TY - JOUR
T1 - A new method for the design of IIR filters with flat magnitude response
AU - Fernandez-Vazquez, Alfonso
AU - Jovanovic-Dolecek, Gordana
N1 - Funding Information:
Manuscript received October 19, 2004; revised May 14, 2005, August 8, 2005, and January 6, 2006. This work was supported by CONACyT Mexico, under Grant 128927. This paper was recommended by Associate Editor Y. Lian. The authors are with the Department of Electronics, Instituto Nacional de Astrofisica, Optica y Electronica (INAOE), P.C. 72000, Puebla, Mexico (e-mail: afernan@inaoep.mx; gordana@inaoep.mx). Digital Object Identifier 10.1109/TCSI.2006.877891
PY - 2006/8
Y1 - 2006/8
N2 - This paper presents a new direct design of infinite-impulse response (IIR) filters with a flat magnitude response in both passband and stopband (Butterworth filters). The design specifications are passband and stopband frequencies and passband droop and stopband attenuation. The approach is based on an allpass filter with flatness at frequency points ω = 0 and ω = π. Depending on the parity of the IIR filter order, the allpass filter is either real or complex. However, in both cases, the resulting IIR filter is real.
AB - This paper presents a new direct design of infinite-impulse response (IIR) filters with a flat magnitude response in both passband and stopband (Butterworth filters). The design specifications are passband and stopband frequencies and passband droop and stopband attenuation. The approach is based on an allpass filter with flatness at frequency points ω = 0 and ω = π. Depending on the parity of the IIR filter order, the allpass filter is either real or complex. However, in both cases, the resulting IIR filter is real.
KW - Allpass filters
KW - Allpole filters
KW - Digital filters
KW - Flat infinite-impulse response (IIR) filters
UR - http://www.scopus.com/inward/record.url?scp=33747856782&partnerID=8YFLogxK
U2 - 10.1109/TCSI.2006.877891
DO - 10.1109/TCSI.2006.877891
M3 - Artículo
SN - 1057-7122
VL - 53
SP - 1761
EP - 1771
JO - IEEE Transactions on Circuits and Systems I: Regular Papers
JF - IEEE Transactions on Circuits and Systems I: Regular Papers
IS - 8
ER -