R&S®FSWP Phase noise analyzer and VCO tester

High‑end analysis of signal sources and components

R&S®FSWP Phase noise analyzer and VCO tester
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R&S®FSWP Phase noise analyzer and VCO tester
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R&S®FSWP Phase noise analyzer and VCO tester
Open Lightbox
R&S®FSWP Phase noise analyzer and VCO tester
Open Lightbox
R&S®FSWP Phase noise analyzer and VCO tester
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R&S®FSWP phase noise analyzer and VCO tester, front low R&S®FSWP phase noise analyzer and VCO tester, front high R&S®FSWP phase noise analyzer and VCO tester, back high R&S®FSWP phase noise analyzer and VCO tester, hero view R&S®FSWP phase noise analyzer and VCO tester, application image

Key facts

  • High end signal and spectrum analyzer and phase noise tester in one box
  • Cross correlation for very sensitivity of high amplitude and phase noise measurement in parallel, even on pulsed signals
  • Frequency range from 1 MHz up to 50 GHz, 325 GHz with external mixers
  • Internal source for measuring residual phase noise on pulsed signals
  • SCPI recorder to simplify code generation

Unrivaled low phase noise

The R&S®FSWP phase noise analyzer and VCO tester is very sensitive thanks to extremely low-noise internal sources and cross-correlation. It can measure phase noise and amplitude noise in mere seconds on highly stable sources such as those in radar applications. Additional options such as pulsed signal measurements, residual phase noise (including pulsed) characterization and integrated high‑end signal and spectrum analysis make the R&S®FSWP a unique test instrument.

Features & benefits

Fastest measurement speed

Save time and multiply measurement throughput

The internal R&S®FSWP sources enable measurement of highly sensitive oscillators such as DROs and OCXOs with a minimum number of cross correlations, saving considerable time. Adding hardware accelerated signal processing to the R&S®FSWP phase noise analyzer enables real-time phase noise measurements. Short measurement time is key since it speeds up the development to manufacturing process while increasing production throughput.

Phase noise measurement
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Phase noise measurement

Phase measurement of a high-end OCXO using cross-correlation.

Unrivaled sensitivity

Highest sensitivity for phase and amplitude noise measurement

The R&S®FSWP internal local oscillator surpasses phase-noise performance of almost any signal generator available on the market. Thanks to the internal low‑noise analyzer sources, just a few correlations are needed to measure a high-quality oscillator. This allows for the fastest possible measurement times.

Phase noise and sensitivity
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Phase noise and sensitivity

The results can be displayed in separate windows or together in one window.

Highest flexibility

High-end phase noise analyzer and signal and spectrum analyzer in a single box

Users can examine the spectrum and demodulate the signal to measure EVM or pulse characteristics in different measurement channels. Designers of automatic test systems save space and money since they do not have to purchase an additional spectrum analyzer or vector signal analyzer. The R&S®FSWP is a future-proof investment. It is based on the high-end R&S®FSW with its unique RF performance and high sensitivity.

The R&S®FSWP does it all
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The R&S®FSWP does it all

Vector signal analysis, pulsed signal analysis, measurement of higher harmonics, sensitive phase noise measurements, etc.

Phase noise of pulsed signals

Easy analysis of pulsed signal sources

Measuring the phase noise of pulsed sources used in radar applications has never been easier. The R&S®FSWP captures the signal and calculates all pulse parameters instantaneously. It offers cross‑correlation for phase noise tests and automatically determines the trigger/gating parameters required for pulsed source measurements. Gating enables the R&S®FSWP to achieve a larger dynamic range for pulsed phase noise measurements compared to other methods.

Pulsed signal analysis
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Pulsed signal analysis

Automated measurement of pulse parameters in the time domain and phase noise in the frequency domain.

Residual/additive phase noise measurements

Residual PN measurements on pulsed and CW signals

For high‑end radar applications, knowing the additional phase noise added by individual components (e.g. amplifiers) to the signal path is crucial, since these influence pulse-to-pulse phase stability. The components have to be tested using pulsed signals under real-world conditions. The R&S®FSWP has an internal signal source for measuring residual phase noise or pulse-to-pulse phase stability and it also provides  additional inputs for other external sources.

