www.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/lowpassS21.m
function S21 = lowpassS21(Chrom) %UNTITLED 此处显示有关此函数的摘要 % 此处显示详细说明 [RowLocation,ColumnLocation]=find(Chrom>1000); num=size(RowLocation); ChromCopy=Chrom; for k=1:num ChromCopy(RowLocation(k),ColumnLocation(k))=(ChromCopy(RowLocation(k),ColumnLocation(k))-1000)/10; end [RowLocation,ColumnLocation]=find(Chrom==0); num=size(RowLocation); for k=1:num ChromCopy(RowLocation(k),ColumnLocation(k))=0.9; end [m,n]=size(ChromCopy); ABCD=zeros(2,2,m); for k=1:m ABCD(:,:,k)=[1 0;2*pi*1e-4*ChromCopy(k,1)*1i 1]*[1 0.2*pi*ChromCopy(k,2)*1i;0 1]*... [1 0;2*pi*1e-4*ChromCopy(k,3)*1i 1]*[1 0.2*pi*ChromCopy(k,4)*1i;0 1]*[1 0;2*pi*1e-4*ChromCopy(k,5)*1i 1]; end S21=-20*log10(abs(2./(squeeze(ABCD(1,1,:))+squeeze(ABCD(1,2,:))/50+squeeze(ABCD(2,1,:))*50+squeeze(ABCD(2,2,:))))); end