Current differencing buffered amplifiers based single resistance controlled quadrature oscillator employing grounded capacitors

A new single resistance controlled quadrature oscillator using two current differencing buffered amplifiers (CDBAs), four resistors and two grounded capacitors is presented. Outputs of two sinusoidal signals with 90degrees phase difference are available in the proposed quadrature oscillator. The oscillation condition and oscillation frequency of the proposed quadrature oscillator are independently controllable through different resistors. The proposed quadrature oscillator employs only grounded capacitors. The use of only grounded capacitors is ideal for integration. Simulation results are included.