IMPROVED HIGH-Q DIELECTRIC RESONATOR SINTERED AT LOW FIRING TEMPERATURE

被引：23

作者：

YOU, CC

HUANG, CL

WEI, CC

HUANG, JW

机构：

[1] Department of Electrical Engineering, National Cheng Rung University, Tainan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1995年 / 34卷 / 4A期

关键词：

MICROWAVE CERAMICS; DIELECTRIC RESONATOR; COMPLEX PEROVSKITE;

D O I：

10.1143/JJAP.34.1911

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The microwave properties of Ba(Co1/3Nb2/3)O-3-Ba(Ni1/3Nb2/3)O-3 ceramics were investigated. Ba(Co1/3Nb2/3)O-3 has a low sintering temperature. However: the Q value is too low for application requirements at microwave frequencies. A new composition, Ba(Ni1/3Nb2/3)O-3, which shows a positive temperature coefficient of resonant frequency was used as a compensator to improve the dielectric properties of the complex perovskite-type ceramic. Both sintering and crystallization of Ba(Co1/3Nb2/3)O-3-Ba(Ni1/3Nb2/3)O-3 were accelerated compared to those of Ba(Co1/3Nb2/3)O-3 alone. The Q value at microwave frequencies was also improved. The dielectric ceramics with Ba(Co, Ni)(1/3)Nb2/3 O-3 system were found to be fired at a low temperature below 1400 degrees C and to have a low temperature coefficient of resonant frequency tau(f) and high Q value. Dielectric properties of the ceramic resonator made of Ba(Co0.6Ni0.4)(1/3)Nb-2/3 O-3 are a dielectric constant of 31, Q value of 10000 at 9 GH z, and temperature coefficient of resonant frequency tau(f) of -4 ppm/degrees C.

引用

页码：1911 / 1915

页数：5

共 23 条

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[2]

BURNS G, 1985, SOLID STATE PHYS, P461

[3]

HAKKI BW, 1960, IRE T MICROWAVE THEO, V16, P402

[4]

KAJFEZ D, 1986, DIELECTRIC RESONATOR, P345