Software Defined Radio, Chapter 2: It Didn't Work

 So now it's 2023 and I haven't revisited the project.  Nothing I did 4 years ago would still apply anyway.


CISC has since done this themselves.  Their SDR is painted gold.  Other than that, it's basically what I set out to do in 2017.  Except it works, presumably, so good on them:

https://www.cisc.at/product/rain-xplorer-spy/


In Sep2023, I am trying again with the Analog Devices ADL5920.  It's a $40 chip with bidirectional RF transmission line built in.  It can separate forward from reverse power and measure both independently.  That means, potentially, you could have a VNA in every RFID reader, telling you how good your antenna setup is and whether your antennas are receiving power from neighbors.


Hopefully it won't be another 4 years before I post again.


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