| 发明名称 |
Dielectric ceramic for use in microwave device, a microwave dielectric ceramic resonator |
| 摘要 |
Dielectric ceramics a microwave device made of (Bi2O3)x(Nb2O5)1-x includes at least one of subcomponents of CuO and V2O5, wherein the composition ratio x is fallen into a range of 0.48</=x</=0.51, an atomic ratio AR1 defined by the following equation: AR1=(the number of Cu atoms of the CuO)/ARO, where ARO=(the number of Bi atoms of the (Bi2O3)x(Nb2O5)1-x)+(the number of Nb atoms of the (Bi2O3)x(Nb2O5)1-x) is fallen into a range of 0<AR1< 0.01, and another atomic ratio AR2 defined by the following equation: AR2=(the number of V atoms of the V2O5)/ARO is fallen into a range of 0<AR2</= 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 includes a step of firing a resonator element in nitrogen atmosphere under a condition of an oxygen concentration equal to or less than 1000 ppm at a temperature in a range from 875 DEG to 1000 DEG C.
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| 申请公布号 |
US5350639(A) |
申请公布日期 |
1994.09.27 |
| 申请号 |
US19920941961 |
申请日期 |
1992.09.08 |
| 申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
INOUE, TATSUYA;KAGATA, HIROSHI;KATO, JUNICHI;KAMEYAMA, ICHIRO |
| 分类号 |
H01P7/10;(IPC1-7):H01P7/00 |
主分类号 |
H01P7/10 |
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