Have you ever known of an engineering problem for years......and when you hear of a new solution......you think....man I wished I had of thought of that?

https://phys.org/news/2017-03-two-way-radio-chip.html

Another digital solution to an analog problem.

 

It just sounds like a fancy Circulator.

http://www.nature.com/articles/ncomms11217

Old school units have at least 30db of isolation. I wonder what the isolation is with this device.

 

https://phys.org/news/2017-03-two-way-radio-chip.html

I can't see anything electronic related in that picture. Maybe I'm just distracted?