MgO-TiO_2-ZnO系统多层陶瓷电容器微波瓷料频率特性研究

Study on Frequency Properties of MgO TiO 2 ZnO System MLCC Microwave Ceramic Materials

本文研究了ＭｇＯＴｉＯ２ＺｎＯ系统陶瓷，用其制成多层陶瓷电容器（ＭＬＣＣ），其优点是具有正温度系数（αｃ＝９０±２０ｐｐｍ／℃）、高Ｑ（Ｑ１００００）、高频谐振频率达６９０ＭＨｚ（Ｃ＝３１ｐＦ），重点讨论了容量阻抗频谱．

MgO TiO 2 ZnO(MTZ) system ceramic have been studied in the paper.The advantages of MLCC prepared from this system ceramic material are positive temperature coefficient of capacitance ( α c =90±20ppm/℃),high Q(Q 10000),high working frequency,the resonant frequency ( C =31pF) is up to 690MHz.Changes of capacitance and impedance with frequency were discussed principally.