10 Things to Consider When Buying Open Source RFSOC Algorithm Verification Evaluation Board

I got involved in new project at the WUT.
We will build wideband MIMO SDR. Probably on the new RFSoC that:

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• are pin compatible with ZU25
• offer 8x 10G DACs and 8x 5G ADCs

The BittWare RFX-L card is an L-band digital direct sampling transceiver featuring the third generation AMD Zynq® UltraScale+™ RFSoC. This innovative solution uses the RFSoC’s ADC for L-band direct sampling, displacing legacy down conversion approaches at and below L-Band, and displacing external amplification above L-Band. 

The RFX-L was designed as a standalone card that just happens to be in PCIe form factor. Installing the card in a ruggedized chassis would allow you to mount the RFX-L card near the antenna to transform antenna data into packets. Since the RFX-L gets all of its power via the external power connector and can be communicated with via an on-board RJ45 connector, it does not need a PCIe slot. The RFX-L also works in traditional server PCIe slots.

L-band Direct Sampling

Tapping three decades of experience in designing sensor processing cards, BittWare’s analog front-end features variable gain input down to -64 dBm.  This innovative solution uses the RFSoC’s ADC for L-band direct sampling, displacing legacy down conversion approaches.

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Do More in the Digital Domain

At the center of the RFX-L is the latest generation single-chip RFSoC from AMD, the Zynq ZU43. This device is designed to bring together multi-channel data conversion and processing on a single chip.

BittWare RFX cards ship with an application that converts between analog data and timestamped, VITA-49.2 packets. It works in both ADC and DAC directions. The application also transfers raw data between the RFSoC and the ARM memory or eMMC. The RFSoC’s ARM Processing System runs Linux and acts as a control plane. More specifically, BittWare has integrated card management functions through customized Linux drivers. BittWare has also ported AMD’s RF Tool application, a socket library that configures an RFSoC chip. Above both Linux and RF Tool, BittWare provides its own RFUtils commands and examples. RFUtils can generate synthetic waveforms as well as load and stream waveforms from files. All of this is fully supported by BittWare and we provide source code.

BittWare also supplies an unsupported port of AMD’s RF Analyzer which we use to help characterize our cards.

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