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Design Method in Optimization Differential LCVCO
% A( L# A, s! L* v; yMAN J ia-han,ZHAOKun+ P' ~6 d" N7 I3 p
( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)" K& ]2 |! X. m7 E9 F) C; t
Abstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen1 B( h4 l; T% {* \+ n3 s
oise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as
' e/ V* k' v; j2 i2 vdesigning high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.4 H4 u" W- b1 Q
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
; a9 J K8 H7 x+ k x7 F8 Ldescribes 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
1 U# z& `4 ~. p: w5 i, C% Zm eth od is valid.3 q4 U+ s9 M. B, l D4 m
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! {" B1 l- @! c+ X6 L/ J回覆後 可以下載PDF附件 權限10 & 3RDB
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, |5 I6 l" [/ c$ v' D' b7 p" P: [$ f! R[ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ] |
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