Low loss glass ceramic composition with modifiable dielectric constant
US6171988A · kind A · utility
3Cited by
18References
4Claims
0Family size
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Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24926
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The dielectric constant of low loss tangent glass-ceramic compositions, such as cordierite-based glass ceramics, is modified over a range by selective addition of high dielectric constant ceramics, such as titanates, tantalates and carbides and metals, such as copper. The low loss tangent is retained or improved over a range of frequencies, and the low CTE of the glass-ceramic is maintained. BaTiO.sub.3, SrTiO.sub.3 and Ta.sub.2 O.sub.5 produce the most effective results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.