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Design Method in Optimization Differential LCVCO# ]. t: ~& e8 q
MAN J ia-han,ZHAOKun$ l1 I3 g: C* s2 {
( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)
- X) `/ ^: k+ C/ Z$ `3 W7 k: RAbstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen/ ?/ B3 h( A6 @' u1 W" s) P5 ]9 {
oise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as8 q! D+ Z: }# k2 L& u
designing high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.
) x( h* g! e4 T5 ^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
; ?, \0 R$ y9 b; Q7 Kdescribes 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 v: h0 B. w* G) ~4 S9 Y9 v, H
m eth od is valid.. T# j* l& S& D; T8 {; Z
7 n9 L; G' R% U2 G/ N; S
& k+ T7 T$ e0 M9 k5 O
回覆後 可以下載PDF附件 權限10 & 3RDB2 d6 ]. W3 g! U* f g% ]
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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