In article ,
says...
Am I reading the block diag correctly-- in that the contest winner does not
measure return parameters (S11 or S22) , but only through (S21, S12) the
DUT?
Davide's does return measurements.

That was my impression. You'd have to use an external directional
coupler to do reflectance measurements.

-- jm

------------------------------------------------------
http://www.qsl.net/ke5fx
Note: My E-mail address has been altered to avoid spam
------------------------------------------------------