Independent Tunable-Q Current-mode OTA-C Universal Filter

Author

Prommee, Pipat ; Somdunyakanok, Montri ; Dejhan, Kobchai

Author_Institution

Fac. of Eng. & Res. Center for Commun. & Inf. Technol., King Mongkut´´s Inst. of Technol., Bangkok

fYear

2006

fDate

4-7 Dec. 2006

Firstpage

900

Lastpage

903

Abstract

An OTA-C current-mode universal filter with independent tunable-Q realized by band-reject function is proposed. The proposed circuit employs OTAs and grounded capacitors. The parameter Q_P can be tuned independently from omega_P. However, the other different kinds filter function as low-pass, high-pass, band-pass and band-reject response can be also obtained without changing circuit topology. The parameters omega_P and Q_p can be electronically tuned through adjusting the transconductance gains of the OTAs. Moreover, the parameter Q_p can be also tuned by changing component manually without effect to the omega_P The simulation results have been carried out by PSpice

Keywords

SPICE; active filters; band-pass filters; band-stop filters; circuit tuning; current-mode circuits; high-pass filters; low-pass filters; operational amplifiers; OTA-C; PSpice; band-pass filter; band-reject filter; band-reject function; electronic tuning; grounded capacitor; high-pass filter; low-pass filter; operational transconductance amplifier; transconductance gains; tunable-Q current-mode universal filter; Active filters; Band pass filters; Capacitors; Frequency; Quadratic programming; Temperature; Transconductance; Tunable circuits and devices; Tuned circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0387-1

Type

conf

DOI

10.1109/APCCAS.2006.342187

Filename

4145539