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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 - ^+ F0 Z4 h7 I) |0 R$ y }5 B( A
- CircuitEquations={Ii (1+gm1/s/c1+gm1*gm2/s/c1/s/c2)Ig,
' M$ b( x6 p0 D( [2 Q% p - Io (gm1*gm2/s/c1/s/c2)*Ig};8 v# P! r) ?; U8 A& w0 w1 m6 V
- Current={Ii,Io};
- l1 O* A+ t) [* ?\" F - CircuitRespones=Together[Flatten[Solve[CircuitEquations,Current]]];
% I2 ?5 ~; ?5 u* F/ t! m) ^ - H=Io/Ii/.CircuitRespones//Together//Simplify;5 T- v& [9 M$ M' t' @3 A3 }. Y\" M
- Print["H(S)=",H]
- n9 t\" I* ?- j9 X8 i1 [5 p. n+ q2 m/ s3 h - PoleQpole[H,s]:=Module[{den,fp,Qp},
1 u7 D) g# r# g6 F - den=Denominator[H];
8 T0 |* G5 L/ M6 B: c2 x3 p - fp=Sqrt[Coefficient[den,s,0]/Coefficient[den,s,2]]/(2 pi);
7 [' k. o! U6 _0 E6 R; m$ { - Qp=1/(Coefficient[den,s,1]/Coefficient[den,s,2]/(2pi fp));
; a4 K1 M! s' s! Q4 F, t - Simplify[{fp,Qp}]];5 \3 o9 U' J9 W% b& \7 M
- ZeroQzero[H,s]:=Module[{fz,num,Qz0},9 L* V2 ]6 L% v/ l, h
- num=Numerator[H];
* p: D$ X3 @% J\" `; T9 d - Qz0=(Coefficient[num,s,2]/Coefficient[num,s,1]);0 s5 v+ E2 z0 |0 y
- fz=Sqrt[Coefficient[num,s,0]/Coefficient[num,s,2]]/(2 pi);$ T7 P- v7 F0 B5 I) T' @; e
- Simplify[{fz,Qz0 fz}]];
. t* _* D$ G) M6 l - {fp,Qp}=Simplify[PoleQpole[H,s]];
4 i3 M1 f/ _8 Z5 k; _( A5 w - Klp=H/.s 0;
% G5 W& J: q' m1 A6 Z( `+ h' m0 a - PrintLabeledList[{fp,Qp},{"fp","Qp"}];
/ y7 x7 `# \0 O4 h; X5 U - DesignOTA1[Qp_,Wp_,C1_,C2_]:=Module[{gm1,gm2},- a5 ?$ U3 I) n2 d. W3 g9 `* O% |
- gm1=C1*Wp/Qp;
* i* T9 K' L) v; J - gm2=C2*Wp*Qp;, }$ z# b( q0 H' o
- {C1,C2,gm1,gm2}];2 j\" z. @1 W* A# B/ i* b9 \
- {C1,C2,gm1,gm2}=Together[DesignOTA1[Q,W,c1,c2]];; w. G! o6 s8 V! J& f/ G
- PrintLabeledList[{C1,C2,gm1,gm2},{"C1","C2","gm1","gm2"}];
7 M$ r& n# | F - Simplify[H]
8 {; Y- m7 p, z - h1=Together[H/.{Q 2.,W N[2*pi*10^6],
# }. W+ _5 }7 O - c1 10.*10^(-12),c2 10*10^(-12)}//N];
$ q; o }5 y\" H% d0 U* s: `0 z4 P - Print["gm1=",gm1/.{Q 2.,W N[2*pi*10^6],
g1 n0 J\" P9 m% _) |* i; a - c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]+ Q& U' ]/ W' \# b* s
- Print["gm2=",gm2/.{Q 2.,W N[2*pi*10^6],, |; Q/ p* a6 w# s# r! R
- c1 10.*10^(-12),c2 10*10^(-12)}//N,"mS"]
+ _4 N* a$ n, X( p& I - h=(Numerator[h1]/g)/(Simplify[Denominator[h1]/g])
8 I7 G- {9 l E6 [ - PrintLabeledList[N[{Q,W (2*pi)}/.{Q 2.,W N[2*pi*10^6],
: `: y/ f7 z2 [9 u - c1 10.*10^(-12),c2 10*10^(-12)}//N],{"Qp","fp(Hz)"}];
6 x. H, X1 m' t: e2 w - Rexample=N[{c1*10^(12),c2*10^(12),gm1,gm2}/.{Q 2.,W N[2*pi*10^6],
5 Z) }' m* F, O2 L - c1 10.*10^(-12),c2 10*10^(-12)}//N];
7 L$ L$ a2 ^6 c8 k1 W! s - PrintLabeledList[Rexample,{"C1(pF)","C2(pF)","gm1","gm2"}];
- _\" Q7 H8 W6 V! [) Y - Plot[{Abs[h]/.s I*2*pi*f*10^6},{f,0.01,8}4 B% M& q6 _4 a k+ o- Z
- ,PlotRange All
# B$ b7 O$ r w5 T6 H0 ^ - ,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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