High-stability oscillator circuit and realization method thereof

The invention discloses a high-stability oscillator circuit and a realization method thereof. The oscillator circuit comprises a frequency-division driving circuit for dividing the frequency of an oscillation signal with the frequency as Fout output by a voltage-controlled oscillator by N to output a frequency-division signal with the frequency as Fout/N to a charge pump circuit, and outputting an in-phase frequency-division signal and an anti-phase frequency-division signal to the charge pump circuit after processing the frequency-division with the frequency as Fout/N; the charge pump circuit for comparing the feedback current output by the reference current and frequency current conversion circuit and in proportion with the frequency-division signal Fout/N frequency and outputting the error current under the control of the in-phase frequency-division signal and the anti-phase frequency-division signal; a low-pass filter circuit for converting the error current into the stable control voltage; a voltage-cont