A realization of fractional power-law circuit using OTAs

Author

Kawaba, Katsuya ; Nazri, Wan ; Ko Aun, Ho ; Iwahashi, Masahiro ; Kambayashi, Noriyoshi

Author_Institution

Dept. of Electr. Eng., Nagaoka Univ. of Technol., Niigata, Japan

fYear

1998

fDate

24-27 Nov 1998

Firstpage

249

Lastpage

252

Abstract

This paper shows a realization of circuit functions (such as a voltage transfer function, a transfer immittance, a driving-point immittance) with s^α (-1<α<1) characteristics. The circuit shown in this paper is realized by cascaded connection of a finite number of two-port networks consisting of operational transconductance amplifiers (OTAs) and capacitors. By changing the value of conductance of OTAs, changeable characteristics with respect to α is obtained. The value of α can be changed by adjusting the controlling current of the OTAs

Keywords

analogue circuits; cascade networks; function approximation; nonlinear network synthesis; operational amplifiers; transfer functions; two-port networks; OTAs; cascaded connection; circuit functions; driving-point immittance; fractional power-law circuit; operational transconductance amplifiers; transfer immittance; two-port networks; voltage transfer function; Admittance; Capacitors; Circuits; Equations; Frequency; Impedance; Power engineering and energy; Transconductance; Transfer functions; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1998. IEEE APCCAS 1998. The 1998 IEEE Asia-Pacific Conference on

Conference_Location

Chiangmai

Print_ISBN

0-7803-5146-0

Type

conf

DOI

10.1109/APCCAS.1998.743732

Filename

743732