论文部分内容阅读
本刊1978年第1期译载了苏联OcmaneΗΚο的文章“有源滤波器的综合”,这篇文章介绍了有源滤波器的简化设计方法。这种方法的优点是设计公式比较简单,但是由于公式中使用的设计参数,如α、βγ、m、n等,均未与滤波器的二个主要性能参数(通带内误差与通带外衰减速率)相联系,因而实用价值是不大的。而且也仅涉及了二阶契比谢夫滤波器的设计,不能推广用来设计性能更好的高价滤波器。本文将介绍我们在工作中使用过的契比谢夫滤波器的工程设计方法。至于其他型式的滤波器,如勃脱沃斯滤波器等,由于应用远不如契比谢夫滤波器,因此不再一一介绍。由于高通滤波器、带通滤波器与带阻滤波器均可由低通滤波器经过一定的变换式组合而构成,因此着重讨论低通滤波器的设计。
The first issue in 1978, published in the Soviet Union OcmaneΗΚο article “Synthesis of active filters,” This article describes the simplified design of active filter. The advantage of this method is that the design formula is relatively simple, but due to the design parameters used in the formula, such as α, βγ, m, n, etc., are not related to the two main performance parameters of the filter Decay rate) is linked, so the practical value is not big. But also only involves the design of the second-order Chebyshev filter, which can not be generalized to design higher-priced filters with better performance. This article will introduce the engineering design method of the Chebyshev filter that we used in our work. As for other types of filters, such as the debut filter, etc., because the application is far less than Chebyshev filters, so no longer one by one. As the high-pass filter, band-pass filter and band-stop filter by the low-pass filter can be a combination of transformation and composition, it focuses on the design of low-pass filter.