Pulse-to-pulse phase stability
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Pulse-to-pulse phase stability

3D plot of pulse-to-pulse phase stability of several bursts.

VCO characterization made easy

Measure VCO parameters automatically

The R&S®FSWP features extremely low‑noise internal DC sources to supply and control voltage-controlled oscillators (VCO). The R&S®FSWP measures not only the fundamental voltage but also the power of the higher VCO harmonics relative to the tuning voltage. It also displays phase noise at various offset frequencies relative to the tuning voltage.

VCO results
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VCO results

Frequency, output power, tuning slope and current consumption vs. tuning voltage.

Transient analysis

Frequency and phase measurements in the time domain

The R&S®FSWP offers up to 8 GHz bandwidth for analyzing frequency or phase characteristics versus time. The R&S®FSWP also offers narrowband analysis down to 40 MHz to examine the transient response of PLLs in detail.

Transient analysis
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Transient analysis

Persistence display of synthesizer frequency settlings.

Amplitude and phase noise in parallel

Simultaneous measurement of amplitude noise and phase noise

The R&S®FSWP allows concurrent measurement of amplitude and phase noise up to a frequency offset of 30 MHz. It displays both results simultaneously in a single window or in separate windows.

Amplitude and phase noise
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Amplitude and phase noise

The grey area represents the improved sensitivity by cross-correlation, the yellow trace is the PN and the green one the AM noise.

Allan variance

Allan variance calculation from close-in phase noise 

To characterize oscillator frequency stability, the R&S®FSWP calculates the Allan variance from the phase noise and displays it for up to 1 million seconds (minimum offset: 1 μHz). Unlike the time domain methods, this makes it easy to suppress undesired side effects that appear as spurious emissions in the phase noise spectrum. Even short-term disturbances due to the phase noise from internal sources can be easily suppressed with cross-correlation.

Allan variance and phase noise
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Allan variance and phase noise

Calculation of the Allan variance from 33 ns to 10 s based on the phase noise measurement for an offset range of 0.1 Hz to 30 MHz.

Available models

Available models
Models
Frequency range
Phase noise
Max. analysis bandwidth
Instrument type

R&S®FSWP8

Order number 1322.8003.09

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Frequency range
1 MHz - 8 GHz  
Phase noise
 < –166 dBc (1 Hz)
(f = 1 GHz, 10 kHz offset)
Max. analysis bandwidth
320 MHz
Instrument type
Phase noise analyzer and VCO tester

R&S®FSWP26

Order number 1322.8003.27

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Frequency range
1 MHz - 26.5 GHz
Phase noise
 < –166 dBc (1 Hz)
(f = 1 GHz, 10 kHz offset)
 
Max. analysis bandwidth
320 MHz
Instrument type
Phase noise analyzer and VCO tester

R&S®FSWP50

Order number 1322.8003.51

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Frequency range
1 MHz - 50 GHz
Phase noise
 < –166 dBc (1 Hz)
(f = 1 GHz, 10 kHz offset)
Max. analysis bandwidth
320 MHz
Instrument type
Phase noise analyzer and VCO tester

