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Design Method in Optimization Differential LCVCO
$ h# E. e9 K- C- H7 nMAN J ia-han,ZHAOKun9 d" P6 ?$ M# q
( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)4 C$ C1 k4 |/ y
Abstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen0 F0 {! k! n* U5 g- p
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( n# ~0 s( b5 y$ g8 `$ d7 c. z
designing high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.$ R4 p8 I! H$ f) g4 T
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
) h( A8 e( T$ L0 u Ydescribes 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
- p' ]/ L0 ~3 |$ ?) @6 u, lm eth od is valid.
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' ]) X) z# r1 h, H1 v回覆後 可以下載PDF附件 權限10 & 3RDB
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[ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ] |
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