Title :
Realization of voltage-controlled impedances
Author :
Senani, Raj ; Bhaskar, D.R.
Author_Institution :
Dept. of Electron. & Commun. Eng., Delhi Inst. of Technol., India
fDate :
9/1/1991 12:00:00 AM
Abstract :
K.W. Nay and A. Budak (1983) presented a technique employing JFETs and op-amps for obtaining voltage-controlled positive/negative resistance exhibiting wide dynamic range and low distortion. Here two new op-amp-JFET configurations are proposed, which not only realize voltage-controlled resistances but, unlike the Nay configuration, make it possible to realize voltage-controlled inductance and voltage-controlled capacitance elements, too. Experimental results are given to demonstrate the practical validity of the theoretical formulations
Keywords :
active networks; electric impedance; field effect transistor circuits; junction gate field effect transistors; network analysis; operational amplifiers; stability; nonideal analysis; op-amp-JFET configurations; stability analysis; voltage-controlled capacitance; voltage-controlled impedances; voltage-controlled inductance; Circuits; FETs; Filtering; Image restoration; Impedance; Kalman filters; Niobium; Operational amplifiers; Video recording; Voltage;
Journal_Title :
Circuits and Systems, IEEE Transactions on
