In this paper, we present an analog design of tunable quadrature voltage-controlled oscillator (QVCO). The QVCO uses a cross coupled CMOS core with differential inductor with a capacitor bank to tune it around 60GHz range for 5G wireless technology solutions. It incorporates an in-phase injection circuit for coupling between the two oscillators. The proposed circuit is designed and simulated in UMC 65nm technology. Simulation results showed a tuning range of 55.5 to 62.9GHz and a worst-case phase noise of -99.26 to -97.29 dBc/Hz at 1MHz offset. The resulting figure-of-merit (FOM) comes to be -190.34 to -189.46 dBc/Hz at 1MHz offset and the corresponding FOM for tuning (FOMT) is -192.28 to -191.4 dBc/Hz at 1MHz offset.
S. Raman, V. Vignesh, and Dr. Navin Kumar, “Design of Quadrature Voltage Controlled Oscillator at 60GHz in 65nm CMOS”, 2018 International Conference on Advances in Computing, Communications and Informatics (ICACCI). IEEE, Bangalore, India, 2018.