A 0.18μm CMOS 8GHz Quadrature VCO for UWB Application

This paper presents a fully integrated 8-GHz quadrature-voltage-controlled oscillator (QVCO) design for high data rate ultra wideband (UWB) communication applications. Implemented in 0.18μm CMOS technology, the designed QVCO achieved a tuning range of 7.8GHz to 8.44GHz, a phase noise of -94.7dBc/Hz at 1MHz offset consuming 8.3mA core current at 1.8V supply.