Abslracf -This paper presents a 1.3GHz fully integrated ,diNerential LC VCO with fzO% tuning range (1.0 l o I.7GHz: including coarse and fine tuning) and tank quality ,factor of 6 using diNerenlial spiral inductor. The measured phase noise at 60KHz and 900KHz oNscI frequency from a 1.3GHz center frequeney is -102dBdHz and -123dBc.
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