New Study on Butterworth Low Pass Filter

摘要

The conventional Butterworth low pass filter exists the contradiction problems such as test precision, stability and response time, so a kind of new high order Butterworth low pass filter is put forth in this paper. Redistributing the poles of low pass filter, the new high order Butterworth low pass filter is deduced and analyzed. Compared with the conventional Butterworth low pass filter of the same order, the new filter has rapider response, smaller overshoot. This new filter can be used to enhance the test precision.