Atec Rohde-Schwarz-SMF100A - Manual (Page 5)

–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
1 10 100 1k 10k 100k 1M 10M
22 GHz
1 GHz
3 GHz
10 GHz
40 GHz
Offset frequency in Hz
SSB phase noise in dBc (1 Hz measurement bandwidth)
¸SMF100A Microwave Signal Generator 5
Single sideband phase noise for various frequencies with the R&S®SMF-B22 enhanced phase noise performance option
if you do not have a high-quality pulse
generator for testing. However, the
internal pulse generator can also be
used by itself in external applications via
designated outputs.
One new optional feature of the built-
in pulse generator is the alternative to
generate "pulse trains" (¸SMF-K27
option), which are commonly used for ra-
dar applications. An example of a pulse
train is shown in the figure on the right.
In contrast to single or double pulses,
"pulse trains" are a combination of dif-
ferent pulses, which can be a periodical
or non-periodical set of pulses.
Highly stable output frequency
The integrated reference oscillator
included as standard keeps the output
frequency precise and low in drift. To
meet the highest of requirements in
precision and aging, you can add the
¸SMF-B1 OCXO reference oscillator
option to the ¸SMF100A.
Excellent signal quality
Due to an innovative synthesizer con-
cept, the ¸SMF100A offers excellent
values in terms of SSB phase noise,
wideband noise, and non harmonics sup-
pression. It is the ideal solution for all
measurement applications in which the
very high spectral purity of typ. –120 dBc
(10 GHz; 10 kHz carrier offset; 1 Hz mea-
surement bandwidth) is needed. For ex-
ample, it can be used in communications
systems as an IF or LO substitute for
adjacent channel or phase noise mea- surements or in low-noise radar as an
ultra-pure signal source.
The ¸SMF100A offers this out-
standing signal quality because it
includes an integrated reference
oscillator as standard. You can improve
this quality even further very near the
carrier by adding the ¸SMF-B22
enhanced phase noise option.
RF signal
Time
T
1
T
2
T
3
T
n
t
1
t
2
t
n-1
Pulse train: combination of pulses with different pulse widths and pauses
SMF_bro_en_5213-7660-12_v0201.indd 5 13.02.2009 15:43:54