有源滤波器（一阶巴特沃思低通滤波器）的幅频特性曲线是？https://edu-image.nosdn.127.net/2FE91AC79FED0E6A1F650BBEC039F7A2.png?imageView&thumbnail=890x0&quality=100
举一反三
- 一阶巴特沃思低通滤波器的上限截止频率为：https://edu-image.nosdn.127.net/B28DBD6D5D0D54AA04F58498C0E30F43.png?imageView&thumbnail=890x0&quality=100
- 一阶低通和高通滤波电路的特征频率http://edu-image.nosdn.127.net/7E7F1055858242AC1846E34707EA3848.png?imageView&thumbnail=890x0&quality=100与通带截止频率http://edu-image.nosdn.127.net/5EC1781C90A066C15C4A6AFF6EF983C2.png?imageView&thumbnail=890x0&quality=100相等；而高阶低通和滤波电路的http://edu-image.nosdn.127.net/3ED720FB1F05ABA1F9079DE5B7F791B8.png?imageView&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/F711F7FB9E8D3C851ACAABB02F5C6EE7.png?imageView&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/865F0785FF3D04AFFC7A9E21B34598FD.png?imageView&thumbnail=890x0&quality=100。
- 有源滤波器按电路的幅频特性可分为低通滤波、高通滤波、________、________和全通滤波五种。
- 有源低通滤波器的过渡带越窄,表明滤波器的滤波性能越好
- f(x)在[0,1]上有连续的二阶导数，f(0)=f(1)=0,任意x属于[0,...715af2ac3f81f8.png"]