Design of low-power 24 GHz voltage-controlled oscillator

Abstract

This paper proposes a 24 GHz voltage-controlled oscillator (VCO) for the short range automotive collision avoidance radar. A low power and small area in fully-differential configuration has been proposed. The proposed circuit is implemented using TSMC 0.13 μm mixed signal/RF CMOS process, and it is powered by a 1.5 V supply. The overall circuit with core VCO and two buffers is biased at the low supply voltage of 0.9 V. The fabricated VCO showed very low power dissipation of 5.5 mW and tiny chip area of 0.0576 mm2 at the operation frequency of 24 GHz as compared to conventional research results.