There has been a great amount of interest in the design of digital filters with low sensitivity in coefficient variations. The WDF(Wave Digital Filter) modeled after analog ladder networks has been known to have low coefficient sensitivity properties....
There has been a great amount of interest in the design of digital filters with low sensitivity in coefficient variations. The WDF(Wave Digital Filter) modeled after analog ladder networks has been known to have low coefficient sensitivity properties.
To examine this nature, a third-order Butterworth low-pass filter was realized as a WDF structure. And its low coefficient sensitivity properties were compared with the cascade structure which has a good coefficient sensitivity properties among the conventional structures.