Available options

Performance
Product
Description
R&S®FSWP-B4

Order number 1325.3890.02

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Description

High stability OCXO

R&S®FSWP-B8

Order number 1325.5028.26

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Description

Resolution bandwidth > 10 MHz

R&S®FSWP-B8

Order number 1325.5028.02

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Description

Resolution bandwidth > 10 MHz , for R&S®FSWP50

R&S®FSWP-B8E

Order number 1338.7099.02

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Description

Resolution bandwidth, 40 MHz

R&S®FSWP-B13

Order number 1325.4350.02

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Description

Highpass filter for harmonic measurements

R&S®FSWP-B60

Order number 1322.9800.08

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Description

Cross-correlation, 8 GHz

R&S®FSWP-B60

Order number 1322.9800.26

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Description

Cross-correlation, 26.5 GHz

R&S®FSWP-B60

Order number 1322.9800.50

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Description

Cross-correlation, 50 GHz

R&S®FSWP-B61

Order number 1325.3719.08

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Description

Cross-correlation (low phase noise), 8 GHz

R&S®FSWP-B61

Order number 1325.3719.26

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Description

Cross-correlation (low phase noise), 26 GHz

R&S®FSWP-B61

Order number 1325.3719.50

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Description

Cross-correlation (low phase noise), 50 GHz

R&S®FSWP-B64

Order number 1322.9900.27

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Description

Signal source for additive phase noise measurements

Preamplifier
Product
Description
R&S®FSWP-B24

Order number 1325.3725.08

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Description

RF preamplifier, 100 kHz to 8 GHz

R&S®FSWP-B24

Order number 1325.3725.26

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Description

RF preamplifier, 100 kHz to 26.5 GHz

R&S®FSWP-B24

Order number 1325.3725.50

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Description

RF preamplifier, 100 kHz to 50 GHz

Analysis bandwidth
Product
Description
R&S®FSWP-B80

Order number 1325.4338.02

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Description

80 MHz analysis bandwidth

R&S®FSWP-B320

Order number 1338.3235.04

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Description

320 MHz analysis bandwidth

External Mixing
Product
Description
R&S®FSWP-B21

Order number 1325.3848.02

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Description

LO/IF ports for external mixers

Spectrum analysis
Product
Description
R&S®FSWP-B1

Order number 1322.9997.08

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Description

Spectrum analyzer, 10 Hz to 8 GHz

R&S®FSWP-B1

Order number 1322.9997.26

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Description

Spectrum analyzer, 10 Hz to 26.5 GHz

R&S®FSWP-B1

Order number 1322.9997.50

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Description

Spectrum analyzer, 10 Hz to 50 GHz

Extras
Product
Description
R&S®FSWP-B10

Order number 1325.5463.02

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Description

External generator control

R&S®FSWP-B18

Order number 1331.4313.02

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Description

Spare solid state drive (removable hard drive)

General purpose
Product
Description
R&S®FSWP-K7

Order number 1325.4238.02

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Description

Analog modulation analysis for AM/FM/φM

R&S®FSWP-K30

Order number 1325.4244.02

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Description

Noise figure measurements

R&S®FSWP-K50

Order number 1338.3358.02

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Description

Spurious measurements

R&S®FSWP-K70

Order number 1325.4280.02

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Description

Vector signal analysis

R&S®FSWP-K70M

Order number 1350.6860.02

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Description

Multi-modulation analysis

R&S®FSWP-K70 option required

R&S®FSWP-K70P

Order number 1350.6876.02

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Description

BER PRBS measurements

Radar
Product
Description
R&S®FSWP-K4

Order number 1325.5034.02

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Description

Pulsed phase noise measurements

R&S®FSWP-K6

Order number 1325.4221.02

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Description

Pulse measurements

R&S®FSWP-K6P

Order number 1338.3106.02

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Description

Pulse stability measurements

R&S®FSWP-K6S

Order number 1325.5363.02

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Description

Time sidelobe measurements

R&S®FSWP-K60

Order number 1338.4525.02

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Description

Transient measurements

R&S®FSWP-K60C

Order number 1338.4531.02

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Description

Transient chirp measurements

R&S®FSWP-K60H

Order number 1338.4548.02

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Description

Transient hop measurements

R&S®FSWP-K60P

Order number 1353.2420.02

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Description

Transient phase noise measurements

Satellite systems
Product
Description
R&S®FSWP-K19

Order number 1350.5963.02

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Description

Noise power ratio

R&S®FSWP-B1 option required Status:

Instrument security
Product
Description
R&S®FSWP-K33

Order number 1325.5040.02

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Description

Security write protection for solid state drive

PC software
Product
Description

Order number 1345.1011.06

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Description

Software

Brings the experience and power of Rohde & Schwarz signal analysis to PC and cloud

R&S®VSE-K6

Order number 1320.7516.06

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Description

Pulse measurements application

R&S®VSE-K7

Order number 1320.7539.06

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Description

Analog modulation analysis (AM/FM/φM)

