Ceramic ferroelectric composite material - BSTO-ZrO.sub.2
US5486491A · kind A · utility
180Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1994 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Mar 7, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/38
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A novel ceramic ferroelectric material having a low dielectric constant, loss and high tunability. The material is a composite comprising Barium Strontium Titanate (BSTO) and a ceramic material having a low dielectric constant. The preferred composite is represented by Ba.sub.1-x Sr.sub.x TiO.sub.3 --ZrO.sub.2, wherein x is greater than 0.00, but less than or equal to 0.70, and wherein the percent weight ratio between Ba.sub.1-x Sr.sub.x TiO.sub.3 and ZrO.sub.2 ranges from approximately 99%-40% and 1%-60%, respectively. The novel materials possess superior electronic properties; and they may be employed in various antenna systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.