BSTO/RO铁电移相材料的介电性能及应用探讨  

Dielectric properties and approaching of application of BSTO/RO ferroelectric phase-shift material

作　　者：徐翔[1] 匡轮[1] 罗辉华[1] 

机构地区：[1]北京无线电测量研究所,北京100039

出　　处：《电子元件与材料》2009年第4期30-33,共4页Electronic Components And Materials

摘　　要：采用固相反应法制备了不同组分钛酸锶钡/轻金属或稀土氧化物(BSTO/RO)铁电移相材料。研究了该系材料的介电性能。结果表明:对于Ba0.6Sr0.4TiO3/质量分数为60%RO材料,1MHz下,εr为119,tanδ为0.001;3.37GHz下,εr为110,tanδ为0.004。3×103V/mm偏置场强下,介电调谐率η为12.8%。材料的介电性能基本上达到了相控阵移相器的使用要求。Different component BSTO/RO ferroelectric phase shift materials were prepared by solid phase reaction method. The dielectric properties were investigated. The results show that for Bao.6Sr0.4TiO3/mass fraction of 60%RO material, εr and tanδ are 119, 0.001 at 1 MHz and 110, 0.004 at 3.37 GHz, respectively. Dielectric tunability reaches 12.8% with the bias electric field intersity of 3× 10^3 V/mm. It meets using requirements of materials for phased array phase shifters.

关 键 词：钛酸锶钡 铁电材料 移相器 介电性能 

分 类 号：TM22[一般工业技术—材料科学与工程]