Modulation analysis for AM/FM/φM modulated single carriers

R&S®VSE-K60

Order number 1320.7868.06

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Description

Transient measurements

Transient analysis

R&S®VSE-K60C

Order number 1320.7874.06

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Description

Transient chirp measurements

Transient analysis, requires R&S®VSE-K60

R&S®VSE-K60H

Order number 1320.7880.06

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Description

Transient hop measurements

Transient analysis, requires R&S®VSE-K60

R&S®VSE-K70

Order number 1320.7522.06

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Description

Vector signal analysis

R&S®VSE-K91

Order number 1320.7597.06

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Description

IEEE 802.11a/b/g measurements

WLAN signal analysis

R&S®VSE-K91P

Order number 1320.7680.06

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Description

IEEE 802.11p measurements

WLAN signal analysis

R&S®VSE-K91N

Order number 1320.7600.06

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Description

IEEE 802.11n measurements

WLAN signal analysis

R&S®VSE-K91AC

Order number 1320.7616.06

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Description

IEEE 802.11ac measurements

WLAN signal analysis

R&S®VSE-K91AX

Order number 1345.1411.06

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Description

IEEE 802.11ax measurements

WLAN signal analysis

R&S®VSE-K96

Order number 1320.7922.06

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Description

OFDM signal analysis

R&S®VSE-K544

Order number 1309.9580.06

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Description

User-defined Frequency Correction by SnP File

R&S®FSPC

Order number 1310.0002.03

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Description

Licence Dongle

R&S®FSPC-FL

Order number 1310.0002.04

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Description

Floating license dongle

R&S®VSE-SWM

Order number 1320.7622.81

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Description

Software maintenance

Cellular systems
Product
Description
R&S®VSE-K72

Order number 1320.7580.06

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Description

3GPP FDD measurements

WCDMA signal analysis

R&S®VSE-K100

Order number 1320.7545.06

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Description

EUTRA/LTE FDD uplink and downlink measurement application

LTE signal analysis

R&S®VSE-K102

Order number 1320.7551.06

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Description

EUTRA/LTE advanced and MIMO (downlink)

LTE signal analysis

R&S®VSE-K104

Order number 1320.7568.06

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Description

EUTRA/LTE TDD uplink and downlink measurement application

LTE signal analysis

R&S®VSE-K106

Order number 1320.7900.06

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Description

EUTRA/LTE

Narrowband IoT analysis

R&S®VSE-K144

Order number 1309.9574.06

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Description

5G NR uplink and downlink measurement application

R&S®VSE-K175

Order number 1350.7020.06

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Description

O-RAN measurements

External mixers
Product
Description

Order number 1048.0171.02

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Description

Harmonic Mixer 40 GHz to 60 GHz (U band)

Order number 3638.2240.02

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Description

Harmonic Mixer 50 GHz to 75 GHz (wideband signal analysis)

Order number 3638.2270.02

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Description

Harmonic Mixer 60 GHz to 90 GHz (wideband signal analysis)

Order number 3638.2292.02

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Description

Harmonic Mixer 75 GHz to 110 GHz (wideband signal analysis)

Order number 3622.0708.02

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Description

Harmonic Mixer 90 GHz to 140 GHz

Order number 3622.0714.02

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Description

Harmonic Mixer 110 GHz to 170 GHz

Order number 3593.3250.02

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Description

Harmonic Mixer 140 GHz to 220 GHz

Order number 3593.3267.02

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Description

Harmonic Mixer 220 GHz to 325 GHz

Noise sources
Product
Description

Order number 1338.8008.18

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Description

Smart noise source 10 MHz to 18 GHz

Order number 1338.8008.26

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Description

Smart noise source 10 MHz to 26.5 GHz

Order number 1338.8008.40

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Description

Smart noise source 100 MHz to 40 GHz

Order number 1338.8008.55

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Description

Smart noise source 100 MHz to 55 GHz

Order number 1338.8008.67

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Description

Smart noise source 100 MHz to 67 GHz

Order number 1338.8008.90

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Description

Smart noise source 60 GHz to 90 GHz

Order number 1338.8008.11

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Description

Smart noise source 75 GHz to 110 GHz

Related videos

Unrivalled phase noise measurement performance with the R&S®FSWP phase noise analyzer

12-Feb-2019

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This white paper provides a brief technical introduction to phase noise concepts as well as an overview of how phase noise is measured and reported.

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