Title :
New switched-current cells for adaptive filters
Author :
de la Vega, Alexandre S. ; De Queiroz, Antonio C M ; Diniz, Paulo S R
Author_Institution :
Univ. Federal Fluminense, Niteroi, Brazil
Abstract :
A family of continuous-time and switched-current (SI) four-quadrant current-multipliers are proposed, based on a current-gain cell linearly controlled by a current, as well as an SI version of that cell. The use of a subtractor is also proposed, which eliminates current offsets. Based on this property an offset-free four-quadrant multiplier-integrator cell is also presented. The new circuits are meant to implement adaptive filters
Keywords :
adaptive filters; analogue multipliers; continuous time filters; switched current circuits; switched filters; adaptive filters; continuous-time circuits; current offsets; current-gain cell; four-quadrant current-multipliers; offset-free four-quadrant multiplier-integrator cell; subtractor; switched-current cells; Adaptive filters; Bipolar integrated circuits; Convergence; Equations; Filtering algorithms; Least squares approximation; Power supplies; Resistors; Transconductors; Variable structure systems;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.608726
