Triple-push type voltage-controlled oscillator

A voltage-controlled oscillator comprising:

• a voltage-controlled oscillation part including a plurality of oscillation circuits configured to output an output signal based on a control voltage, the plurality of oscillation circuits connected in a triple-push structure;
• a plurality of phase shifters connected respectively to output ends of the oscillation circuits and configured to change a phase of output signals outputted from the output ends of the oscillation circuits;
• and
• an output part configured to output a final output signal by adding the output signals outputted with changed phases from the plurality of phase shifters,
• wherein the plurality of phase shifters selectively change the phases of the output signals outputted from the output ends of the respective oscillation circuits in correspondence to the final output signal selectively outputted by the output part.