SMW200A_specs_en_3606-8037-22_v2700.pdf - 第66页

Version 27.00, October 2024 66 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator Envelope tracking ( R&S ® SMW-K540 op tion) With this option , the analog I/Q outp uts can be used to generate an an alog…

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 65

Impulsive noise simulation

This function allows to add a pulsed AWGN signal to the wanted signal with settable number of pulses per frame and within settable

limits of randomly distributed pulse intervals.

Impulsive noise

AWGN signal data

see R&S

SMW-K62 option

C/I

Setting range

Depends on the set RF level.

The PEP of the sum signal (wanted signal

+ noise) must not exceed the maximum

possible PEP of the respective RF path.

–35 dB to +60 dB

Setting resolution

0.01 dB

Frame duration

0.1 ms to 1000.0 ms

Pulse duration

fixed

0.25 µs

Pulses per frame

1 to 40000

Minimum pulse interval

for pulses per frame > 1

Setting range

0.25 µs to 16 ms

Setting resolution

0.25 µs

Maximum pulse interval

for pulses per frame > 1

Setting range

0.25 µs to 16 ms

Setting resolution

0.25 µs

Distribution of pulse intervals

PRBS

Availability of phase noise and impulsive noise for different baseband configurations

Baseband main

module

Fading/baseband configuration

Phase noise

Impulsive noise

R&S

SMW-B13

standard

●

R&S

SMW-B13T

standard

●

advanced

up to 4 streams

–

●

more than 4 streams

–

R&S

SMW-B13XT

standard

●

advanced

up to 4 streams

●

more than 4 streams

●

Version 27.00, October 2024

66 Rohde & Schwarz R&S

SMW200A Vector Signal Generator

Envelope tracking (R&S

SMW-K540 option)

With this option, the analog I/Q outputs can be used to generate an analog signal corresponding to the envelope of the I/Q signal to

test envelope tracking modulators.

This option can be installed once if the instrument is equipped with the R&S

SMW-B13 or R&S

SMW-B13XT option. If the instrument

is equipped with the R&S

SMW-B13T option, envelope tracking can be used either on signal path A or B with one R&S

SMW-K540

option. For envelope tracking to be used on signal paths A and B simultaneously, two R&S

SMW-K540 and one R&S

SMW-B13T

must be installed.

Instruments equipped with the R&S

SMW-B13 or R&S

SMW-B13T option: For each R&S

SMW-K540 option to be installed, an

R&S

SMW-K16 option must be installed, and the instrument must be equipped with at least one standard baseband generator

(R&S

SMW-B10 option).

Instruments equipped with the R&S

SMW-B13XT option: For R&S

SMW-K540 option to be installed, the R&S

SMW-K17 option must

be installed, and the instrument must be equipped with at least one wideband baseband generator (R&S

SMW-B9 option).

General

Envelope voltage adaptation

auto normalized, auto power, manual

Output type

single-ended, differential

Bias voltage

see section Differential analog I/Q outputs or Wideband differential analog I/Q outputs

Offset voltage

see section Differential analog I/Q outputs or Wideband differential analog I/Q outputs

Envelope to RF delay

Setting range

–1 µs to +1 µs

Setting resolution

1 ps

Shaping

off, linear, from table, polynomial,

detroughing

Envelope voltage adaptation modes: auto normalized and auto power

Power amplifier input power P

Setting range

–145.00 dB to +30.00 dB

Setting resolution

0.01 dB

Power amplifier supply voltage V

= envelope voltage · DC modulator gain + V

CC, Offset

DC modulator gain

–20.00 dB to +20.00 dB

Power amplifier offset voltage V

CC,

Offset

0 V to 30 V

Envelope voltage adaptation mode: manual

Pregain

Setting range

–20.00 dB to 0.00 dB

Setting resolution

0.01 dB

Postgain

Setting range

–3.00 dB to +20.00 dB

Setting resolution

0.01 dB

Clipping level

upper and lower limit can be set

separately

0 % to 100 %

Maximum output voltage

see Output voltage in section Differential analog I/Q outputs

AM/AM, AM/PM predistortion (R&S

SMW-K541 option)

Instruments with wideband baseband (R&S

SMW-B13XT):

Each R&S

SMW-K541 option to be installed requires a wideband baseband generator (R&S

SMW-B9 option) and an RF path. If the

instrument is equipped with two baseband generators and two RF paths, predistortion can be used either on signal path A or B with

one R&S

SMW-K541 option. To allow AM/AM, AM/PM predistortion to be used on signal paths A and B simultaneously, two

R&S

SMW-K541 must be installed; furthermore, the instrument must be equipped with two R&S

SMW-B9 options and two RF paths,

i.e. an R&S

SMW-B2xx frequency option for path B must be installed.

