论文部分内容阅读
通过对方波激励下二阶带通滤波器（BPF）的分析和实验，得出输入阻抗高和方波上叠加冲击函数是影响BPF输出正弦波幅值及相位的主要原因。低输入阻抗及输入接电容的二阶BPF具有良好的方波—正弦波转换性能。
Through the analysis and experiment of the second-order band-pass filter (BPF) under the square wave excitation, it is concluded that the high input impedance and the square wave superimposed impulse function are the main reasons that influence the amplitude and phase of the sine wave of BPF output. The second-order BPF with low input impedance and input capacitance has good square-wave sine-wave conversion performance.