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Electronically Controllable Fully-Uncoupled Explicit Current-Mode Quadrature Oscillator Using VDTAs and Grounded Capacitors

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DOI: 10.4236/cs.2013.42023    3,423 Downloads   5,621 Views   Citations

ABSTRACT

An electronically controllable fully uncoupled explicit current-mode quadrature oscillator employing Voltage Differencing Transconductance Amplifiers (VDTAs) as active elements has been presented. The proposed configuration employs two VDTAs along with grounded capacitors and offers the following advantageous features 1) fully and electronically independent control of condition of oscillation (CO) and frequency of oscillation (FO); 2) explicit current-mode quadrature oscillations; and 3) low active and passive sensitivities. The workability of proposed configuration has been demonstrated by PSPICE simulations with TSMC CMOS 0.18 μm process parameters.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

D. Prasad, M. Srivastava and D. Bhaskar, "Electronically Controllable Fully-Uncoupled Explicit Current-Mode Quadrature Oscillator Using VDTAs and Grounded Capacitors," Circuits and Systems, Vol. 4 No. 2, 2013, pp. 169-172. doi: 10.4236/cs.2013.42023.

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