Instruments with standard baseband (R&S

SMW-B13/-B13T):

Each R&S

SMW-K541 option to be installed requires a standard baseband generator (R&S

SMW-B10 option) and an RF path.

If the instrument is equipped with two baseband generators and two RF paths, predistortion can be used either on signal

path A or B with one R&S

SMW-K541 option. To allow AM/AM, AM/PM predistortion to be used on signal paths A and B

simultaneously, two R&S

SMW-K541 must be installed; furthermore, the instrument must be equipped with two R&S

SMW-B10

options, the R&S

SMW-B13T option and two RF paths, i.e. an R&S

SMW-B2xx frequency option for path B must be installed.

State

on/off

Maximum input power (PEP

max.)

Setting range

–145.00 dB to +30.00 dB

Setting resolution

0.01 dB

Shaping

polynomial, from table

Version 27.00, October 2024

Rohde & Schwarz R&S

SMW200A Vector Signal Generator 67

Digital Doherty (R&S

SMW-K546 option)

The Digital Doherty option only applies to instruments equipped with two RF paths and two baseband generators. Two

R&S

SMW-K541 options and the R&S

SMW-B90 option (phase coherence) must be installed as prerequisite.

State

on/off

Maximum input power (PEP

max.)

Setting range

–145.00 dB to +30.00 dB

Setting resolution

0.01 dB

Shaping

polynomial, from table, classic Doherty

User-defined frequency response correction (R&S

SMW-K544 option)

This option can be installed once if the instrument is equipped with the R&S

SMW-B13 option. If the instrument is equipped with the

R&S

SMW-B13T or R&S

SMW-B13XT option, user-defined frequency response correction can be used either on signal path A or B

with one R&S

SMW-K544 option. For user-defined frequency response correction to be used on signal paths A and B simultaneously,

two R&S

SMW-K544 must be installed.

State

on/off

Scattering parameters

File format

*.s<n>p (e.g. *.s2p)

Maximum number of points

16384

Number of cascadable datasets

up to 10

Additional frequency response

File format

*.fres, *.ucor

Number of files

up to 5

Absolute level correction at center

frequency

based on S-parameter data

on/off

Minimum compensation bandwidth

with R&S

SMW-B13/-B13T options

8 MHz

with R&S

SMW-B13XT option

100 MHz

Automated RF port alignment (R&S

SMW-K545 option)

Instruments with wideband baseband (R&S

SMW-B13XT):

For each installed RF path, R&S

SMW-B9, R&S

SMW-K61 and R&S

SMW-K544 must be installed as prerequisite. Furthermore, the

instrument must be equipped with the R&S

SMW-B90 option.

Instruments with standard baseband (R&S

SMW-B13/-B13T):

For each installed RF path, R&S

SMW-B10, R&S

SMW-K61 and R&S

SMW-K544 must be installed as prerequisite. Furthermore, the

instrument must be equipped with the R&S

SMW-B90 option.

The option cannot be installed if an R&S

SMW-B1044O, R&S

SMW-B2044O, R&S

SMW-B1056O or R&S

SMW-B1067O option

is installed.

To run this option a setup should be defined and generated using the R&S

RFPAL software. At least two signal paths should be

provided. In case of a setup with multiple instruments, an instrument is designated as primary instrument and should be used to

control the option.

State

on/off

Align

aligned, not aligned

Setup file

setup file including alignment data is

generated by R&S

RFPAL

*.rfsa

Additional S-parameter files

File format

*.s<n>p (e.g. *.s2p)

Maximum number of points

16384

Number of cascadable datasets

recommended ≤ 2

up to 10