Method for manufacturing a dielectric ceramic composition dielectric ceramic and multilayer high frequency device
US5629252A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1996 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Jun 13, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/1254
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dielectric ceramic composition that can be sintered at a low temperature of around 1000.degree. C. and also can have a high dielectric constant, a high Q value and small temperature coefficient at a resonant frequency includes a glass component that promotes sintering. The dielectric ceramics include: the main component comprising calcium oxide, magnesium oxide, niobium oxide and titanium oxide and expressed by the Formula: Ca{(Mg.sub. 1/3 Nb.sub. 2/3).sub.1-x Ti.sub.x }O.sub.3 (wherein X is more than 0 not more than 0.50) within the range of not less than 40 parts by weight nor more than 98 parts by weight; the accessory component comprising at least one selected from SiO.sub.2 and B.sub.2 O.sub.3 within the range of not less than 2 parts by weight nor more than 60 parts by weight; and at least one oxide selected from the group consisting of MgO, NiO, CuO, MNO.sub.2 and WO.sub.3 within the range of not less than 0.1 parts by weight nor more than 10 parts by weight. Consequently, the dielectric ceramic composition of the present invention can be sintered at low temperature. The dielectric ceramic composition also has a stability in composition and high Q value, which can used for…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.