本文研制了一种由双镧系元素组成的BaO-Ln2O3-TiO2(BET)系高介电常数、低损耗材料,并以该材料为基础,设计并研究了其独石型同轴滤波器.滤波器采用新颖的凹槽式电感耦合和一端金属面短路的λ/4结构.利用HFSS高频仿真软件对该滤波器的传输特性进行了仿真,表明其具有中心频率为1.83GHz、带宽43MHz、插入损耗小于0.5dB、带内纹波为1.5dB的优异的通带特性.
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