Electrical device and method utilizing a positive-temperature-coefficient ferroelectric capacitor
US5638252A · kind A · utility
14Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Jun 14, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G7/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A capacitor (20) is fabricated using a ferroelectric material (28) such as a layered perovskite material of the Aurivillius family. The capacitor (20) has a positive temperature coefficient (PTC) of capacitance. When used in an electrical device other than a memory device in place of a conventional capacitor, the PCT capacitor (20) provides inherent temperature compensation of the signal of the device when the device is operated at different temperatures below the Curie temperature of the ferroelectric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.