Single-input and three-output current-mode biquadratic filters using multiple-output OMAs

Author

Tangsrirat, Worapong ; Unhavanich, Sumalee ; Dumawipata, Teerasilapa ; Surakampontorn, Wanlop

Author_Institution

Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok, Thailand

Volume

2

fYear

2002

fDate

2002

Firstpage

399

Abstract

A novel circuit configuration for the realization of the single-input and three-output (SITO) current-mode biquadratic filters employing only three multiple-output operational mirrored amplifiers (OMAs) is presented. The proposed circuit can simultaneously realize lowpass, bandpass and highpass filter functions at three high-impedance outputs without changing the circuit configuration and elements. Moreover, the resultant current-mode filter provides low passive and active sensitivities, uses of only grounded passive elements and can be orthogonal tuned of the parameters at and Q-factor.

Keywords

Q-factor; band-pass filters; biquadratic filters; circuit tuning; current-mode circuits; high-pass filters; low-pass filters; operational amplifiers; Q-factor tuning; active filters; bandpass filter function; current-mode biquadratic filters; grounded passive elements; high-impedance outputs; highpass filter function; low active sensitivity; low passive sensitivity; lowpass filter function; multiple-output opamps; operational mirrored amplifiers; single-input filters; three-output filters; Band pass filters; Circuits; Communication industry; Equations; Information technology; Mirrors; Operational amplifiers; Passive filters; Q factor; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. APCCAS '02. 2002 Asia-Pacific Conference on

Print_ISBN

0-7803-7690-0

Type

conf

DOI

10.1109/APCCAS.2002.1115277

Filename

1115277