Improved high Q value of MgTiO3-CaTiO3 microwave dielectric resonator using WO3-doped at lower sintering temperature for microwave applications

被引：33
|
作者：
Chen, Yuan-Bin [1 ]
机构：
[1] Chang Jung Christian Univ, Dept Engn & Management, Tainan 71101, Taiwan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 478卷 / 1-2期
关键词：
Sintering; X-ray diffraction; Dielectric properties; PERMITTIVITY; CERAMICS; FILTERS;
D O I：
10.1016/j.jallcom.2008.11.102
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of WO3 additive on the microstructures, the phase formation and the microwave dielectric properties of MgTiO3-CaTiO3 ceramics system were investigated. The sintering temperature of WO3-doped 0.95MGTiO(3)-0.05CaTiO(3) (95MCT) ceramics can be lowered to 1175 degrees C. The microwave dielectric properties are found strongly to correlate with the sintering temperature as well as the amount of WO3 addition. At 1250 degrees C 95MCT ceramics with 0.5 wt% WO3 addition gives a dielectric constant epsilon(r) of 20.3, a Q x f value of 66,000 (GHz) and a tau(f) value of -8.2ppm/degrees C. A band-pass filter is designed and simulated using the proposed dielectric to study its performance. (C) 2008 Published by Elsevier B.V.
引用
收藏
页码：657 / 660
页数：4
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