ke7c2mi

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DIIDevHeads IoT Integration Server

•Created by ke7c2mi on 9/9/2024 in #pcb-and-analog

Designing an SDR with PoE Power Supply: Synchronizing SMPS and Managing Heat and Noise

Thanks for the suggestion! I had a thought to use a module - I originally built some years a similar system where I used a RPI with a PoE board and generally built it from modules. That design uses more power, has way more computer than I need at the SDR.etc and it is quite noisy too which you can see with the SDR - here I am hoping to crunch down to something that can easily be put in an enclosure outside and pole mounted so using modules is less appealing due to the size. I do plan to use a magjack with all the integrated magnetics to save some amount of faf, but at the end of the day I wanted to include a DDR3L chip so the PoE is the least of my problems compared to trying to tame that kthulu beast 🤓 Imagine some aluminum extruded box mounted to a pole, aiming for 50mmx150mm - with an ethernet cable in the bottom and a couple of SMA connectors on top running to antennas

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