Garnet ferrite for low-insertion-loss non-reciprocal circuit, method for preparing the same, and non-reciprocal circuit device including the same
US6780344B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Oct 23, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Oct 23, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/79
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A garnet ferrite used for a non-reciprocal circuit device contains Fe in an amount lower than the value derived from stoichiometry by 0.5% to 5%, and more preferably by 1% to 3%. The garnet ferrite can exhibit a low insertion loss in a high-frequency band of more than 5 MHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.