椭圆型有源带通滤波器的最佳级联顺序

• 作 者: 胡筠 柴清濂
• 出 处: 通信学报
• 发表日期: 1981年04期
• 关键词: 级联顺序 椭圆型 有源带通滤波器 带通滤波器 带通 阻带 动态范围 对较 有源滤波器 通带

有源滤波器级联实现时,级联顺序的安排,是从动态范围最大与信噪比最高的原则出发,兼顾其他影响而决定的。过去已有的决定方法,需要繁复的计算,在高阶数时,计算量更为可观。也有人提出过简单的安排方法,但通过实际计算,说明并非最佳。本文就椭圆型带通滤波器(这是对较高要求使用最多的类型,也是用过去已有方法需要计算量最多的)提出新的安排顺序的方法,简单而符合实际,并通过实例,说明这种方法的依据。

When cascading active power filters, the order of cascading is determined from the principle of maximizing the dynamic range and maximizing the signal-to-noise ratio, taking into account other influences. The methods that have been decided in the past require complicated calculations, and the calculations are even more impressive at higher orders. Some people have also proposed a simple arrangement, but through actual calculations, the explanation is not the best. In this paper, we propose a new method of arranging the order of elliptic bandpass filters (which is the most used type for the higher requirements and also the most computationally intensive method used in the past), which is simple and practical and shows, through examples, The basis of this method.