Title :
New implementations of analog FIR and IIR filters exhibiting a potential for wide signal bandwidth and programmability
Author :
Winter, Frederick J.
Author_Institution :
Suffolk Community Coll., Selden, NY, USA
Abstract :
New implementations of analog finite impulse response (FIR) and infinite impulse response (IIR) filter topologies devoid of operational amplifiers are presented. The circuits consist of various connections of delay lines and controlled current sources. The design problem associated with these new structures is considered, and is similar to procedures currently in existence for digital realizations of FIR and IIR circuits. Simulation results are presented for a variety of wideband and narrowband designs. The effect of controlled current source finite output conductance is considered along with a means for its compensation. The noise effect associated with the presence of this parasitic element, in addition to that associated with the controlled current sources and the terminating line resistances, is considered
Keywords :
FIR filters; IIR filters; constant current sources; delay lines; field effect analogue integrated circuits; programmable filters; analogue FIR filters; analogue IIR filters; compensation; controlled current sources; delay lines; finite output conductance; narrowband designs; parasitic element; programmability; terminating line resistances; wide signal bandwidth; Broadband amplifiers; Circuit noise; Circuit simulation; Circuit topology; Delay lines; Finite impulse response filter; IIR filters; Narrowband; Operational amplifiers; Wideband;
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.1993.393894
