that the core (3) comprises, at least in the area (4, 5) where the conductor elements (2) cross over one another, hard magnetic material, which is permanently magnetized in a spatial direction perpendicular to the conductor planes.
A method for producing a non-reciprocal circuit element (1), having the method steps of:
Dependencies are inferred from the claim text.