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Design Method in Optimization Differential LCVCO3 o. R6 n8 h. ~9 }1 u0 ?
MAN J ia-han,ZHAOKun
6 z: c+ x4 f2 @( V+ ]4 [6 v( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)8 `$ z, y5 p; H0 p" n( H/ V0 w; D- w
Abstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen
3 U1 `# |0 }+ u0 D1 \3 @oise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as# ?( w2 {3 j9 ]6 K
designing high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.
# v7 |# C# G* {# eA 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
! h1 n" i. d5 k$ Pdescribes 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
& e8 v( c) c: g: C' M' z$ Nm eth od is valid.
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[ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ] |
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