The study on voltage controlled oscillator in electronic applications

Abstract

A low power and low phase-noise CMOS VCO Based on biasing of oversized MOS transistors is demonstrated. The LC-VCO used here dissipates 0.1114 mW power under 1.8 V supply voltage. The VCO frequency can be tuned from 11.6 to 12.5 GHz with a measured phase noise of 106 dBc/Hz at 400 kHz offset from 12.5 GHz oscillation frequency. Common figures of merit are 185. © 2011 Springer-Verlag Berlin Heidelberg.