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This paper presents an adaptive body-biased low-voltage VCO. Despite the 0.5-V supply, the VCO uses coarse digital tuning by employing voltage-boosting technique. In addition, the effect of PVT variations is reduced by adaptive body-biasing technique. The proposed VCO is implemented in 0.18 mum CMOS technology and operates at 2.4 GHz. It achieves phase noise of -115.8 dBc/Hz at 1-MHz offset and 7...
A power-optimized low-voltage VCO with wide tuning range is proposed. The VCO achieves low power by optimum selection of inductance in the L-C tank. Despite the low power supply near threshold voltage, the VCO achieves wide tuning range by using a voltage-boosted digital tuning technique. It is shown that the power consumption of VCO with a required output swing and phase noise can be minimized if...
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