Signal-flow graph OTA-C band-pass and band-reject integrated filters

Author

Caloba, Luiz P. ; De Queiroz, Antonio C M ; Sanchez-Sinencio, Edgar

Author_Institution

Dept. of Electr. Eng., Univ. Federal do Rio de Janeiro, Brazil

fYear

1989

Firstpage

1624

Abstract

A simple and straightforward method for the synthesis of OTA (operational transconductance amplifier) -C bandpass and band-reject filters is presented. The method mixes the signal-flow-graph and component-simulation techniques. The final filters have good sensitivity performance and all capacitors grounded, which are advantages for integration. The method can be applied to the OTA-C simulation of any ladder passive prototype filter. Problems related to the presence of nonobservable poles created by the structure of these filters are discussed, and solutions are proposed

Keywords

active filters; band-pass filters; band-stop filters; OTA-C filters; band-reject filters; bandpass filters; capacitors grounded; component-simulation techniques; grounded capacitors; integrated filters; ladder passive prototype filter; low sensitivity; nonobservable poles; operational transconductance amplifier; signal-flow-graph; solutions; straightforward method; Band pass filters; Capacitors; Circuit simulation; Dynamic range; Frequency; Impedance; Low pass filters; Prototypes; Shunt (electrical); Virtual prototyping;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1989., IEEE International Symposium on

Conference_Location

Portland, OR

Type

conf

DOI

10.1109/ISCAS.1989.100674

Filename

100674