Tuneable microwave devices including fringe effect capacitor incorporating ferroelectric films
US5721194A · kind A · utility
179Cited by
13References
23Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/866
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a tuneable fringe effect capacitor for conducting radio frequency energy. The capacitor includes a thin film of ferroelectric material, a pair of films of a conductive material deposited on the ferroelectric film with a gap between the films, and a substrate for the ferroelectric material and the conductive films. The capacitance value across the gap is varied by applying a voltage to the ferroelectric material and thereby altering the dielectric constant of the ferroelectric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.