Vector signal generator options extend frequencies up to 20 GHz

June 09, 2014 // By Graham Prophet
Rohde & Schwarz has introduced two instrumentation options that add frequency coverage up to 20 GHz. The R&S SMW200A signal generator makes it possible to generate two wideband signals with any type of modulation up to 20 GHz using a single device. The SGU100A RF upconverter provides a very compact vector signal generator, also with 20 GHz coverage.

Rohde & Schwarz has expanded the frequency range of its R&S SMW200A high-end vector signal generator to 20 GHz. When generating complex multichannel scenarios, fading and MIMO scenarios can be configured over the entire frequency range. The upgrade to 20 GHz addresses users in the wireless communications and aerospace and defence industries.

The R&S SMW200A is the only instrument on the market to combine a baseband generator, RF generator and fading simulator in a single box. It can be equipped with a second 20 GHz path, making it possible to simultaneously generate up to two wideband microwave signals with any type of modulation. For these types of complex setups, other solutions require at least three devices ‒ and considerably more effort for settings, synchronisation and cabling.

Users in the wireless communications and aerospace/defence (A&D) industries will benefit from the new options. The instrument's capability of combining a 6 GHz and a 20 GHz path in a single box allows users to perform the receiver and performance tests required by many telecommunications standards ‒ no matter whether they need only the wanted signal or, in addition, interferers and perhaps even fading or additive white Gaussian noise (AWGN). The SMW200A accommodates all of these requirements and can generate signals in an application-compliant way. Using informative block diagrams on a touchscreen, users can quickly configure the relevant signal parameters.

The R&S SMW-B120 microwave option up to 20 GHz supports numerous A&D applications in the X and Ku bands. The vector signal generator also delivers phase-coherent signals for testing phased array antennas. If more than two phase-coherent signals are needed, extra R&S SMW200A generators can be added.

Using an integrated test case wizard, users can configure even complex WCDMA or LTE test scenarios with the wanted signal along with an interfering signal and fading or AWGN. The internal baseband generator supports a large signal bandwidth up to 160 MHz. Using external I/Q signals, the signal bandwidth can extend up to 2 GHz. Using the optional fading simulator, MIMO scenarios can be simulated in a reproducible way, making it possible to quickly configure even higher MIMO modes such as 2x2, 4x4 or 8x2.

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