Optimal design of a Wide Range Pre-charging Three Stage Ring Voltage Control Oscillator at 32nm technology
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 9
Abstract
The current starved ring vco requires 5 minimum stages to get the optimum oscillations. But the differential ring vco attains the required oscillations within three stages only. It maintains the minimal power dissipation even after the allocation of three vco stages and hence mostly preferred for RF applications. The conventional ring VCO has limitation of low tuning range. So overcome this limitation, a pre-charge P-channel MOSFET is added to the design. After the addition of this efficient component to the ring VCO design, VCO oscillation frequency rise to 10.1-13.97 GHz with tuning voltage of 0-3.4V. The phase noise obtained from this ring VCO is -97 dBc/Hz at 1MHz offset frequency and FOM is -179.47 dBc/Hz. It is an efficient implementation as compared to the peer ring VCO designs as depicted in the research paper. The circuit is designed to operate at 1.2V supply supplemented with power consumption of 0.566-0.951 mW.
Authors and Affiliations
Shitesh Tiwari, Sumant Katiyal, Parag Parandkar
Keywords
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