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Design Method in Optimization Differential LCVCO
9 g& w' K' R1 I- q# BMAN J ia-han,ZHAOKun$ c8 Z4 K! l% \; M/ b$ ?& r( D9 h
( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)
( O! R! ^& ]: p( W, G- _/ oAbstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen
/ | z: i( G N- S/ w- uoise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as5 {7 _! \- d1 @0 J A% t
designing high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.
& v$ r3 f3 a/ z/ b( x; d- y0 X( j1 sA 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 result2 B6 h2 Y9 C x6 F( D
describes 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 `. V! K, f% C* Bm eth od is valid.
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, ^! H" w6 P, ~3 @7 z9 q' K; }[ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ] |
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