A multiphase voltage controlled oscillator includes at least one ring oscillating unit and a resistor ring; the ring oscillating unit is formed by connecting a plurality of phase-delay elements in cascade and the resistor ring is formed by connecting a plurality of resistor elements in cascade; wherein the connecting nodes of each ring oscillating unit are electrically connected to the connecting nodes of the resistor ring such that the ring oscillating unit can generate a plurality of oscillating signals with uniform phase differences.
