Dielectric ceramic for use in microwave device, a microwave dielectric ceramic resonator dielectric ceramics
US5350639A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1992 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Sep 8, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12882
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Dielectric ceramics a microwave device made of (Bi.sub.2 O.sub.3).sub..times. (Nb.sub.2 O.sub.5).sub.1-x includes at least one of subcomponents of CuO and V.sub.2 O.sub.5, wherein the composition ratio x is fallen into a range of 0.48.ltoreq..times..ltoreq.0.51, an atomic ratio AR1 defined by the following equation: EQU AR1=(the number of Cu atoms of the CuO)/ARO, where PA0 ARO=(the number of Bi atoms of the (Bi.sub.2 O.sub.3).sub.x (Nb.sub.2 O.sub.5).sub.1-x)+(the number of Nb atoms of the (Bi.sub.2 O.sub.3).sub.x (Nb.sub.2 O.sub.5).sub.1-x) PA0 is fallen into a range of 0<AR1< 0.01, and another atomic ratio AR2 defined by the following equation: EQU AR2=(the number of V atoms of the V.sub.2 O.sub.5)/ARO is fallen into a range of 0<AR2.ltoreq. 0.02. Further, a microwave dielectric resonator includes a microstrip conductor formed between a plurality of first sheet-shaped dielectric layers and a plurality of second sheet-shaped dielectric layers, wherein the microstrip conductor is electrically connected to one external electrode and the dielectric layers are made of the above-mentioned dielectric ceramics. Furthermore, a process of making a microwave dielectric ceramics resonator i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.