SMW200A_specs_en_3606-8037-22_v2700.pdf - 第40页
Version 27.00, October 2024 40 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator Analog I/Q inputs For each installed RF path A or B , one pair of I and Q inputs is available on the front panel (single-end …
Version 27.00, October 2024
Rohde & Schwarz R&S
®
SMW200A Vector Signal Generator 39
Measured RF modulation frequency response (phase) with internal baseband I/Q, wideband baseband
-30.0
-20.0
-10.0
0.0
10.0
20.0
30.0
-1000 -800 -600 -400 -200 0 200 400 600 800 1000
Frequency response (phase) /
°
Offset frequency / MHz
5 GHz
15 GHz
18 GHz
28 GHz
35 GHz
48 GHz
64 GHz
Version 27.00, October 2024
40 Rohde & Schwarz R&S
®
SMW200A Vector Signal Generator
Analog I/Q inputs
For each installed RF path A or B, one pair of I and Q inputs is available on the front panel (single-ended input mode). With the
R&S
®
SMW-K739 option installed, the input mode for RF path A can also be switched to differential. In this mode, all four available
connectors are used for RF path A.
Analog I/Q input signals are directly applied to the analog I/Q modulation circuit and are not routed through the baseband section of
the R&S
®
SMW200A.
Analog I/Q inputs are not available if an R&S
®
SMW-B1044O, R&S
®
SMW-B2044O, R&S
®
SMW-B1056O or R&S
®
SMW-B1067O option
is installed.
Input mode
single-ended
with R&S
®
SMW-K739 option, for RF path A
R&S
®
SMW-B1003, R&S
®
SMW-B1006,
R&S
®
SMW-B1007, R&S
®
SMW-B1012,
R&S
®
SMW-B1020, R&S
®
SMW-B1044,
R&S
®
SMW-B1044N
single-ended or differential
R&S
®
SMW-B1031, R&S
®
SMW-B1040, R&S
®
SMW-B1040N
f ≤ 20 GHz
single-ended or differential
f > 20 GHz
single-ended
Connector types
I, Q on front panel (for each installed
RF path A or B)
BNC female
Input impedance
50 Ω (nom.)
VSWR
with R&S
®
SMW-B1003, R&S
®
SMW-B2003, R&S
®
SMW-B1006, R&S
®
SMW-B2006,
R&S
®
SMW-B1007, R&S
®
SMW-B2007, R&S
®
SMW-B1012, R&S
®
SMW-B2012,
R&S
®
SMW-B1020, R&S
®
SMW-B2020 frequency options
up to 200 MHz
< 1.2 (typ.)
200 MHz to 500 MHz
< 1.35 (typ.)
500 MHz to 1 GHz
< 1.45 (typ.)
with R&S
®
SMW-B1031, R&S
®
SMW-B2031, R&S
®
SMW-B1040, R&S
®
SMW-B1044,
R&S
®
SMW-B2044, R&S
®
SMW-B1056, R&S
®
SMW-B1067 frequency options
up to 200 MHz, f ≤ 20 GHz
< 1.2 (typ.)
up to 200 MHz, f > 20 GHz
< 1.35 (typ.)
200 MHz to 500 MHz
< 1.35 (typ.)
500 MHz to 1 GHz
< 1.5 (typ.)
with R&S
®
SMW-B1040N, R&S
®
SMW-B1044N, R&S
®
SMW-B2044N,
R&S
®
SMW-B1056N, R&S
®
SMW-B1067N frequency options
up to 200 MHz, f ≤ 20 GHz
< 1.2 (typ.)
200 MHz to 500 MHz, f ≤ 20 GHz
< 1.35 (typ.)
500 MHz to 1 GHz, f ≤ 20 GHz
< 1.5 (typ.)
up to 275 MHz, f > 20 GHz
< 1.35 (typ.)
Nominal input voltage for full-scale input
Damage voltage
±2 V
q
22
i
+ = 0.5 V
VV
Version 27.00, October 2024
Rohde & Schwarz R&S
®
SMW200A Vector Signal Generator 41
Standard baseband characteristics
Standard baseband is not available for instruments equipped with R&S
®
SMW-B1044O, R&S
®
SMW-B2044O, R&S
®
SMW-B1056O or
R&S
®
SMW-B1067O frequency options.
Internal baseband characteristics
(R&S
®
SMW-B13 or R&S
®
SMW-B13T option)
The R&S
®
SMW-B13 option provides one I/Q path to the RF section (to RF path A) as well as one analog I/Q output (i.e. one I and one
Q output connector). The R&S
®
SMW-B13T option provides two I/Q paths to the RF section (if two RF paths are installed) as well as
two analog I/Q outputs. With two RF paths, R&S
®
SMW-B13T is required.
Either R&S
®
SMW-B13 or R&S
®
SMW-B13T must be installed on the instrument.
R&S
®
SMW-B13 and R&S
®
SMW-B13T cannot be installed in instruments equipped with R&S
®
SMW-B1044O, R&S
®
SMW-B2044O,
R&S
®
SMW-B1056O or R&S
®
SMW-B1067O frequency options.
D/A converter
Data rate
200 MHz
Resolution
16 bit
Sample rate
800 MHz (internal interpolation · 4)
Aliasing filter
with amplitude, group delay and S
i
correction
Bandwidth, rolloff to –0.1 dB
80 MHz
SFDR (excluding harmonics)
up to 10 MHz
< –80 dBc
up to 80 MHz
< –73 dBc
I/Q impairments (digital baseband)
These impairments are set in the digital baseband section of the R&S
®
SMW200A. They
act on the I/Q signal sent to the I/Q modulator/RF section, as well as on the I/Q signals
at the analog or digital I/Q outputs (of the respective path).
Carrier leakage
Setting range
–10 % to +10 %
Setting resolution
0.01 %
I Q (imbalance)
Setting range
–1 dB to +1 dB
Setting resolution
0.001 dB
Quadrature offset
Setting range
–10° to +10°
Setting resolution
0.01°
Analog I/Q outputs (R&S
®
SMW-B13 or R&S
®
SMW-B13T option)
Number of I/Q outputs
with R&S
®
SMW-B13 option
1
with R&S
®
SMW-B13T option
2
Output impedance
50 Ω
Output voltage
EMF (output voltage depends on set
modulation signal)
1 V (V
p
)
Offset
EMF
< 1 mV
Frequency response
9
at R
L
= 50 Ω
Magnitude
up to 10 MHz
0.02 dB (meas.)
up to 80 MHz
0.03 dB (meas.)
I/Q balance
10
at R
L
= 50 Ω
Magnitude
up to 10 MHz
0.01 dB (meas.)
up to 80 MHz
0.02 dB (meas.)
Spectral purity
at R
L
= 50 Ω
SFDR (sine wave)
up to 2 MHz
> 70 dB
up to 20 MHz
60 dB (meas.)
Wideband noise
10 MHz sine wave at 1 MHz offset
–155 dBc (typ.)
9
"Optimize internal I/Q impairments for RF output" switched off.
10
Value applies after 1 hour warm-up time and recalibration for 4 hours of operation and temperature variations of less than +5 °C.