可变中心频率有源带通滤波器的优化设计

本文采用单极点转移模型处理运算放大器,应用最优化方法对可变中心频率带通滤波器进行了设计。优化结果全面满足设计指标要求。优化过程中所必要的梯度信息是用伴随网络法获得的。本文同时应用最优化方法,对设计参数的最佳容差进行了分析,确定了设计参数可允许的变化范围。

The Optimization Design of a Variable Center Frequency Band-Pass Filter

The variable center frequency band-pass filter is designed by optimization technique and one-pole roll-off model is used to deal with the operation amplifier of the filter. As the results, the design specifications are satisfied in the whole design frequencies. The gradient information which is required in the optimization process is provided by the adjoint network technique.The optimization technique is also used in analysing the optimal tolerances and in finding the permit variable ranges of design parameters.