Design of efficient fir digital differentiators of second and higher degrees by using universal weights

✍ Scribed by Balbir Kumar; S. C. Dutta Roy

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 992 KB
• Volume: 22
• Category: Article
• ISSN: 0098-9886
• DOI: 10.1002/cta.4490220106

✦ Synopsis

We propose in this paper an efficient design of FIR digital differentiators of degree k , k = 1, 2, 3, ..., and their implementation in a novel structure which allows the order to be varied without having to alter the weights used in it. More precisely, we show that by using these 'universal weights' in a structure of order N,,,, the order can be varied from N = 3 to N,,, while keeping the weights fixed and retaining the optimality of performance. Mathematical formulae have been derived for these 'universal weights' for differentiators performing in the low-or midbandfrequency ranges.