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升级   6.32% TA的每日心情 | 开心 2014-5-20 20:27 |
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签到天数: 2 天 [LV.1]初来乍到
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本帖最后由 wangzheng3056 于 2014-5-16 19:40 编辑
7 b2 W; Z$ z' e- CircuitEquations={Ii (1+gm1/s/c1+gm1*gm2/s/c1/s/c2)Ig,
; Q, |, f7 u1 {4 s\" Z+ r - Io (gm1*gm2/s/c1/s/c2)*Ig};
& _! Y& y! A, W9 a0 m - Current={Ii,Io};
) E8 u( q, }* c# V. w1 L - CircuitRespones=Together[Flatten[Solve[CircuitEquations,Current]]];/ _\" u; u6 A# S0 H! ^ u* v& {
- H=Io/Ii/.CircuitRespones//Together//Simplify;
/ a5 B$ p9 N0 V, |* m. x - Print["H(S)=",H]/ ]8 B/ A0 v9 J# {8 z& X# T+ f
- PoleQpole[H,s]:=Module[{den,fp,Qp},) u7 v4 [, }\" z\" W% e# H6 K0 }/ ]
- den=Denominator[H];: }% R/ ]& F0 w' c0 X3 F* L6 x$ ~% m
- fp=Sqrt[Coefficient[den,s,0]/Coefficient[den,s,2]]/(2 pi);
\" v\" O7 I5 Y% X$ K ~- Q - Qp=1/(Coefficient[den,s,1]/Coefficient[den,s,2]/(2pi fp));
. W2 r D8 i9 X3 e5 [$ H6 D; x6 p# A - Simplify[{fp,Qp}]];
+ V) Z, I0 Y' b& N. l1 @: k/ s- n - ZeroQzero[H,s]:=Module[{fz,num,Qz0},2 x/ Y) U4 i) {$ {' ?
- num=Numerator[H];0 } Q% ^/ N& j4 {6 u+ f
- Qz0=(Coefficient[num,s,2]/Coefficient[num,s,1]);
5 N; q2 Q2 s$ P# |2 v; A& N - fz=Sqrt[Coefficient[num,s,0]/Coefficient[num,s,2]]/(2 pi);
$ O! D# ]* H- e, J! l& v: C - Simplify[{fz,Qz0 fz}]];$ V Y$ s1 @% d# A J6 V5 b' P% w6 r
- {fp,Qp}=Simplify[PoleQpole[H,s]];# t0 M, L) a/ T. M4 d\" m6 I
- Klp=H/.s 0;2 x1 G1 o8 A\" v* H
- PrintLabeledList[{fp,Qp},{"fp","Qp"}];
1 \$ v, o! h% n* o W - DesignOTA1[Qp_,Wp_,C1_,C2_]:=Module[{gm1,gm2},; U- T! e. M/ i: O( ^
- gm1=C1*Wp/Qp;
; Z/ N\" W6 E, h# b$ M - gm2=C2*Wp*Qp;
0 o: {! l' M# i( O& W# I - {C1,C2,gm1,gm2}];
0 V& Z! l8 S7 X; w - {C1,C2,gm1,gm2}=Together[DesignOTA1[Q,W,c1,c2]];
7 G ~) D4 |9 }* E* D& b - PrintLabeledList[{C1,C2,gm1,gm2},{"C1","C2","gm1","gm2"}];& @- x9 D% Q: W* T8 L; L) j: y0 s* {
- Simplify[H]1 \+ K1 C) c, S* U1 G\" a/ ^
- h1=Together[H/.{Q 2.,W N[2*pi*10^6],
: k, E$ C p! H$ s - c1 10.*10^(-12),c2 10*10^(-12)}//N];& |- N0 t/ M\" d! N4 c
- Print["gm1=",gm1/.{Q 2.,W N[2*pi*10^6],
1 j$ x/ f! H3 I* y. t4 r - c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]
, V1 |6 {, O\" t, o% K; p0 i0 T - Print["gm2=",gm2/.{Q 2.,W N[2*pi*10^6],! z& X8 ?6 V2 A9 ~7 r
- c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]
; d: a( J4 m0 C - h=(Numerator[h1]/g)/(Simplify[Denominator[h1]/g])
/ |4 v. y0 q; m! R( e) j3 T - PrintLabeledList[N[{Q,W (2*pi)}/.{Q 2.,W N[2*pi*10^6],+ f\" C K8 m0 [' g1 L1 Q
- c1 10.*10^(-12),c2 10*10^(-12)}//N],{"Qp","fp(Hz)"}];
5 J8 U4 Z$ f- B# t0 e8 J - Rexample=N[{c1*10^(12),c2*10^(12),gm1,gm2}/.{Q 2.,W N[2*pi*10^6], e+ V$ z6 k+ Z- f; b
- c1 10.*10^(-12),c2 10*10^(-12)}//N];
! B; `' q _/ K - PrintLabeledList[Rexample,{"C1(pF)","C2(pF)","gm1","gm2"}];8 z1 `3 Y\" \, X
- Plot[{Abs[h]/.s I*2*pi*f*10^6},{f,0.01,8}. z& [8 w, L! c
- ,PlotRange All
' Q, o$ a7 \( G5 J - ,AxesLabel {"f(MHz)","M(f)"}]
复制代码 这是调整完的程序,麻烦大神们帮忙看看吧) r3 z6 G0 ?, d- O+ L6 u
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