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7-6 IF Up-Conversion
(Option 7)
Option 7 adds an internal mixer that can be used for the generic
up-conversion of an IF signal. The mixer’s RF, LO, and IF ports are
made available at the rear panel of the MG369XB via three female
K-Connectors. The typical application will feed the MG369XB micro
-
wave output, which can be moved to the rear panel via Option 9K, to
the mixer’s LO port. The user’s external IF signal will be fed to the
mixer’s IF port. The new up-converted signal will be available at the
mixer’s RF port. Figure 7-5 shows a block diagram of a QPSK up-con
-
version using the MG369XB with an MG3681A QPSK source.
Use With Other Instruments IF Up-Conversion (Option 7)
MG369XB OM 7-19
MG3681A
QPSK Source
IF
LO
RF
2-40 GHz
Up-converted QPSK
signal in transmission
channel.
MG369XB
RF Output
Figure 7-5. QPSK Up-conversion