摘要
基于连续时间状态空间结构和广义双线性变换,提出了一种设计无限冲激响应(IIR)数字滤波器的参数化方法.优点是稳定区域包含了整个参数空间,因此可以采用无约束优化方法.给出了仿真实例,并与已有的设计方法进行了比较,其通带波动、阻带衰减、群迟延等性能更为优越.
Based on a continuous-time state-space structure and the generalized bilinear transformation（GBT）,a parameterization for IIR digital filter design is proposed.The cost function can be minimized without stability monitoring because the corresponding stability region is the entire parameter space.Simulation shows that the performance of the filters obtained with the proposed approach is better than that of those designed with an existing one in terms of passband ripple,stopband attenuation and group delay.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2012年第4期847-851,共5页
Acta Electronica Sinica
关键词
IIR数字滤波器设计
状态空间实现
广义双线性变换
参数化
infinite impulse response（IIR） digital filter design
state-space realization
GBT
parameterization
