Design of IIR digital notch filters

Joshi, Y. V. ; Dutta Roy, S. C. (1997) Design of IIR digital notch filters Circuits, Systems, and Signal Processing, 16 (4). pp. 415-427. ISSN 0278-081X

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A method is presented for the design of notch filters with specified notch frequency ω 0 and 3-dB rejection bandwidth Bτ, using a first-order real all-pass filter, wherein the only coefficient is used to control the notch frequency. To control the bandwidth, use is made of a new amplitude change function (ACF), and it is shown that given notch filter specifications can be exactly met thereby. Also, using the ACF, it is shown that stability of the second-order notch filter designs can be improved along with the noise gain.

Item Type:Article
Source:Copyright of this article belongs to Springer.
ID Code:92590
Deposited On:01 Jun 2012 12:23
Last Modified:01 Jun 2012 12:23

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