2 GHz signal analyser bandwidth is ‘unique’ says Rohde & Schwarz

March 09, 2015 // By Graham Prophet
Developers need large bandwidths to analyse wideband signals like those of the new IEEE 802.11ad WLAN standard, 5G next generation mobile communications signals, and radar chirp signals. The R&S FSW is the first signal and spectrum analyser offering 2 GHz analysis bandwidth.

Analysis bandwidth of the FSW high end signal and spectrum analyser cn now be extended to 2 GHz with the FSW-B2000 hardware option. This test solution enables R&D users to demodulate extremely wideband signals and analyse them in detail. R&S asserts that there is no other instrument on the market that combines such a large analysis bandwidth with a frequency range up to 67 GHz, and it opens up numerous applications. For example, users can measure the EVM values of communications signals or the chirp rate on chirped radar systems.

To analyse a signal with such a large bandwidth, the R&S FSW downconverts it to an intermediate frequency, which is then wideband digitised by an R&S RTO oscilloscope. The R&S FSW equalises this digital signal and adjusts the sampling rate. The entire signal path including the oscilloscope is calibrated. Users control the setup via the analyser, which also displays measurement results. Measurement applications such as vector signal analysis or pulse and transient measurements make it possible to analyse the signal in detail.

The performance features offered by the R&S FSW make the instrument appropriate for developers of devices and components complying with IEEE 802.11ad, the latest WLAN standard, enabling the transmission of high data rates over short distances. IEEE 802.11ad signals have a symbol rate of 1.76 Gsample/sec in single carrier mode and require 2 GHz of analysis bandwidth for demodulation.

The R&S FSW-B2000 option is available for the R&S FSW26 to R&S FSW67 high end signal and spectrum analyzers with frequency ranges up to 26.5 / 43.5 / 50 / 67 GHz.

Rohde & Schwarz; www.rohde-schwarz.com