hi
i'm randy becker with keysight
technologies in the wireless industry
the end users are continuing to ask
for ever increasing throughput and lower
latencies for a wide range of different
applications
you as the providers of the
infrastructure equipment and also the
mobile handsets
are continuing to ask keysight for three
key things higher frequency coverage
uh wider bandwidths and the absolute
best evm performance possible
to enable you to get your products to
market first in this video i'm going to
show you how keysight is addressing
those challenges
through a series of short demonstrations
so let's take a look
at our demo setup today in this setup we
have our vxg
vector microwave signal generator
frequency coverage up to 44 gigahertz it
has two channels
and really wide bandwidth capability
that i'll show you just a minute
on the top we have our uxa the newest
member of the uxa family
it has frequency coverage up to 50
gigahertz it has an internal
demodulation capability up to four
gigahertz
and the frequency range can be extended
further all the way to 110 gigahertz
with this external remote head it's
portable
small compact you can position it right
at the device under test
and this connector allows you to measure
basically from dc
all the way to 110 gigahertz
lastly we have a new rcal module which
also goes to 110 gigahertz and allows
you to
recalibrate from the front panel of the
instrument or the remote head
right to your device under test so this
is a handy
instrument to have as well now let's
take a look at our first measurement
which is going to be an evm measurement
of a new radio signal
so let's take a look at the evm
measurement you can see
i'm using signal studio on the source to
generate our
new radio signal i'm using a
100 megahertz component carrier
configured for test model
3.1 and i'm doing this at a frequency of
28 gigahertz and a power level of -5 db
now we're going to look at the results
on the uxa using our vector signal
analysis software
on the screen right away you can see on
the bottom the
spectrum showing the 100 megahertz
component carrier and that looks pretty
flat
you can also see the constellation
diagram which is 64 qam
if you go all the way to the far right
you can see a breakdown of
all the different channels and their evm
power level
among other things you can also get a
nice composite summary of the overall
evm in the upper right
quadrant and that has an evm right
around 0.7
so that's a pretty good result on the
screen
i'm going to compare the previous
generation uxa
with the newest member of the uxa family
and what
you can see is that the evm floor has
dropped a couple of db
and we've also extended the
range with which you can make those
really good evm measurements so now
you're able to make really good evm
measurements
even at the lowest uh power levels
in the next demo i'm going to show you
how we can make really wide bandwidth
measurements using both the source
and the analyzer in this next
measurement i'm going to show you how we
can generate
and analyze up to four gigahertz of
bandwidth
and i've set the generator here to 28
gigahertz again
at a power level of plus 20 dbm which is
a phenomenally high power level
uh at these frequencies now let's take a
look at the demodulation results
on the bottom lower left you can see the
span is 4 gigahertz and i'm literally
filling up that entire
spectrum you can see here you can see
the constellation diagram
nice tight and clean 16 clam
and the evm that we're getting is right
at two percent so that's a phenomenal
result
under these conditions and we're making
use of the wide bandwidth
capability in the next generation uxa
in this final measurement i'm going to
show the ability to make low-level
spurious measurements which are required
for some communication formats
i already have the analyzer set to sweep
from zero
all the way to 110 gigahertz you can see
the span is actually 110
gigahertz here and i'm going to use the
signal we used
in the previous measurement which was
set at 28 gigahertz at a power level of
plus 20 dbm
when i get the cable close to the input
of the remote head
you can see immediately that we are
registering a response on the analyzer
so in fact we can pick up that
low level signal after it's leaking
across the air
so another important measurement that
you can do with the uxa
in summary we've looked at three key
performance attributes that customers
ask us for all the time
higher frequencies wider bandwidths and
the absolute best evm performance
these will help you unlock your next
measurement insight and get your
products to market first
thanks for watching