![]() Finally, wide signal bandwidth is an essential requirement for many advanced research applications. Also, in spectrum monitoring systems, the bandwidth of the instrument can dramatically improve the scan rate. In addition, wideband radar systems often require up to 2 GHz of signal bandwidth to accurately capture pulsed signals. Table 2: Evolution of Channel Bandwidth for Wireless Standards Increasing Channel Bandwidthģx Bandwidth for Adjacent Channel Power | 5x Bandwidth for Digital Pre-Distortion With the wide bandwidth of the PXIe-5842, engineers can use a single instrument to generate or analyze multiple 5G NR carriers instead of using multiple instruments. For example, in tests for 5G NR devices, many of the 5G carriers are separated by several hundred megahertz. This wider bandwidth means that engineers can solve more challenging applications. As a result, instrument bandwidth requirements can be up to 2 GHz for 5G NR FR1 (400 MHz signal) and 1.6 GHz for 802.11be (320 MHz signal).įigure 3: DPD Algorithm Using 5X Signal BandwidthĪ significant enhancement of the PXIe-5842 VST is its wider instantaneous bandwidth of 2 GHz. Advanced DPD algorithms often require three to five times the RF signal bandwidth. For example, when testing RF power amplifiers (PAs) under digital predistortion (DPD) conditions, the test equipment itself must extract a PA model, correct for nonlinear behavior, and then generate a corrected waveform. In addition, the bandwidth requirements of the instrument often exceed the bandwidth of the wireless communications channel. These standards will continue to evolve with more channel bandwidth support over the years to come. The 5G NR standard defines a maximum channel bandwidth of 400 MHz in the FR1. The latest 802.11be Wi-Fi standard defines a maximum channel bandwidth of 320 MHz. Wireless standards today like Wi-Fi or 5G NR use significantly wider bandwidth channels to achieve higher peak data rates. Applications include radar target simulation, spectrum monitoring in electronic warfare and satellite communications, or for parametric test of ESAs (Electronically Scanned Arrays) components commonly used in radar and satellite communication systems.įigure 2: Commercial Applications Spanning the RF Spectrum and SATCOM Proliferation Wide Instantaneous Bandwidth The combination of the cutting-edge dual synthesizer (PXIe-5655) with the high-frequency coverage means you can use the PXIe-5842 for various aerospace and defense applications (A/D/G) from the VHF to K bands. ![]() ![]() Applications and standards ranging from WLAN, Ultra-Wideband (UWB), Bluetooth, 5G NR, and radio prototyping can now all be tested with one capable and versatile instrument. The PXIe-5842 is the first VST to offer continuous frequency coverage from 50 MHz to 23 GHz in one instrument. Modular architecture Wide Frequency Range Both instruments use direct conversion from IQ to RF and are optimized for excellent measurement quality. The PXIe-5842 features a high-performance RF signal generator and RF signal analyzer. Example applications include wireless production test, RFIC characterization, channel sounding, radar prototyping, signal intelligence, and software-defined radio. Specificationįigure 1: The PXIe-5842 Third Generation PXI Vector Signal TransceiverĪs a result, VSTs serve a wide range of RF design and test applications and are ideally suited for applications that require an RF stimulus and RF response. It doubles the available instantaneous bandwidth from previous models to 2 GHz and provides overall RF performance improvements on key metrics like error vector magnitude (EVM) and average noise density. The PXIe-5842 VST is the first VST to offer a continuous frequency coverage from 50 MHz all the way up to 23 GHz. A VST combines an RF signal generator, an RF signal analyzer, and a powerful FPGA onto a single PXI module. NI introduced the concept of a Vector Signal Transceiver (VST) in 2012.
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