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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 1 i V t1 X" {8 [
- CircuitEquations={Ii (1+gm1/s/c1+gm1*gm2/s/c1/s/c2)Ig,, b( {0 W! U. |5 x) I* y
- Io (gm1*gm2/s/c1/s/c2)*Ig};& {5 I. D8 ^* z ]* v. E& @$ `
- Current={Ii,Io};
, K7 n0 s! }* M6 \! L* }* R - CircuitRespones=Together[Flatten[Solve[CircuitEquations,Current]]];
9 q; w: ]+ c$ \( Z - H=Io/Ii/.CircuitRespones//Together//Simplify;
1 q5 E! j6 D, [8 ^ H - Print["H(S)=",H]
2 W1 K\" d* K' O, e) |; X! u' D - PoleQpole[H,s]:=Module[{den,fp,Qp},$ T, z' ?$ S9 e8 o
- den=Denominator[H];
' b' W' I, T& `: ?' e; t9 l - fp=Sqrt[Coefficient[den,s,0]/Coefficient[den,s,2]]/(2 pi);. h5 _* a+ ` Q5 z2 z/ B( d# V\" N
- Qp=1/(Coefficient[den,s,1]/Coefficient[den,s,2]/(2pi fp));. O0 [9 g; Z\" a8 P6 A9 s, _
- Simplify[{fp,Qp}]];. \. i6 c) S ~( A
- ZeroQzero[H,s]:=Module[{fz,num,Qz0},' B, W5 u: p; l2 c
- num=Numerator[H];; [2 a& `, P9 G H7 B+ s
- Qz0=(Coefficient[num,s,2]/Coefficient[num,s,1]);# D0 I6 K3 ?/ E% P0 H: R, S
- fz=Sqrt[Coefficient[num,s,0]/Coefficient[num,s,2]]/(2 pi);
- {. _! e, j1 |1 f - Simplify[{fz,Qz0 fz}]];
\" B) b) H$ X( W& l4 U - {fp,Qp}=Simplify[PoleQpole[H,s]];
: ^& ^1 \/ k2 {. ~ - Klp=H/.s 0;! y( l: P6 e& i; V0 L9 u
- PrintLabeledList[{fp,Qp},{"fp","Qp"}];
+ v# T\" B9 [ R7 u% E- V' j9 ?+ r - DesignOTA1[Qp_,Wp_,C1_,C2_]:=Module[{gm1,gm2},; z! L8 ~) r2 D( Y4 R0 o; C' _4 t/ A
- gm1=C1*Wp/Qp;& z2 g9 U4 {* R1 j( w0 o* _: V
- gm2=C2*Wp*Qp;# A9 j/ Y& q. ~* M# }
- {C1,C2,gm1,gm2}];
, p9 Y\" E8 X6 h8 }4 ~( I - {C1,C2,gm1,gm2}=Together[DesignOTA1[Q,W,c1,c2]];% _3 ]# Z4 B( U, E: M4 L0 R
- PrintLabeledList[{C1,C2,gm1,gm2},{"C1","C2","gm1","gm2"}];# i( k. B8 S7 _4 @& T8 j\" \2 \
- Simplify[H]) r7 O; |1 V; c: t# Q
- h1=Together[H/.{Q 2.,W N[2*pi*10^6],, k' Q- |\" i3 @: F& ]; n( N$ R
- c1 10.*10^(-12),c2 10*10^(-12)}//N];
, r9 i% w# I7 ]% C - Print["gm1=",gm1/.{Q 2.,W N[2*pi*10^6],* ?& D$ `) x( N* `
- c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]
\" Q/ ^9 S h# c - Print["gm2=",gm2/.{Q 2.,W N[2*pi*10^6],
0 |. S4 E1 d% d5 d$ W5 e - c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]* _* P\" B\" F\" e5 `9 N& ~$ x
- h=(Numerator[h1]/g)/(Simplify[Denominator[h1]/g])
. n% m\" {& ^/ L; s( t; S- F/ l - PrintLabeledList[N[{Q,W (2*pi)}/.{Q 2.,W N[2*pi*10^6],
- N% X+ R% X# |$ ]. q - c1 10.*10^(-12),c2 10*10^(-12)}//N],{"Qp","fp(Hz)"}];
& S2 S% G8 J6 G3 J) v8 ^8 U - Rexample=N[{c1*10^(12),c2*10^(12),gm1,gm2}/.{Q 2.,W N[2*pi*10^6],
( Q% v' h7 _7 w7 W - c1 10.*10^(-12),c2 10*10^(-12)}//N];% ^# b+ o, V: y4 \
- PrintLabeledList[Rexample,{"C1(pF)","C2(pF)","gm1","gm2"}];\" x {9 ^5 V! @5 [+ u
- Plot[{Abs[h]/.s I*2*pi*f*10^6},{f,0.01,8}, v- V# b0 @) w4 j) B5 j- w\" k
- ,PlotRange All# y# e, g5 g! \' d9 l. e# S: i
- ,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8 y A, F: l, `* w# g% h& V
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