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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
: ^0 z; o5 l& v: |9 c- CircuitEquations={Ii (1+gm1/s/c1+gm1*gm2/s/c1/s/c2)Ig,+ O( s6 I6 j) Y
- Io (gm1*gm2/s/c1/s/c2)*Ig};
8 w# w/ m t: W% e5 R' }- P c+ k- t - Current={Ii,Io};- I$ U/ k3 ^* @; x. d9 h
- CircuitRespones=Together[Flatten[Solve[CircuitEquations,Current]]];
% ~6 \0 u( ?' T - H=Io/Ii/.CircuitRespones//Together//Simplify;
) ]$ R: f Z8 i0 }: ^ - Print["H(S)=",H]
x! ?, c' o) r4 j. j - PoleQpole[H,s]:=Module[{den,fp,Qp},2 B* O7 ^ ?% O$ `
- den=Denominator[H];
9 T3 Z% z# Y G E* {9 w1 ~( c$ W - fp=Sqrt[Coefficient[den,s,0]/Coefficient[den,s,2]]/(2 pi);
\" }) A( ]: w4 o5 \ - Qp=1/(Coefficient[den,s,1]/Coefficient[den,s,2]/(2pi fp));
* [7 n\" s! S/ `, P m! u - Simplify[{fp,Qp}]];+ g) Z5 g. d; Y1 e
- ZeroQzero[H,s]:=Module[{fz,num,Qz0},
( r+ s; a. k) U5 Y9 A/ j - num=Numerator[H];% Y, |8 g Y6 c% B: {
- Qz0=(Coefficient[num,s,2]/Coefficient[num,s,1]); K3 ^5 t7 L, @& i9 a* V# a% x' D
- fz=Sqrt[Coefficient[num,s,0]/Coefficient[num,s,2]]/(2 pi);, O/ U5 _6 Q( y$ \3 ]& G
- Simplify[{fz,Qz0 fz}]];7 A+ Q v1 V7 g, Q, r7 C
- {fp,Qp}=Simplify[PoleQpole[H,s]];
+ \6 f6 C+ N0 y\" J/ w2 s\" Y - Klp=H/.s 0;) f. \! Q2 k. C4 u7 Q, j
- PrintLabeledList[{fp,Qp},{"fp","Qp"}];
' K; @2 I* D& Y+ w1 P) n - DesignOTA1[Qp_,Wp_,C1_,C2_]:=Module[{gm1,gm2},
3 y1 b7 A9 |% V0 n# a+ r! g' P - gm1=C1*Wp/Qp;
# `\" B5 ^; }' g: | - gm2=C2*Wp*Qp;% G% ~: o0 ~0 K/ s/ R: F
- {C1,C2,gm1,gm2}]; h1 F9 c0 i8 v/ ]
- {C1,C2,gm1,gm2}=Together[DesignOTA1[Q,W,c1,c2]];
5 \; O* ]! X @% T4 k - PrintLabeledList[{C1,C2,gm1,gm2},{"C1","C2","gm1","gm2"}];
7 C\" x5 K' V- U1 P3 c+ k - Simplify[H]- X- d2 ?$ S& K& l
- h1=Together[H/.{Q 2.,W N[2*pi*10^6],
4 y5 V' b4 k2 n: b3 l9 l - c1 10.*10^(-12),c2 10*10^(-12)}//N];+ H1 v5 R K$ @
- Print["gm1=",gm1/.{Q 2.,W N[2*pi*10^6],
- @/ ^5 k4 p# M. J1 {% H\" G( r - c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]# B5 g' |1 ~2 U% a\" f: {/ K4 n9 D
- Print["gm2=",gm2/.{Q 2.,W N[2*pi*10^6],
# m% Y% e' v% N6 |) f0 X - c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]
& q/ u/ ~1 j* f - h=(Numerator[h1]/g)/(Simplify[Denominator[h1]/g])
( E( K- C% F9 S+ x v. c/ Z - PrintLabeledList[N[{Q,W (2*pi)}/.{Q 2.,W N[2*pi*10^6],\" g) n5 G3 } \\" N4 A
- c1 10.*10^(-12),c2 10*10^(-12)}//N],{"Qp","fp(Hz)"}];\" u$ p, w+ K\" N$ l3 K) z3 S! a
- Rexample=N[{c1*10^(12),c2*10^(12),gm1,gm2}/.{Q 2.,W N[2*pi*10^6],+ H# P/ r5 O\" S; H/ h\" d
- c1 10.*10^(-12),c2 10*10^(-12)}//N];
, L3 Y8 z/ j) V* n. S6 |9 z& F _9 f - PrintLabeledList[Rexample,{"C1(pF)","C2(pF)","gm1","gm2"}];
, s0 k! ]& p) S& v - Plot[{Abs[h]/.s I*2*pi*f*10^6},{f,0.01,8}
, C( w' f5 E, f3 h - ,PlotRange All
) R& m j& y) F0 J\" q9 d - ,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
9 B" d; [! ~# Z7 L' a7 j |
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