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Design Method in Optimization Differential LCVCO
% r+ g( v2 ]' F" S! l1 XMAN J ia-han,ZHAOKun4 ]3 i, a5 {- W( ^5 W$ L
( Institute of Microelectronic of Chinese Academy of Sciences, Beijing 1 00 0 29 , China)5 D8 Y$ V" S2 I
Abstract:A n analysis of tw o fam ous oscillator phase- noise m odules derives the relations betw een phasen
( B& O9 R6 e% W! `oise and circuit param eters. A nd hen ce, a design strategy to optim ize the phase noise of V C O , such as% x2 b; ~; e4 N: U8 K) L! ~- T! j+ ?
designing high Q inductor, adjusting tail current and sizing the dim ensions of nM O S and pM O S, is presented.$ r! Q0 A. |* G! q v0 O1 |; B
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 ]. d. W% c5 R) p9 S! k6 ^
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
) J$ C* |2 x n) y2 f3 x- qm eth od is valid. v8 r' `! f8 F: o4 ?% Y8 G5 V( Z
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回覆後 可以下載PDF附件 權限10 & 3RDB: p. a3 F1 [' k! z7 [/ I" o8 W
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- M1 m( `- d* d X0 c- h[ 本帖最後由 sjhor 於 2007-5-17 10:26 PM 編輯 ] |
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