
34-21Microwave Measurement
isolation should be performed. For this purpose, both ports are terminated by their characteristic
im
pedances
an
d
a tr
ansmission
me
asurement
is pe
rformed
. i
s
me
asurement
de
termines
th
e
va
lues
of C
F
and C
R
in the calibration ow diagram (see Figure 34.14).
An
other
po
ssibility
fo
r
pe
rforming
ve
ctor
ne
twork
me
asurement
is ba
sed
on mu
ltiport
re
ectom-
eters [45]. e advantage of such systems is the reduced complexity of the network analyzer receiver. A
possible realization of a reectometer structure is the so-called six-port reectometer. e reectometer
co
nsists
of th
ree
co
uplers
an
d
fo
ur
po
wer
se
nsors
. No fr
equency