Patent ID: 7741922

Claim:
A differential voltage controlled oscillator comprising: a resonator for generating an oscillation frequency corresponding to an input voltage; a first output terminal and a second output terminal, respectively coupled to a first terminal and a second terminal of the resonator, for outputting the oscillation frequency; and a negative resistance cell driven in correspondence to the oscillation frequency, wherein the negative resistance cell includes a switch, and the switch includes a first signal line extended in a first direction, a second signal line formed to be parallel with the first signal line, a source electrode formed between the first and second signal lines, a first gate electrode arranged to be parallel with the source electrode and coupled to the first signal line, a second gate electrode provided to the opposite side of the first gate electrode with respect to the source electrode, and coupled to the second signal line, a first drain electrode provided to the opposite side of the source electrode with respect to the first gate electrode, and coupled to the second signal line, and a second drain electrode provided to the opposite side of the source electrode with respect to the second gate electrode, and coupled to the first signal line.