Precise insensitive tunable RC-oscillator realisation using current conveyors

Using second generation current conveyor (CCII) active elements, some new RC-oscillator configurations are proposed, which are based on grounded FDNR (D) driving point immittance realisation. Generation of a pole pair located precisely on the imaginary axis, even with nonideal CCII elements, can be achieved with suitable design. The active Sw0 and SD sensitivities are quite low, and with matched CCII characteristics, these sensitivities can be made zero for some realisations. In all the proposed configurations, w0 is single grounded-resistor tunable and both the capacitors are grounded.