Low phase noise V-band push-push voltage controlled oscillator using 0.15 μm GaAs pseudomorphic high electron-mobility transistor technology

A low phase noise, low dissipated power and small-size V-band voltage-controlled oscillator (VCO) using dual cross-coupled pair configuration, capacitance-splitting technique and push-push topology is presented. The V-band VCO circuit uses 0.15 μm GaAs pseudomorphic high electron-mobility transistor technology. The VCO has low phase noise, of -108.43-dBc/Hz, at a 1-MHz offset from a 62-GHz carrier and can be tuned from 61.11 to 62.66-GHz. The figure of merit is -190.45-dBc/Hz. The power consumption of the VCO with 1.04-mm² chip area is 24 mW, from a 1 V power supply.