Title :
A general class of current mode filters
Author :
Frey, Douglas R.
Author_Institution :
EECS Dept., Lehigh Univ., Bethlehem, PA, USA
Abstract :
A new class of nonlinear analog filters with linear input-output response is proposed. These filters are an extension of the recently introduced `log filter´ class. By virtue of the small node voltage excursions, these filters share the current mode characteristic of log filters. It is shown that the equations for the filter are obtained by using hyperbolic functions for mappings on the state space in linear systems. The resulting exponential state space filters are then given circuit implementations
Keywords :
active filters; nonlinear filters; state-space methods; circuit implementations; current mode filters; exponential state space filters; hyperbolic functions; linear input-output response; nonlinear analog filters; Capacitors; Circuits; Cutoff frequency; Design methodology; Electronic switching systems; Filtering theory; Nonlinear equations; Nonlinear filters; State-space methods; Voltage;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.394003
