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.
Design of IIR notch filters with different passband gains
1998-02-01
5 pages
Article (Journal)
English
band-pass filters , notch filters , IIR notch filters , signal processing , notch-frequency specification , frequencies , passband gains , rejection bandwidth , IIR filters , infinite-duration impulse response notch filters , standard lowpass IIR digital-filter design methods , digital filters , design
Multiple Passband Filters for Satellite Applications
AIAA | 2002
|Tunable Single-Passband Microwave Photonic Filter Based on Integrated Optical Double Notch Filter
British Library Online Contents | 2018
|Tilted Moiré Fiber Bragg Grating Optical Filters With Controllable Passband and Stopband
British Library Online Contents | 2010
|RC filters with staggered notch frequencies.
NTRS | 1966
|