Vector signal generator options extend frequencies up to 20 GHz
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 2×2, 4×4 or 8×2.
next; 20-GHz upconverter…
The R&S SGU100A RF upconverter expands the SGS100A vector signal generator to cover microwave applications. The combination of the two instruments yields the most compact vector signal source available with up to 20 GHz. The SGU100A is available as a pure CW upconverter or as an upconverter for I/Q-modulated signals.
The upconverter from extends the frequency range of the R&S SGS100A vector signal generator from 12.75 GHz to 20 GHz. By combining the two instruments, users can now generate vector signals continuously from 80 MHz to 20 GHz, for example, for use in test systems in the aerospace and defence sector.
Once combined, the R&S SGS100A and R&S SGU100A act as a single unit with one I/Q input and one RF output. This combined unit can also be controlled remotely or manually just like a single instrument. Depending on the configuration, it takes up two height units at ½-19-in. width or one height unit at 19 in. width. The SGS100A and R&S SGU100A together take up considerably less space in the rack than other, comparable microwave vector signal generators, while still offering outstanding performance. For example, the error vector magnitude (EVM) for a 30 Msym/sec QPSK signal is 0.5% at an RF frequency of 14 GHz. Above 12 GHz, the SGS100A with the SGU100A features an I/Q modulation bandwidth of 2 GHz. This provides a solution for wideband applications such as those used in satellite communications or radar tests requiring extremely short pulses.
The SGU100A is available as a pure CW source or as a source for I/Q-modulated signals. When using the CW version, the combination suits multitone applications requiring phase coherence. Users who already have an R&S SGS100A up to 12.75 GHz or another signal generator with a similar frequency range can use the R&S SGU100A to extend their generator’s frequency range up to 20 GHz.
Rohde & Schwarz; www.rohde-schwarz.com/ad/press/smw200a / www.rohde-schwarz.com/ad/press/sgu100a
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