Title :
Exact design of multirate switched-current FIR filters with improved phase linearity
Author :
Helfenstein, Markus ; Franca, José E. ; Moschytz, George S.
Author_Institution :
Inst. for Signal & Inf. Process., Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
The design of linear phase multirate FIR filters for switched-current decimators is presented. The question of finding the decimating factor M for a given filter order N, as function of the timing used, is discussed. It is shown, that exact linearity can be achieved only for special cases of M and N, and that it depends on the chosen timing. Furthermore, we show that modulo arithmetic is a useful tool for analyzing multirate systems
Keywords :
FIR filters; linear phase filters; network synthesis; switched current circuits; switched filters; timing; SI filters; decimating factor; filter order; linear phase FIR filters; modulo arithmetic; multirate FIR filters; phase linearity; switched-current FIR filters; switched-current decimators; timing; Arithmetic; Digital filters; Energy consumption; Finite impulse response filter; Linearity; Magnetic separation; Nonlinear filters; Sampling methods; Signal processing; Timing;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.814007
