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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 w; t# i) Y' k5 s- CircuitEquations={Ii (1+gm1/s/c1+gm1*gm2/s/c1/s/c2)Ig,
8 o, C, n) v7 q/ Y3 I' D - Io (gm1*gm2/s/c1/s/c2)*Ig};( B1 B% F! {6 y4 Q! t' Q
- Current={Ii,Io};
3 ~3 O- p0 g6 f - CircuitRespones=Together[Flatten[Solve[CircuitEquations,Current]]];
% u4 o# l, @3 i, \+ |% z - H=Io/Ii/.CircuitRespones//Together//Simplify;
6 g4 M\" q+ f3 Z3 r\" O8 Q7 Q, p - Print["H(S)=",H]/ ~\" o3 B3 [' A) [ z& |% Y: m& }
- PoleQpole[H,s]:=Module[{den,fp,Qp},! Q4 a/ M6 f* b+ K: {( v. ?8 i. ^
- den=Denominator[H];% J- e2 o$ ~. C7 A8 n2 @; Z2 {0 H& \
- fp=Sqrt[Coefficient[den,s,0]/Coefficient[den,s,2]]/(2 pi);5 v6 A! z3 E5 `. `; h
- Qp=1/(Coefficient[den,s,1]/Coefficient[den,s,2]/(2pi fp));) [2 P7 W! |3 _2 i# f
- Simplify[{fp,Qp}]];3 d9 G8 f+ s& n7 v ~% ~
- ZeroQzero[H,s]:=Module[{fz,num,Qz0},7 h7 Y\" V2 {' K0 Z
- num=Numerator[H];
) t6 S0 l: |8 V* T& U6 ~ - Qz0=(Coefficient[num,s,2]/Coefficient[num,s,1]);
6 z% J7 x9 I\" [$ h8 b2 ~# E - fz=Sqrt[Coefficient[num,s,0]/Coefficient[num,s,2]]/(2 pi);6 @) Y( ~$ O8 l4 ]+ K# m
- Simplify[{fz,Qz0 fz}]];
; E/ [8 z+ X: b- G3 X% c& ~ M# |8 q - {fp,Qp}=Simplify[PoleQpole[H,s]];
# b1 ^9 x+ i- U! t - Klp=H/.s 0;
* Z$ D/ {2 x5 y9 b% u! g - PrintLabeledList[{fp,Qp},{"fp","Qp"}];! j2 l) P4 t* n4 |! Q
- DesignOTA1[Qp_,Wp_,C1_,C2_]:=Module[{gm1,gm2},& H7 s: u6 Z* K1 b. K
- gm1=C1*Wp/Qp;: V$ s/ c Q9 s
- gm2=C2*Wp*Qp;
9 I; d) G7 B K% T* f - {C1,C2,gm1,gm2}];6 s d, Z2 l( \/ m
- {C1,C2,gm1,gm2}=Together[DesignOTA1[Q,W,c1,c2]];
7 z6 j$ }5 s% I! } - PrintLabeledList[{C1,C2,gm1,gm2},{"C1","C2","gm1","gm2"}];
\" b' j& ?; i6 K/ _& l - Simplify[H]
$ k/ q# Z% p' I$ y9 W+ ^\" D. r: y - h1=Together[H/.{Q 2.,W N[2*pi*10^6],
7 l# m, g0 S+ c: V5 O, W - c1 10.*10^(-12),c2 10*10^(-12)}//N];/ `' Q( ^- @( a
- Print["gm1=",gm1/.{Q 2.,W N[2*pi*10^6], L+ n9 f9 G |# Q9 K6 J4 z
- c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]/ ` Y; f' C0 c& C3 L. u
- Print["gm2=",gm2/.{Q 2.,W N[2*pi*10^6],
: ]8 }* G o0 A2 \, Z9 p - c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]
7 j) N: F. E% o8 [8 c8 N8 X - h=(Numerator[h1]/g)/(Simplify[Denominator[h1]/g])
+ i# x. c0 m1 c: e& P( s - PrintLabeledList[N[{Q,W (2*pi)}/.{Q 2.,W N[2*pi*10^6],
6 A3 B% o) M% i3 h' h - c1 10.*10^(-12),c2 10*10^(-12)}//N],{"Qp","fp(Hz)"}];
2 ^) ?- o& Z' v - Rexample=N[{c1*10^(12),c2*10^(12),gm1,gm2}/.{Q 2.,W N[2*pi*10^6],
7 _2 o; r3 Y' y* i, c4 R' E - c1 10.*10^(-12),c2 10*10^(-12)}//N];, J) m8 U8 L& k! @
- PrintLabeledList[Rexample,{"C1(pF)","C2(pF)","gm1","gm2"}];
; m, h. e; a/ G, e - Plot[{Abs[h]/.s I*2*pi*f*10^6},{f,0.01,8}
, @1 e8 z) V3 I) c - ,PlotRange All( |1 u& ~; A. \2 `, g) Q
- ,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
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