Title :
A simple configuration for realizing voltage-controlled impedances
Author :
Senani, Raj ; Bhaskar, D.R.
Author_Institution :
Dept. of Electron. & Commun. Eng., Delhi Inst. of Technol., India
fDate :
1/1/1992 12:00:00 AM
Abstract :
A simple configuration is proposed that incorporates an effective cancellation of the nonlinearity of the VDS-i D characteristics of the FET to produce a voltage-controlled resistance (VCR) with linear range considerably more extended than other conventional FET-based VCRs. The configuration is shown to be simpler than op-amp-JFET based VCRs yet is more versatile than the previously known circuits. It makes possible the realization of VCC and VCL elements from the same configuration, which cannot be realized from the earlier circuits. CMOS versions of the proposed schemes of the VCC and VCL are suggested
Keywords :
CMOS integrated circuits; active networks; insulated gate field effect transistors; CMOS; FET; VCC elements; VCL elements; linear range; nonlinearity; voltage-controlled capacitance; voltage-controlled impedances; voltage-controlled inductance; Capacitance; Circuits; Dynamic range; FETs; Impedance; Operational amplifiers; Resistors; Video recording; Voltage; Voltage-controlled oscillators;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
