Design of IIR notch filters with different passband gains

Joshi, Y. V. ; Roy, S. C. D. (1998) Design of IIR notch filters with different passband gains IEE Proceedings - Vision, Image, and Signal Processing, 145 (1). pp. 6-10. ISSN 1350-245X

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A method is proposed for the design of infinite-duration impulse response (IIR) notch filters with different passband gains using the standard lowpass IIR digital-filter design methods. This method satisfies the notch-frequency specification exactly and realises a rejection bandwidth, defined by the frequencies at which the gain is 3 dB below the lower of the two passband gains, which is smaller than that specified. Illustrative examples are given.

Item Type:Article
Source:Copyright of this article belongs to The Institution of Electrical Engineers.
Keywords:Design; IIR Notch Filters; Passband Gains; Infinite-duration Impulse Response Notch Filters; Standard Lowpass IIR Digital-filter Design Methods; Notch-frequency Specification; Rejection Bandwidth; Frequencies
ID Code:9911
Deposited On:02 Nov 2010 10:28
Last Modified:01 Jun 2011 11:24

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