Hello Alessandro,
You can use the cascadesparams() function. By default, cascadesparams cascades two port networks (or 2N-port networks), but can also be used to generically connect networks together. For the whole documentation, see:
doc cascadesparams
Here's a few examples to get you started:
(1) If your data is in files, let's assume the two-port data is in 'foo.s2p' and the one-port data is in 'bar.s1p'. Do the following:
S2 = sparameters('foo.s2p');
S1 = sparameters('bar.s1p');
Sfinal = cascadesparams(S2,S1,1);
It is important to note that, for this to work, the frequencies and impedances in the s2p file must match those in the s1p file. If you would like to visualize the resulting S11 data:
rfplot(Sfinal,1,1)
If you would like to access the numeric values of the S11 data:
s11 = rfparam(Sfinal,1,1);
(2) If your data is in variables, let's assume your two-port data is stored in a 2x2xK variable named data2, and your one-port data is stored in a 1x1xK variable named data1. Then:
datafinal = cascadesparams(data2,data1,1);
I hope this helps!
Joe
