Title :
The design of cascaded FIR filters
Author :
Lim, Yong-Ching ; Yang, Rui ; Liu, Bede
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
Many filtering operations require the use of more than one filter connected in cascade. The stopband response of each of these filters must meet a given minimum attenuation requirement, whereas the overall passband peak ripple magnitude must be within a pre-specified tolerance limit. Generally, the design approaches require the passband ripple magnitude of each of the filters to be smaller than that of the overall filter. However, if the filters are jointly optimized so that the passband ripples of the filters are 180° out of phase, then the passband ripple magnitudes of the individual filters may be allowed to be very much larger than the maximum allowable overall ripple magnitude without violating the tolerance limit of the overall passband ripple magnitude. In this paper, we present a linear-programming technique for jointly optimizing the filters
Keywords :
FIR filters; cascade networks; digital filters; filtering theory; frequency response; linear programming; FIR filter design; cascaded FIR filters; filter optimisation; linear-programming technique; minimum attenuation requirement; passband ripple magnitude; stopband response; Attenuation; Band pass filters; Digital filters; Finite impulse response filter; Frequency; IIR filters; Image sampling; Linear programming; Passband; Signal sampling;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.540382
