利用MathCAD绘制单位增益压控电压源二阶巴特沃斯高通滤波器参数方程的误差等值曲线,对其分析研究后得出一种优化设计方案,即首先挑选电容,使C1=C2;然后利用公式计算电阻值。显然,这种设计方案具有方便、低成本,易于补偿温漂的优势。经Multisim-10仿真分析,还证实了该方案具有最稳定性的特点。 Using MathCAD to plot the error equivalent curve of the second-order Butterworth high-pass filter unit gain voltage-controlled voltage source, an optimized design scheme is obtained after the analysis and research, that is, first select the capacitor so that C1 = C2; then use The formula calculates the resistance. Obviously, this design has the advantages of convenience, low cost, easy to compensate for temperature drift. The Multisim-10 simulation analysis also confirmed that the scheme has the most stable characteristics.