Description

A first in the world of signal and spectrum analyzers
The frequency range between 50 GHz and 70 GHz (including the ISM* band at 60 GHz) is becoming ever more important for commercial applications owing to its large available bandwidths and associated high transmission rates. However, large signal bandwidths are what makes it very difficult or even impossible to carry out ** spectral measurements with external harmonic mixers as is customary above 50 GHz. This includes the tasks of measuring spectrum masks and verifying spurious emission limit compliance.
This is one of the key fields of application of the new Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer. With a continuous frequency range up to 67 GHz (adjustable to 70 GHz), it always delivers conclusive measurement results. When combined with an optional preamplifier up to 67 GHz, its displayed average noise level (DANL) is 60 GHz at only –160 dBm (1 Hz), and it detects even the weakest signals reliably and quickly. The Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer is an ideal noise factor meter for developing 60 GHz band receiver systems.

Like the other Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer models, the Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer has low phase noise; –112 dBc (1 Hz) with 10 kHz offset from carrier and a 60 GHz carrier frequency provide a solid foundation for oscillator development. Equipped with the Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer phase noise measurement option, the analyzer becomes an easy-to-use phase noise tester. This option reliably measures heavily drifting, free-running oscillators up to small carrier offset values – a particularly important feature for microwave oscillator development.

The Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer is the first signal and spectrum analyzer capable of analyzing signals with a bandwidth of up to 500 MHz in the 60 GHz band (Fig. 2). When equipped with the Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer signal analysis option, any of the models in the Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer family can be used to analyze QAM, MSK, PSK, APSK or FSK-modulated single carriers. The user-configurable Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum AnalyzerOFDM analysis software measures OFDM signals.

The new Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer bandwidth option increases the analysis bandwidth of all models in the Rohde & Schwarz FSW67 67 GHz Microwave Signal and Spectrum Analyzer family from 320 MHz to 500 MHz. The option can be integrated into the analyzer to avoid the complicated and cumbersome alignment routines required for combinations with an oscilloscope serving as a digital converter for the wideband IF output of an analyzer. With up to 500 MHz analysis bandwidth, it enables radar system developers to verify shorter pulses and rise times and track greater frequency hop sizes. For amplifier characterization and linearization, it is essential to not only determine the distortion products in the wanted signal but also those in the adjacent channels. Now, for the first time, it is possible to fully measure both adjacent channels and the signal carrier in 160 MHz 802.11ac systems.

Condensed data of the R&S®FSW67
Frequency range (adjustable to 70 GHz) : 2 Hz to 67 GHz, (DC coupling); 10 MHz to 67 GHz (AC coupling)

DANL at 62 GHz
Without preamplifier                                         :  typ. –129 dBm (1 Hz)
With preamplifier                                                : typ. –152 dBm (1 Hz)
DANL with noise cancellation                        : max. 13 dB

Phase noise at 60 GHz
10 kHz offset from carrier                                  : typ. –112 dBc (1 Hz)
Third-order intercept at f > 40 GHz                 : +12 dBm nominal