LST-9.0MHz晶体滤波器的研制  

The Design and manufacture of LST-9.0MHz Crystal Filter

作　　者：靳宝安[1] 牟强[1] 王林力 

机构地区：[1]陕西科技大学,陕西咸阳712081 [2]陕西北川无线电器材厂,陕西咸阳712099

出　　处：《中国有线电视》2004年第12期61-63,共3页China Digital Cable TV

基　　金：陕西省教育厅资助项目 ( 0 3JK161)

摘　　要：设计制作了一种以AT切基频压电石英晶体振子为滤波元件的LST - 9.0MHz型分立式带通晶体滤波器。滤波电路采用两节差接桥型电路即格型网络 ,输入信号在输入端为双路平衡输入 ,网络输入 /输出端阻抗不对称 ,直流不共地 ,具有在 - 5 5～ +85℃工作环境温度范围内、工作频率 9.0MHz时 ,中心频率偏差≤ 2 0 0Hz、矩形系数≤ 2 .Using AT cut thickness oscillate mode piezoelectricity quartz resonator and the normal crossed network at the crystal filter design, It was designed LST-9.0MHz two channel message balance input, input/output resistance dissymmetry, two stage bridge circuit segregative net of band pass. when the operation temperature is at the range from -55 to +85℃, the operation frequency is 9.0 MHz, the center frequency deviation will less than 200 Hz, the rectangle coefficient will less than 2.5.

关 键 词：滤波晶体 中心频率偏差 带通网络 晶体滤波器 

分 类 号：TN713.91[电子电信—电路与系统]