 the capacitive-degeneration cross-coupled voltage-controlled oscillator 000 includes a resonating unit 000 and an oscillating unit 000. The resonating unit 000 includes a supply voltage Vcc, first and second inductors Lr0 and Lr0 commonly connected to the supply voltage Vcc, and a varactor capacitance Cr and respective ends of the parasitic resistance Rr and of which are connected in parallel to the first and second inductors Lr0 and Lr0. The oscillating unit 000 includes first and second transistors Q0 and Q0 which are connected to respective ends of the parasitic resistance Rr and of which collectors and bases are cross-coupled to each other