Current-Mode Quadrature Oscillator with Grounded Capacitors and Resistors Using Two DVCCs (Circuit Theory)

A new current-mode quadrature oscillator circuit using two differential voltage current conveyors (DVCCs), two grounded capacitors and two grounded resistors is presented. Two high output impedance sinusoid current sources with 90° phase difference are available in the proposed circuit. The oscillation condition and oscillation frequency are orthogonally controllable. The use of only grounded capacitors and resistors makes the proposed circuit ideal for integrated circuit implementation. Simulation results are also included.