Main Article Content
The impact of MOS transistors’ gate resistance on the phase noise performance of CMOS LC oscillators is investigated. As oscillation frequencies approaches 10 GHz and beyond, the loss due to the gate resistance starts to dominate the total Q factor of the oscillators’ LC resonators, degrading the phase noise. A detailed analysis of the Q factor including the gate resistance is given, and this leads to a design strategy to mitigate the impact via the concept of minimum inductance. Simulations of oscillators for the oscillation frequencies ranging from 2 GHz to 32 GHz are provided to verify the impact, and to demonstrate the integrity of the analysis and design strategy.
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Faculty of Engineering and Technology
Mahanakorn University of Technology
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