Specifications
However, you may need
to rapidly deploy custom
RF/Microwave Switch solutions
for your testing needs, so you
need to be in control of lead
times and costs associated
with those switch solutions.
In other words, you are a
Do-It-Yourselfer.
This application note will
focus mainly on helping the
Do-It-Yourself engineer who
needs to control discrete
external switches/attenuators.
You will learn how the 34945A/
L4445A Switch Driver, in
combination with Agilent’s
most popular switches and
attenuators, provides the best
off-the-shelf RF/Microwave
Switch solution to speed your
test system integration and
to control costs.
Overview of 34980A
RF/Microwave Modules
RF and Microwave switches
find use in a wide variety
of applications that range
from 30 MHz to over 20 GHz:
• Wireless Communications
• Broadband CATV
• Communication Satellites
• Test and Measurement
Equipment
• Electronic Radar
and Defense Systems
• Avionics
• Medical Electronics
• Space Programs
High Frequency measurement
systems can be configured to
route RF/microwave signals
in a variety of configurations:
• Selection from multiple signal
sources to a single output
• Selection of multiple
input signals to a single
measurement instrument
• Transfer switching to insert
or remove a device
in a signal path
• Matrix switching
of multiple
inputs and outputs
For many test system applica-
tions, the 34980A’s RF and
Microwave modules provide
the convenience, functionality,
and performance needed to
switch signals between the DUT
and oscilloscopes, spectrum
analyzers, network analyzers,
and other test equipment. The
modules are positioned in the
34980A’s 8-slot mainframe, and
flexible or semi-flexible coax
cable is routed between the
DUT fixture, mainframe switch
modules, and test instruments.
The 34980A provides four RF
and Microwave modules:
• 34941A – Quad 1x4, SMA,
DC to 3 GHz, 50 ohm
unterminated
• 34942A – Quad 1x4,
mini SMB, DC to 1.5 GHz,
75 ohm unterminated
• 34946A – 2 SPDT, SMA,
DC to 4 GHz (or 20 GHz),
50 ohm terminated
• 34947A – 3 SPDT, SMA,
DC to 4 GHz (or 20 GHz),
unterminated
3
Mini-
SMB
SMA