Atec Agilent-34980A User Manual

Page 13

34980A RF and microwave
switch modules

The 34980A offers a variety of RF

and microwave switch modules—
RF multiplexers, SPDT switching
from DC to 20 GHz, or a switch/
attenuator driver module that allows
you to control switches or attenuators
external to the 34980A mainframe.

34941A/42A—from DC to 3 GHz—
The RF switch modules can be used
to switch signals from DC to 3 GHz
and above. This can be useful for
switching signals between oscillo-
scopes, spectrum analyzers, network
analyzers, and other RF test
equipment.

Choose from the following features:

• 50- or 75- ohm Quad 4-channel

multiplexers

• DC to 3 GHz

• 30 V, 0.5 A, 10 W

The 34941A and 34942A are
configured as four independent 1x4
RF multiplexers on a single module.
Multiple banks can be connected
together to create a larger multiplexer
—up to 97 RF multiplexer channels in
a single 34980A mainframe. To pre-
vent ground loops, individual multi-

plexers are isolated from each other
and from the mainframe’s chassis.
However, the multiplexer channels
can be chassis grounded with a simple
change. Both 50-ohm and 75-ohm
versions are available.

For typical switch performance
graphs, contact factory.

34946A/47A—from DC to 20 GHz—
For applications where you need only
a few high-frequency switches, the
34946A and 34947A offer single-pole,
double-throw switches in either 4-GHz
or 20-GHz options. These modules
internally mount two or three inde-
pendent Agilent N1810 series coaxial
switches. These switches are well
known for their excellent insertion
loss, isolation and VSWR specifications.
Switch read back capabilities allow
you to query the position of the
switch. You can choose higher density
with the unterminated switches, or
select the terminated switches to
maintain impedance match.

Figure 7. 34941A Quad 1x4 50 ohm 2 GHz multiplexer

3494xA

COM

Figure 8. 34946A dual 1x2 SPDT terminated microwave switch

101

102

COM

201

202

COM

34946A

Dual 1x2 SPOT Terminated Microwave Switch