Abstract
A novel third order quadrature oscillator using current differencing cascaded transconductance amplifier (CDCTA) has been described in this paper. The oscillator that has been proposed consists of three grounded capacitors and one active element that result both voltage and current output signals. The grounded capacitor usage obtains the circuit ideal for the implementation of integrated circuit (IC). The terminal of current output possesses level of high-impedance that could be directly connected to the next stage without using buffer circuits. The frequency of oscillation and condition of oscillation could be controlled electronically and orthogonally by setting the bias currents. The oscillator that was proposed has been used to apply for an amplitude modulation signal generator. To confirm the structure that was proposed has used the results of PSPICE simulation.
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