Atec Rohde-Schwarz-SMP Series - Manual (Page 3)

Microwave Signal Generator SMP 3
Intelligent menu guidance for
maximum ease of operation
◆
Large-size LC display
◆
Menu-guided operation with all menu
levels being shown at a glance
◆
Two menu memories to speed up
operation
User-friendly details
◆ Digital RF, AF and level sweep
◆
Storage of 50 complete instrument
setups
◆ Combination of any modulation
modes possible
◆
Ultra-low RF leakage
◆ RF control output
Unambiguous results due to high
spectral purity
The outstanding features of the SMP are
the extremely low SSB phase noise of
<–105 dBc/Hz at 10 GHz (10 kHz from
carrier) as well as nonharmonics of
<–60/54 dBc up to/above 20 GHz. The
high harmonics rejection and the com-
plete absence of subharmonics below
20 GHz cut out time-wasting measure-
ments such as occur with inferior signal
generators.
Minimum level error
A highly precise level is required, for
example, for measurements and calibra-
tion of receivers. A controlled and fre-
quency-response-compensated output
level is a basic prerequisite for setting
accuracy. In conjunction with a precision
attenuator (option SMP-B15/-B17), an
extremely high level accuracy is ensured
throughout the setting range (<±0.9 dB
at 0 dBm in the frequency range 10 MHz
to 40 GHz).
Stable output frequency
The crystal reference built-in as standard
ensures an accurate and low-drift output
frequency.
The SMP can also be fitted with an oven-
controlled crystal oscillator (option
SMP-B1, OCXO) to meet the most exact-
ing requirements.
High output level eliminates
the need for add-on units
A large number of microwave measure-
ments requires mainly one thing: a high
output level, which until now has only
been possible with expensive add-on
amplifiers.
Thanks to their high output levels, the
SMP models feature sufficient reserves
for compensating the attenuation of long
cables as well as the losses of power
splitters and directional couplers.
The SMP22 achieves a level of up to
29 dBm at 2 GHz and an excellent value of
23 dBm at 20 GHz.
Our standard:
0.1 Hz frequency resolution
A high frequency resolution is required
especially for scientific applications and
in industrial research, e.g. for surface
measurements of materials using radar
equipment.
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
dBc
2 4 6 8 2 4 6 8 2 4 6 8 2 4 6 8 2 4 6 8
10 Hz 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz
30 dBm
28 dBm
26 dBm
24 dBm
22 dBm
20 dBm
18 dBm
16 dBm
14 dBm
12 dBm
10 dBm
8 dBm
0.01 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 GHz
SMP 22
SMP 02 SMP 03
SMP 04
FIG 1: SSB phase noise at 10 GHz
FIG 2: Typical maximum level versus frequency