S-parameter toolbox (+ Z, Y, H, G, ABCD, T): z2s(z); - File Exchange

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S-parameter toolbox (+ Z, Y, H, G, ABCD, T)

SXPParse(DataFileName, fid_lo...
SXPWrite(freq, s, FileName, u... SXPWrite(FREQ, S, FileName, FREQ_UNIT, COMMENT)
a2g(A);
a2h(A);
a2s(a)
a2s4(A);
a2y(A);
a2z(A);
g2a(g);
g2h(g, epsilon)
g2s(g, epsilon);
g2y(g)
g2z(g);
h2a(h);
h2g(h, epsilon, WordToReport)
h2s(h);
h2y(h)
h2z(h);
s2a(S);
s2a4(S);
s2g(s, epsilon);
s2h(s, epsilon);
s2t(s);
s2t(s, epsilon);
s2y(s);
s2y4(S);
s2z(s);
s2z4(S);
t2s(t, epsilon);
t2s4(t);
y2a(y);
y2g(y)
y2h(y)
y2s(y)
y2s4(y);
z2a(z,epsilon);
z2g(z);
z2h(z);
z2s(z);
z2s4(z);
Contents.m
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from S-parameter toolbox (+ Z, Y, H, G, ABCD, T) by tudor dima
Convert between N-port representations of RF circuits. Read / Write industry-standard files.

z2s(z);

function s = z2s(z);

% S = z2s(Z)
%
% Impedance to Scattering transformation
% S, Z are matrices of size [P,P,F], 
% where P is the number of ports, F the number of frequencies
%
% s = inv(z+I) * (z-I)

I = diag(ones(1, size(z,2)));

for i=1:size(z,3)
    s(:,:,i) = inv(z(:,:,i)+I) * (z(:,:,i)-I) ;
end;

Highlights from S-parameter toolbox (+ Z, Y, H, G, ABCD, T)

Highlights from
S-parameter toolbox (+ Z, Y, H, G, ABCD, T)