A Low Power Low Phase Noise Lc Voltage-Controlled Oscillator

Abstract

Abstract-A low phase noise CMOS complementary cross-coupled LC-tank voltage-controlled oscillator (VCO), implemented with TSMC 0.18 µm 1P6M CMOS technology, is presented. Double pair pseudoresistance transistors biased by the tapped center of the inductor are utilized to reduce the DC bias current. The circuit consumes 1.55 mA from a 1.5 V supply voltage which saves up to 52.4% power, compared with the conventional one. Furthermore, an adaptive body biasing technique (ABB) is used to overcome the effect of PVT variations. The VCO is tunable from 2.58 to 3.07 GHz and has a phase noise −122.7 dBc/Hz at 1 MHz offset from the 3 GHz carrier. The Figure

Design of low power CMOS LC VCO for direct conversion transceiver

“…Zhou et al proposed a low power low phase noise LC VCO in which an adaptive body biasing technique was used to reduce the PVT variation effect. The circuit drew 1.55 mA from a 1.5 V supply voltage [10]. Yu presented a low voltage low power LC VCO [11].…”