Electronically tunable voltage-mode SIMO OTA-C universal biquad filter

Author

Kumngern, Montree ; Suwanjan, Peerawut ; Dejhan, Kobchai

Author_Institution

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

fYear

2011

fDate

2-5 Oct. 2011

Firstpage

774

Lastpage

777

Abstract

This paper presents a new voltage-mode biquad filter with single-input multiple-output (SIMO) based on single-ended operational transconductance amplifiers (OTAs) and grounded capacitors. The proposed filter can provide lowpass, bandpass, highpass, bandstop and allpass voltage characteristics. The natural frequency can also be tuned electronically by adjusting the transconductance values of OTAs. The filter still enjoys no requirement with the component choice conditions and no requirement with the inverting-type input signal to realize specific filtering functions, high input impedance, and low active and passive sensitivities. PSPICE simulation results are provided to demonstrate the theoretical analysis.

Keywords

biquadratic filters; capacitors; circuit tuning; operational amplifiers; PSPICE simulation; SIMO OTA-C universal biquad filter; allpass voltage characteristics; electronically tunable voltage-mode biquad filter; grounded capacitors; inverting-type input signal; single-ended operational transconductance amplifiers; single-input multiple-output biquad filter; Band pass filters; Capacitors; Filtering theory; Impedance; Low pass filters; Transconductance; operational transconductance amplifier (OTA); single-input multiple-output (SIMO); universal filter; voltage-mode filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (APCC), 2011 17th Asia-Pacific Conference on

Conference_Location

Sabah

Print_ISBN

978-1-4577-0389-8

Type

conf

DOI

10.1109/APCC.2011.6152912

Filename

6152912