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Design Method in Optimization Differential LCVCO# J) _/ {; D: w5 z6 y" ?
MAN J ia-han,ZHAOKun
) C6 F; `! r. m( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)
5 `. t+ O2 C, C* C3 BAbstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen- J+ H; O3 K9 w. {/ U
oise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as
- L9 a! [, T- Q9 V/ xdesigning high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.
2 K- U- M" m; \4 |# e+ TA 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
" _: Y+ k3 A; u5 S9 M& U& `) V3 D; fdescribes 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
# w. m3 Z' Y0 G, G+ wm eth od is valid.
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- U+ [/ ]7 F$ S3 T
回覆後 可以下載PDF附件 權限10 & 3RDB1 m+ Q, v$ E. ]0 x( R. ^' H
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[ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ] |
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發表於 2007-5-17 22:22:27
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太棒了~~~現在亟需VCO資料