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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 Q% g: i w% F, Z/ P" s' E" |
- CircuitEquations={Ii (1+gm1/s/c1+gm1*gm2/s/c1/s/c2)Ig,
$ I2 R/ Y' s% d) P7 w - Io (gm1*gm2/s/c1/s/c2)*Ig};
6 q6 q- j: ~\" Q l9 B - Current={Ii,Io};
# m5 c( e\" i) m/ F/ P6 a& s V' |3 o - CircuitRespones=Together[Flatten[Solve[CircuitEquations,Current]]];
, G; m9 P' Y# C9 w' }( x5 e - H=Io/Ii/.CircuitRespones//Together//Simplify;, N# ]# v\" H' u9 f
- Print["H(S)=",H]8 ^$ x: a {1 n$ e( `\" C
- PoleQpole[H,s]:=Module[{den,fp,Qp},
. ^7 A, p5 p) }. F8 B, p - den=Denominator[H]; C, j: X* A\" a, c
- fp=Sqrt[Coefficient[den,s,0]/Coefficient[den,s,2]]/(2 pi);
. A0 g& n: i- Q\" X2 r: z$ J - Qp=1/(Coefficient[den,s,1]/Coefficient[den,s,2]/(2pi fp));
1 T1 o8 @; K: K9 V5 x% P% d - Simplify[{fp,Qp}]];
4 \% G1 X3 B/ Q0 g. b! H! A - ZeroQzero[H,s]:=Module[{fz,num,Qz0},: l. P1 V8 U- n
- num=Numerator[H];' c% M$ ~ h; R5 S, X$ `
- Qz0=(Coefficient[num,s,2]/Coefficient[num,s,1]);- h5 W$ p: N6 M
- fz=Sqrt[Coefficient[num,s,0]/Coefficient[num,s,2]]/(2 pi);$ z$ ?0 O( U$ \
- Simplify[{fz,Qz0 fz}]]; h/ s2 m* c( N$ u: ]2 n4 T# O
- {fp,Qp}=Simplify[PoleQpole[H,s]];
& s\" W7 L& i' ^( i* U - Klp=H/.s 0;
2 Y) ~3 T; b2 Q - PrintLabeledList[{fp,Qp},{"fp","Qp"}];) k8 z' \+ H- M& g9 T# v3 T
- DesignOTA1[Qp_,Wp_,C1_,C2_]:=Module[{gm1,gm2},
1 o9 ~' {9 Q& S0 a - gm1=C1*Wp/Qp;3 s8 z/ ^. G6 r! E& R) A
- gm2=C2*Wp*Qp;
) J0 Y- @3 p. X) b7 [ - {C1,C2,gm1,gm2}];! e8 `6 \2 ~% n9 H- V. [' x4 [
- {C1,C2,gm1,gm2}=Together[DesignOTA1[Q,W,c1,c2]];
2 I% w4 H4 J3 ]: X5 o4 W. N9 l - PrintLabeledList[{C1,C2,gm1,gm2},{"C1","C2","gm1","gm2"}];
. b1 q. E0 E$ K1 ]5 c - Simplify[H]
5 s! I; z: a9 W1 [2 X$ u+ Y: j+ g L - h1=Together[H/.{Q 2.,W N[2*pi*10^6],
# V- p1 ~0 l, A - c1 10.*10^(-12),c2 10*10^(-12)}//N];
1 {, B* M# T6 ?% X/ c8 R - Print["gm1=",gm1/.{Q 2.,W N[2*pi*10^6],# X\" I4 N% Q9 x0 m6 p
- c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"], ^% k0 J' B0 ]0 z3 \; t! l& z
- Print["gm2=",gm2/.{Q 2.,W N[2*pi*10^6],% j/ g% a# Y\" A\" z
- c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]# B8 [( P) L/ G7 `4 n/ j
- h=(Numerator[h1]/g)/(Simplify[Denominator[h1]/g])/ ~! b& Z* i5 J, A! P
- PrintLabeledList[N[{Q,W (2*pi)}/.{Q 2.,W N[2*pi*10^6],# F7 J8 J\" K: o
- c1 10.*10^(-12),c2 10*10^(-12)}//N],{"Qp","fp(Hz)"}];* e2 p! F0 R: \, F6 } \
- Rexample=N[{c1*10^(12),c2*10^(12),gm1,gm2}/.{Q 2.,W N[2*pi*10^6],
; P4 m+ X# O& X. v - c1 10.*10^(-12),c2 10*10^(-12)}//N];
0 D2 _; K' B! l - PrintLabeledList[Rexample,{"C1(pF)","C2(pF)","gm1","gm2"}];
% |6 {9 h( \5 V - Plot[{Abs[h]/.s I*2*pi*f*10^6},{f,0.01,8}- L$ T. c S$ B2 Y
- ,PlotRange All
0 `+ p1 ^( S9 u$ ~1 e - ,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
4 @3 u& i8 ?6 w3 m% z7 @9 ?9 l |
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