Title :
A design method of low delay FIR bandpass filters
Author :
Ogata, Atsushi ; Aikawa, Naoyuki ; Sato, Masamitsu
Author_Institution :
Graduate Sch. of Eng., Tokyo Metropolitan Univ., Japan
Abstract :
It is an important to design FIR filters with maximally flat characteristics in the passband and equiripple characteristics in the stopband to reduce ringing and to maximize the stopband attenuation. The design method of such FIR filters by the Remez algorithm has been proposed. However, since the delay of linear-phase filters is half of filter length, the delay of high-order linear-phase filters is large. In this paper, we present a design method of low delay FIR bandpass filters with maximally flat characteristics in the passband and equiripple characteristics in the stopband by a successive projections method. The resulting filters have lower delay in the passband compared with linear-phase FIR filters of the same order
Keywords :
FIR filters; band-pass filters; delays; digital filters; filtering theory; FIR bandpass filters; design method; equiripple characteristics; low delay FIR filters; maximally flat characteristics; stopband attenuation; successive projections method; Attenuation; Band pass filters; Delay lines; Design engineering; Design methodology; Digital filters; Finite impulse response filter; Image processing; Passband; Transfer functions;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.857034
