Single-Resistance-Controlled Current-Mode Quadrature Sinusoidal Oscillator

A new single-element-controlled current-mode quadrature oscillator circuit using second-generation current conveyors (CCIIs) is presented. The proposed oscillator is consisted of two CCIIs, two grounded capacitors and three grounded resistors. The circuit is beneficial to monolithic integrated circuit implementation by the use of grounded passive components. In addition, a new current-controlled sinusoidal oscillator using two second-generation current-controlled conveyors (CCCIIs), two grounded capacitors and one grounded resistor can be achieved by replacing CCIIs and resistors series at X terminals with CCCIIs. The oscillation frequencies of the CCII-based can be controlled by a grounded resistor while the CCCII-based can be controlled by a bias current. The realized of both circuits pro-tide four quadrature current outputs at high output impedance nodes. PSPICE simulation results that confirm the theoretical predictions are given.