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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 q# A2 @4 ~' L( a
- CircuitEquations={Ii (1+gm1/s/c1+gm1*gm2/s/c1/s/c2)Ig,
( j& P4 N& P& c; N - Io (gm1*gm2/s/c1/s/c2)*Ig};, R) Y h9 _9 w8 }) r
- Current={Ii,Io};( J! v1 v9 f; v% Z z
- CircuitRespones=Together[Flatten[Solve[CircuitEquations,Current]]];
9 k4 n9 a, h0 q$ l. U5 W - H=Io/Ii/.CircuitRespones//Together//Simplify;/ ]: W/ a2 y2 w5 E
- Print["H(S)=",H]
G8 u2 J; @) \( ? - PoleQpole[H,s]:=Module[{den,fp,Qp},
\" }# K( i* _8 o- _( h2 s! | - den=Denominator[H];5 ?5 O' ^$ s. K$ `# n) W8 R% x
- fp=Sqrt[Coefficient[den,s,0]/Coefficient[den,s,2]]/(2 pi);\" O8 S% G6 M1 v: e* \- |6 r
- Qp=1/(Coefficient[den,s,1]/Coefficient[den,s,2]/(2pi fp));# C( F( P8 `. ~* M- p
- Simplify[{fp,Qp}]];
4 L; P6 A, ?: q. B4 Q5 N! q8 |# {: R - ZeroQzero[H,s]:=Module[{fz,num,Qz0},
4 d1 K# P8 P+ u8 C* K - num=Numerator[H];2 {6 F; i- ^5 {5 H2 e% d\" I
- Qz0=(Coefficient[num,s,2]/Coefficient[num,s,1]);6 U- n5 e4 f/ A\" ?4 J% b# A) C k
- fz=Sqrt[Coefficient[num,s,0]/Coefficient[num,s,2]]/(2 pi);! b( }3 O% y5 t& Q5 {0 s
- Simplify[{fz,Qz0 fz}]];
# A: t5 ?' f' ~\" K# X2 p - {fp,Qp}=Simplify[PoleQpole[H,s]];
/ o/ Y3 E d. a; J/ h+ w - Klp=H/.s 0;
* Y! U! @. T2 F3 {$ Y/ S\" n) J Z - PrintLabeledList[{fp,Qp},{"fp","Qp"}];
( T l: H+ y; y4 r - DesignOTA1[Qp_,Wp_,C1_,C2_]:=Module[{gm1,gm2},
. V! I8 I( V$ x; e. _/ [ - gm1=C1*Wp/Qp;- B* o, V6 p$ t) O, u+ V
- gm2=C2*Wp*Qp;$ a2 L0 z5 q5 l& R, B2 \) I
- {C1,C2,gm1,gm2}];1 h9 w7 p' q9 E# C
- {C1,C2,gm1,gm2}=Together[DesignOTA1[Q,W,c1,c2]];4 r% A; i9 ]/ S8 c' r
- PrintLabeledList[{C1,C2,gm1,gm2},{"C1","C2","gm1","gm2"}];* y) F9 \* P7 ~4 C E
- Simplify[H]
. K# r* M) y9 C/ L) q- G - h1=Together[H/.{Q 2.,W N[2*pi*10^6],) {* t- H5 w% [8 Y: h
- c1 10.*10^(-12),c2 10*10^(-12)}//N];7 s( `\" @\" P+ }* {/ s; t& j
- Print["gm1=",gm1/.{Q 2.,W N[2*pi*10^6],- h: A# |6 B+ m\" u# Z
- c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]+ d/ s% Z! F' n: y
- Print["gm2=",gm2/.{Q 2.,W N[2*pi*10^6],
/ y4 ^, K- P7 t$ j3 w6 s. r - c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]4 Q' p, ~$ U+ O( Z% ]; r, b8 A
- h=(Numerator[h1]/g)/(Simplify[Denominator[h1]/g])9 D9 G/ w) v5 Y3 C- x: Z
- PrintLabeledList[N[{Q,W (2*pi)}/.{Q 2.,W N[2*pi*10^6],
|& y# e+ i6 T - c1 10.*10^(-12),c2 10*10^(-12)}//N],{"Qp","fp(Hz)"}];
8 [: o9 T o, |7 z - Rexample=N[{c1*10^(12),c2*10^(12),gm1,gm2}/.{Q 2.,W N[2*pi*10^6],' K2 A3 V. t1 G/ V
- c1 10.*10^(-12),c2 10*10^(-12)}//N];$ L, W. J- m; x# {' `\" b: H* I4 o0 }
- PrintLabeledList[Rexample,{"C1(pF)","C2(pF)","gm1","gm2"}];$ b/ t3 `: U# D2 O2 l' Q( K3 v9 H
- Plot[{Abs[h]/.s I*2*pi*f*10^6},{f,0.01,8}
4 ?) t; T5 {6 U6 ?+ `4 D - ,PlotRange All. B a. h( _\" ^& v
- ,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* @& T4 ?" L$ Z/ g4 ]
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