Current Differencing Transconductance Amplifier (CDTA) Based Current Mode Quadrature Oscillator

This paper presents a current mode quadrature oscillator using current differencing transconductance amplifier (CDTA). The proposed circuit uses a single CDTA, one resistor, and two capacitors. The designed circuit enjoys the advantages of independent control of condition of oscillation (CO) and frequency of oscillation (FO). The performance of the proposed circuit is examined using PSPICE with model parameters of TSMC 0.18 µm.

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