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In this paper, a wideband LC cross-coupled VCO is designed and realized with the TSMC 0.18 mum CMOS technology. By incorporating band switching capacitors, the overall tuning frequency range is divided into 16 bands, covering 1.17-1.9 GHz (47%). A linear time variant (LTV) model is used to quantitatively analyze voltage biased oscillators. In order to minimize the phase noise, the size of the MOSFET...
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