R&S®FE170ST Frontend


R&S®FE170ST Frontend
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R&S®FE170ST Frontend
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R&S®FE170ST Frontend
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R&S®FE170ST Frontend
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R&S®FE170ST Frontend
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R&S®FE170ST Frontend
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Key facts

  • Fully calibrated solution
  • Ease of operation
  • Fully automated
  • Smart accessories
  • Compact form factor

Frequency extension to D-Band (110 GHz to 170 GHz)

The R&S®FE170ST is ideal for early subterahertz and 6G research. By extending the frequency ranges for the R&S®SMW200A and R&S®SMM100A to the D band (110 GHz to 170 GHz) engineers can access the range they need and develop the next generation of mobile communications. The easy-to-use, fully-calibrated solution is compatible with our signal generator, analyzer and oscilloscope environments. Plug it in and start designing the next generation of mobile communications today.

Features & benefits

Fully calibrated solution

The R&S®FE170ST is designed as an external frontend for the R&S®SMW200A and R&S®SMM100A vector signal generators. Every R&S®FE170ST is fully characterized during production. As soon as the R&S®FE170ST is connected via LAN, the correction data in the frontend automatically transfers to the base unit, ensuring a fully calibrated signal generation solution and reducing the time and equipment needed for setup and calibration while enhancing measurement fidelity.

Ease of operation

The R&S®FE170ST fits seamlessly into the operating concept of the R&S®SMW200A and R&S®SMM100A vector signal generators. As soon as the frontend is connected with a LAN, IF or REF connector, the R&S®SMW200A and R&S®SMM100A are converted into signal generators for D band (110 GHz to 170 GHz) applications. Setting up automated measurements is easy and reliable because multiple instruments do not need to be programmed. 

R&S®FE170ST connection
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R&S®FE170ST connection

The R&S®SMW200A user interface with a connected R&S®FE170ST

Excellent signal performance

Generating wideband-modulated signals with excellent modulation quality is essential when developing next generation mobile communications and automotive radar applications. The R&S®FE170ST has outstanding modulation quality. A  5G NR signal with a channel bandwidth of 2 GHz (960 kHz SCS) and QPSK modulation can be analyzed with an EVM better than -36 dB (at 144 GHz). This excellent modulation quality is maintained over a wide dynamic range. 

EVM values versus RMS output power
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EVM values versus RMS output power

Measured EVM of a 5G NR signal (2 GHz BW, 960 kHz SCS, QPSK) at 148 GHz center frequency. 

Smart accessories

External bandpass filters optimize spur performance and are available as options for the R&S®FE170ST and R&S®FE170SR. The R&S®FE170-Z01, R;&S®FE170-Z02 and R&S®FE170-Z03 waveguide bandpass filters have low insertion loss and an excellent voltage standing wave ratio. Device characteristics are stored on an EPROM. A simple cable connection is used to transfer data to the base instruments and is automatically included in a fully calibrated solution. 

Compact form factor

The compact design allows the R&S®FE170ST to be positioned closely to the device under test. This minimizes the length of additional RF feed lines that can increase losses. Short distance to the DUT reduces the level ripple over frequency and improves signal quality. Versatile mounting points and adjustable feet allow for more flexible positioning of the R&S®FE170SR. Thanks to the R&S®WR6.5 waveguide connector, a DUT or antenna can be directly mounted for OTA measurements.

Available options

External accessories

Order number 1347.9532.02


Bandpass filter

External bandpass filter (110-136 GHz) for the R&S®FE170ST and R&S®FE170SR 


Order number 1347.9549.02


Bandpass filter

External bandpass filter (126-153 GHz) for the R&S®FE170ST and R&S®FE170SR


Order number 1347.9555.02


Bandpass filter

External bandpass filter (143-170 GHz) for the R&S®FE170ST and R&S®FE170SR 


Order number 1347.9655.02


R&S®WR6.5 waveguide-to-waveguide adapter

Waveguide section straight. Length: 400mm


Order number 1348.5330.02


Frontend height adjustment

Height adjustment and mounting kit for external frontends. 
Horizontal or vertical assembly possible.

Related videos

 Sub-Terahertz, Above Expectations

Sub Terahertz, Above Expectations

Sub-THz testing for 6G: R&S®FE170SR and R&S®FE170ST

Sub-THz testing for 6G: R&S®FE170SR and R&S®FE170ST

#ThinkSix with the R&S®FE170ST and R&S®FE170SR

#Think Six - A simple to use setup for investigating signals in the D-Band

A simple to use setup for investigating signals in the D-Band

For early 6G R&D in the 110-170 GHz D-Band, R&S introduces FE170 Frontend.

Generate & analyze 4 GHz RF bandwidth signals in the D-Band

Generate & analyze 4 GHz RF bandwidth signals in the D-Band

For early 6G R&D from 110-170 GHz, extra bandwidth supports higher data rates

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