专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2002059058A1 MICROWAVE DIELECTRIC CERAMIC COMPOSITION 审中-公开
标题翻译：微波电介质陶瓷组合物
公开(公告)号：WO2002059058A1
公开(公告)日：2002-08-01
申请号：PCT/JP2001/003588
申请日：2001-04-25
申请人： SUMITOMO SPECIAL METALS CO., LTD , FUKAGAWA, Tomoki , NISHIKAWA, Kazuhiro
发明人： FUKAGAWA, Tomoki , NISHIKAWA, Kazuhiro
IPC分类号： C04B35/462
CPC分类号： C04B35/475 , C04B35/462 , C04B35/465 , C04B35/50 , C04B35/6262 , C04B2235/3201 , C04B2235/3203 , C04B2235/3208 , C04B2235/3213 , C04B2235/3224 , C04B2235/3227 , C04B2235/3232 , C04B2235/3298
摘要： An object of the present invention is to obtain a dielectric ceramic composition wherein the dielectric constant ε is large, the temperature coefficient τf of the resonance frequency is close to 0, and which has a large Q value, by adding to and blending with a ceramic composition whose τf of the resonance frequency is large on the plus side a ceramic composition whose temperature coefficient τf is large on the minus side. In an Li 2 O-R 2 O 3 -TiO 2 -based composition where R is one or two or more of Nd, Sm, Pr and La, an improved dielectric constant ε can be achieved by introducing a specific quantity of Bi 2 O 3 , and τf can be shifted to the plus side and in addition a considerable improvement in Qf achieved by introducing a specific quantity of MO (where M is one or two of Ca and Sr). Furthermore, by introducing a specific quantity of Na 2 O together with the MO (where M is one or two of Ca and Sr), in particular in the case of material of εr≥ 150, it is possible to control τf to the vicinity of 0 while maintaining Qf at an high value.
摘要翻译：本发明的目的是获得介电常数εε大的谐振频率的温度系数τf接近于0并具有大的Q值的介电陶瓷组合物，通过加入和掺合在负侧的温度系数τf大的陶瓷组合物的正面上的谐振频率的τf大的陶瓷组合物。在其中R是Nd，Sm，Pr和La中的一种或两种以上的Li> 2 2 <3> < - TiO 2>组合物中，可以通过引入改进的介电常数ε 特定量的Bi> 2O 3，并且tau f可以转移到正侧，另外通过引入特定量的MO（其中M是Ca和Sr中的一个或两个）实现的Qf的显着改善，。此外，通过与MO（其中M是Ca和Sr的一个或两个）一起引入特定量的Na 2 O 3，特别是在εr = 150的材料的情况下，可以控制 τf保持在0附近，同时保持Qf为高值。

2. 发明公开

EP1353886A1 MICROWAVE DIELECTRIC CERAMIC COMPOSITION 有权
标题翻译：微波应用的介电陶瓷组合物
公开(公告)号：EP1353886A1
公开(公告)日：2003-10-22
申请号：EP01925924.1
申请日：2001-04-25
申请人： SUMITOMO SPECIAL METALS CO., LTD.
发明人： FUKAGAWA, Tomoki , NISHIKAWA, Kazuhiro
IPC分类号： C04B35/462 , H01P7/10
CPC分类号： C04B35/475 , C04B35/462 , C04B35/465 , C04B35/50 , C04B35/6262 , C04B2235/3201 , C04B2235/3203 , C04B2235/3208 , C04B2235/3213 , C04B2235/3224 , C04B2235/3227 , C04B2235/3232 , C04B2235/3298
摘要： An object of the present invention is to obtain a dielectric ceramic composition wherein the dielectric constant ε is large, the temperature coefficient τf of the resonance frequency is close to 0, and which has a large Q value, by adding to and blending with a ceramic composition whose τf of the resonance frequency is large on the plus side a ceramic composition whose temperature coefficient τf is large on the minus side. In an Li2O-R2O3-TiO2-based composition where R is one or two or more of Nd, Sm, Pr and La, an improved dielectric constant ε can be achieved by introducing a specific quantity of Bi2O3, and τf can be shifted to the plus side and in addition a considerable improvement in Qf achieved by introducing a specific quantity of MO (where M is one or two of Ca and Sr). Furthermore, by introducing a specific quantity of Na2O together with the MO (where M is one or two of Ca and Sr), in particular in the case of material of εr≥ 150, it is possible to control τf to the vicinity of 0 while maintaining Qf at an high value.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式