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A 40GHz wide-locking-range frequency divider and a low-phase-noise VCO are implemented in 0.18mum CMOS technology. The frequency divider demonstrates a locking range of 10.6GHz with 0dBm input power while the VCO exhibits a phase noise of -108.65dBc/Hz at 1MHz offset. Each of the 2 circuits consumes 6mW from a 1V supply.
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 2 GHz differentially tuned CMOS monolithic LC-VCO was designed and fabricated in 0.18-mum CMOS process. The VCO has a 16.15% tuning range (from 1.8998 GHz to 2.2335 GHz) due to a combination of analog and digital tuning technique (4-bit binary switch-capacitor array). The measured phase noise is -118.17 dBc/Hz at 1 MHz offset from 2.158 GHz carrier. With the presented smart switch, the phase noise...
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