Title :
Characterisation of second-order discrete-time filters
Author :
Nishihara, Akinori
Author_Institution :
Tokyo Institute of Technology, Department of Physical Electronics, Faculty of Engineering, Tokyo, Japan
Abstract :
Novel but very simple expressions characterising second-order discrete-time filters are presented. The parameters used are the centre angular frequency and the 3 dB bandwidth. The sensitivity analysis points out that Q (=¿0/¿b) has been misused as the measure related to sensitivity performance of discrete-time filters. Actually the sensitivity is approximately proportional to 1/¿0¿b for narrowband filters.
Keywords :
digital filters; sensitivity analysis; switched capacitor networks; switched filters; 3 dB bandwidth; angular frequency; digital filters; second-order discrete-time filters; sensitivity analysis; switched capacitor filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830061
