INTEGRATED MICROWAVE SYSTEM HAVING A HYBRID STRUCTURE WITH A NONMAGNETIC DIELECTRIC CERAMIC SUBSTRATE
First Claim
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2. An integrated microwave system as claimed in claim 1 wherein the ferrite materials of the substrate and the system elements have a cubic spinel structure.
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Abstract
An integrated microwave system having a hybrid structure using a nonmagnetic dielectric ceramic substrate consisting of a sintered ferrite having a lower Curie point than the lowest operating temperature of the system. The system includes two or more interconnected elements integrally united with the substrate. Each of these elements consists essentially of a soft magnetic ferrite which is sintered to the substrate.
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9 Claims
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2. An integrated microwave system as claimed in claim 1 wherein the ferrite materials of the substrate and the system elements have a cubic spinel structure.
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3. An integrated microwave system as claimed in claim 2, wherein the said ferrite materials consist of manganese-magnesium ferrites.
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4. An integrated microwave system as claimed in claim 3, wherein the substrate ferrite is a manganese-magnesium-aluminum ferrite.
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5. An integrated microwave system as claimed in claim 1 wherein the ferrite materials of the substrate and the system elements have a garnet structure.
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6. An integrated microwave system as claimed in claim 5, wherein the said ferrite materials consist of yttrium-iron garnet.
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7. An integrated microwave system as claimed in claim 6, wherein the substrate ferrite is an yttrium-aluminum-iron garnet.
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8. An integrated microwave system as claimed in claim 6 in which a portion of the iron in the yttrium-iron garnet has been replaced by silicon and calcium.
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9. An integrated microwave system as claimed in claim 7 in which a portion of the iron in the yttrium-iron garnet has been replaced by silicon and calcium.
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