Accession Number:

AD0291550

Title:

FILTERS WITH POLES HAVING EQUAL VERTICAL SPACING

Descriptive Note:

Corporate Author:

POLYTECHNIC INST OF BROOKLYN N Y MICROWAVE RESEARCH INST

Personal Author(s):

Report Date:

1962-09-24

Pagination or Media Count:

12.0

Abstract:

In the Butterworth criterion for maximally flat low-pass amplitude response, the poles are spaced by equal angles on a unit circle in the left hand s-plane. This configuration does indeed give a good cut-off in filters but at the expense of the transient response. The poor transient response is due to the poles whichAPPROACH THE J-AXIS THEIR SPECIFIC CONTRIBUTIONS WILL BE DESCRIBED MATHEMATICALLY. The above problem was considered when a filter was needed to give a band-limited output to an input of sampling pulses. The poles were placed on the unit circle, with equal vertical spacing, so as to try to compromise between good cut-off and acceptable transient response. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE