T-section equivalent of a length-l transmission line segment
[Za,Zc] = tsection(Z0,bl)
line impedance
phase length in radians = beta*l = 2*pi*l/lambda
series impedance (Zb=Za)
shunt impedance
tsection(Z0,bl) designs T-section equivalent of a length-l transmission line segment. Za = Zb = j*Z0*tan(bl/2), Zc = -j*Z0/sin(bl). for a lossy line bl can also be complex, i.e., bl-j*al
----|-------------|----........----|--Za--|--Zb--|----
...........l.............==>............Zc
----|-------------|----........----|------|------|----
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