Title :
Tunable OTA-C equalizers
Author :
de Queiroz, A.C.M. ; Petraglia, A. ; Mitra, S.K.
Author_Institution :
Departamento de Engenharia Eletronica, Univ. Federal do Rio de Janeiro, Brazil
Abstract :
Some operational transconductance amplifier and capacitor (OTA-C) structures suitable for the implementation of frequency-domain equalizers using bump and all-pass sections are discussed. In the circuits studied the main emphasis was on keeping the structures simple, keeping the sensitivities as low as possible, and providing the means for simple tuning. The equalizers studied are presented in a single-signal-path configuration. For a comparison between the proposed structures, series graphic equalizers were simulated and their sensitivity characteristics studied
Keywords :
active filters; all-pass filters; equalisers; operational amplifiers; OTA-C equalizers; all-pass sections; bump sections; frequency-domain equalizers; operational transconductance amplifier; sensitivity characteristics; series graphic equalizers; single-signal-path configuration; tuning; Capacitors; Circuit noise; Equalizers; Filtering theory; Filters; Frequency; Resistors; Signal processing; Transfer functions; Tunable circuits and devices;
Conference_Titel :
Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0593-0
DOI :
10.1109/ISCAS.1992.230377
