There needs to be an RF antenna and detector on the PCB that can detect signals from 8GHz to 40GHz. How can I do it?

 

hi Dnx,
Welcome to AAC
Check this link and PDF.

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https://www.google.com/search?q=blu...GAZAGCJIHATGgBwCyBwC4BwA&sclient=gws-wiz-serp

 

There needs to be an RF antenna and detector on the PCB that can detect signals from 8GHz to 40GHz. How can I do it?

Yes, https://ieeexplore.ieee.org/document/10048701
A Multioctave 8 GHz−40 GHz Receiver for Radio Astronomy

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10048701