Current-Reused QVCO Based on Source-Connection Coupling

Abstract

This paper presents a current-reused quadrature voltage-controlled oscillator (QVCO) which adopts a source-connection coupling structure. The QVCO simultaneously achieves low phase noise and low power consumption by newly combining current-reused VCOs and coupling transistors. The measured QVCO obtains good FoM of -188.2dBc at a frequency of 2.2GHz with 3.96mW power consumption.