【摘 要】
：
根据巴特沃思模拟带通滤波器的设计原理,先设计巴特沃思模拟带通滤波器s域系统函数,再搭建四阶RLC带通模拟滤波器电路,导出RLC电路的s域系统函数。采用比较法,令两个系统函数
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根据巴特沃思模拟带通滤波器的设计原理,先设计巴特沃思模拟带通滤波器s域系统函数,再搭建四阶RLC带通模拟滤波器电路,导出RLC电路的s域系统函数。采用比较法,令两个系统函数相等,导出四阶RLC滤波电路元件参数满足的高次代数方程组,解代数方程组得到电路的RLC元件参数具体取值。得到由RLC元件搭建的具体四阶巴特沃思模拟带通滤波器.设计过程完善了由RLC元件搭建巴特沃思模拟带通滤波器的设计方法,对实用滤波器的设计具有指导性的意义。
According to the design principle of Butterworth analog band-pass filter, we firstly design the s-domain system function of Butterworth analog band-pass filter, then construct the fourth-order RLC bandpass analog filter circuit and derive the s-domain system function of RLC circuit. By using the comparison method, the two system functions are equal, and the high-order algebraic equations satisfying the parameters of the fourth-order RLC filter circuit elements are derived. The solution of the algebraic equations is to obtain the specific values of the RLC component parameters of the circuit. Get the concrete fourth-order Butterworth analog band-pass filter constructed by RLC element.The design process has improved the design method of Butterworth analog band-pass filter built by RLC components, which has directive significance to practical filter design.
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