A Wideband Low Phase Noise Voltage Controlled Oscillator in 0.13μm CMOS

A wideband low phase noise (PN) voltage controlled oscillator (VCO) in 0.13$\mu$m CMOS technology is presented in this paper. In this work, the quality factors of inductor and capacitor are reduced, and the parasitic capacitor is increased, which leads to the deterioration of phase noise and the reduction of tuning range. A wide tuning range (TR) from 13.2 GHz to 21.5 GHz is obtained by varactor and 6-bit switch capacitor arrays, and the ${\mathrm {K}}_{\mathbf{VCO}}$ is less than 250 MHz/V. The low phase noise is realized by optimizing the LC tank quality factor and filtering the tail current source noise. The PN is −113 dBc/Hz@1MHz at the center frequency of 17.5 GHz. The current consumption is 25 mA from a 1.2 V supply, and the ${\mathrm {FOM}}_{\mathbf{T}}$ is −196.4 dBc/Hz.