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Simulation of phase noise generated by white noise in 1.7 GHz CMOS LC oscillator

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3 Author(s)
L. Forbes ; Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA ; M. Cheng ; J. Zhou

The phase noise resulting from upconversion of white noise in a CMOS LC oscillator is investigated. HSPICE simulations of phase noise resulting from the random-phase white noise in a 1.7 GHz CMOS LC oscillator have been performed and demonstrate that the phase noise resulting from the upconversion of white noise has a 1/f-dependence on the offset frequency and becomes larger as the white noise increases. The results provide a confirmation by circuit simulations of Leeson's empirical formula, and provide a technique for the design of low noise oscillators

Published in:

Electronics Letters  (Volume:36 ,  Issue: 23 )