Electronically tunable, low-loss ceramic materials including a tunable dielectric phase and multiple metal oxide phases
US6774077B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/462
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Electronically tunable dielectric materials having favorable properties are disclosed. The electronically tunable materials include an electronically tunable dielectric phase such as barium strontium titanate in combination with at least two additional metal oxide phases. The additional metal oxide phases may include, for example, oxides of Mg, Si, Ca, Zr, Ti and Al. The electronically tunable materials may be provided in bulk, thin film and thick film forms for use in devices such as phased array antennas, tunable filters and the like. The materials are useful in many applications, including the area of radio frequency engineering and design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.