gusucode.com > matlab编程遗传算法计算匹配电路源码程序 > code1/code/MATLAB源代码/test1.m

    function [ S21 ] = test1( Z2,EL2,Z3,EL3,Z4,EL4,FREQ_10GHz )
%UNTITLED 此处显示有关此函数的摘要
%   此处显示详细说明
EL2=EL2/360*2*pi*FREQ_10GHz/10;
EL3=EL3/360*2*pi*FREQ_10GHz/10;
EL4=EL4/360*2*pi*FREQ_10GHz/10;
A2=cos(EL2);
B2=1i*Z2*sin(EL2);
C2=1i*sin(EL2)/Z2;
D2=cos(EL2);
ABCD2=[A2 B2;C2 D2];
A3=cos(EL3);
B3=1i*Z3*sin(EL3);
C3=1i*sin(EL3)/Z3;
D3=cos(EL3);
ABCD3=[A3 B3;C3 D3];
A4=cos(EL4);
B4=1i*Z4*sin(EL4);
C4=1i*sin(EL4)/Z4;
D4=cos(EL4);
ABCD4=[A4 B4;C4 D4];
ABCD1=ABCD2*ABCD3*ABCD2;
Y11_1=ABCD1(2,2)/ABCD1(1,2);
Y12_1=-(ABCD1(1,1)*ABCD1(2,2)-ABCD1(1,2)*ABCD1(2,1))/ABCD1(1,2);
Y21_1=-1/ABCD1(1,2);
Y22_1=ABCD1(1,1)/ABCD1(1,2);
Y11_4=ABCD4(2,2)/ABCD4(1,2);
Y12_4=-(ABCD4(1,1)*ABCD4(2,2)-ABCD4(1,2)*ABCD4(2,1))/ABCD4(1,2);
Y21_4=-1/ABCD4(1,2);
Y22_4=ABCD4(1,1)/ABCD4(1,2);
Y11=Y11_1+Y11_4;
Y12=Y12_1+Y12_4;
Y21=Y21_1+Y21_4;
Y22=Y22_1+Y22_4;
delta_Y=(Y11+1/50)*(Y22+1/50)-Y12*Y21;
S21=20*log10(abs(-2*Y21/50/delta_Y));
end