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Design Method in Optimization Differential LCVCO
4 ^1 h7 D2 |# l" K3 ?9 rMAN J ia-han,ZHAOKun
" O: Z4 i' I5 n( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)
5 A5 @# w L) }6 G- O5 gAbstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen/ B* c: E7 T# N$ L! g+ ?
oise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as
, [* k- u' j3 l! b4 J# i1 _" }& R$ Cdesigning high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.
" T) m% C/ ]* @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
; b( c5 t( U X" i8 G2 idescribes 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
" b0 c# X6 R( Q: Y5 R, L7 ~1 ym eth od is valid.
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: M. G' A/ Y- K0 j/ S, {回覆後 可以下載PDF附件 權限10 & 3RDB
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. I, e* \4 u% K# Z) x4 B[ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ] |
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