差分LCVCO的設計方法[簡]

sjhor

Design Method in Optimization Differential LCVCO
4 f/ `1 p7 Z1 F& S- `  V$ PMAN J ia-han,ZHAOKun
. I. i# J, A; W! s8 R7 t$ G( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)
Abstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen
oise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as
4 l! M: R3 N  F& Ddesigning high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.
A t the end of th is paper, a 2.4G H z fully integrated V C O design is m entioned. T he sim ulation result
3 ^5 Z6 q5 @" q6 P* d! x( idescribes that the phase noise of the V C O is - 120.4dB c/H z@ 600 kH z. T his result proves th at the
) P$ h+ R2 G8 m+ Z9 D/ k3 F. Sm eth od is valid.

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5 o( r- b: q% }. Z7 I/ |  c$ ][ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ]