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FIR filter solution to unusual gain responses arising in Parks-McClellan algorithm
- Authors
- Kim, Keun Jun; Nam, Sang Won
- Issue Date
- Sep-2009
- Publisher
- The Institute of Electronics, Information and Communication Engineers (IEICE)
- Keywords
- Parks-McClellan algorithm; FIR bandpass filters; sampling kernel; complementary filter
- Citation
- IEICE Electronics Express, v.6, no.17, pp 1226 - 1233
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEICE Electronics Express
- Volume
- 6
- Number
- 17
- Start Page
- 1226
- End Page
- 1233
- ISSN
- 1349-2543
- Abstract
- A linear-phase FIR filter with more than two bands, designed by employing the Parks-McClellan algorithm, may exhibit an undesirable gain response in the transition band. In this paper, a practical FIR filter solution to such undesirable results is proposed, whereby a modified sampling kernel and the complementary filter concept are utilized. In particular, the proposed approach provides a closed-form design of type-1 linear-phase FIR filters satisfying the given filter specification.
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