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Design Method in Optimization Differential LCVCO+ A2 x" v% q* C% P# {% M3 }# ?5 J
MAN J ia-han,ZHAOKun
, i6 ~) \, r+ u9 j- _! V b( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)& B( s; x7 F2 R9 c! ^$ w" t
Abstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen
/ T+ R. o4 B5 _' R0 [+ coise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as3 j3 N _4 m2 W% J7 u3 t! m" y
designing high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.
% R6 g$ H: i7 X/ w' bA 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
/ t7 ~1 r" J- o0 vdescribes that the phase noise of the V C O is - 120.4dB c/H z@ 600 kH z. T his result proves th at the4 }5 L. }) k: C M+ Y# P
m eth od is valid.
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* r$ t/ V1 G* L5 ^# Q回覆後 可以下載PDF附件 權限10 & 3RDB3 o; V$ y0 \# Z) ]
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[ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ] |
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