有源带通滤波器的最佳级联顺序

• 作 者: 胡筠 柴清廉
• 出 处: 北京邮电学院学报
• 发表日期: 1980年02期
• 关键词: 级联顺序 有源带通滤波器 有源滤波器 椭圆型 带通 级联 滤波器 动态范围 带通滤波器 通带

高阶有源滤波器级联实现时,各级顺序的安排,是从动态范围最大和信噪比最大出发考虑的。决定顺序的安排,过去已有的方法,需要繁复的计算。阶数高时,计算量更为可观。也有人提出过简单的安排方法,但实践证明,并不恰当。本文提出新的安排方法,简单而符合实际,并通过一个十阶带通椭圆型滤波器的计算,作为例子,说明这种方法的依据。

Order high-order active cascade active filter arrangement, at all levels, from the maximum dynamic range and maximum signal to noise ratio considerations. Deciding the order of the arrangements, the methods that have been available in the past, require complicated calculations. When the order is high, the calculation is more substantial. Some people have also proposed a simple arrangement, but practice has proved that it is not appropriate. This paper proposes a new arrangement method which is simple and practical. The calculation of a ten-order band-pass elliptic filter is taken as an example to illustrate the basis of this method.